CN219591426U - Current collector rolling equipment and pole piece production line - Google Patents
Current collector rolling equipment and pole piece production line Download PDFInfo
- Publication number
- CN219591426U CN219591426U CN202320821663.4U CN202320821663U CN219591426U CN 219591426 U CN219591426 U CN 219591426U CN 202320821663 U CN202320821663 U CN 202320821663U CN 219591426 U CN219591426 U CN 219591426U
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- coating
- collector
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- 238000005096 rolling process Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims description 60
- 238000000576 coating method Methods 0.000 claims description 60
- 238000005520 cutting process Methods 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 10
- 239000013543 active substance Substances 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 238000005056 compaction Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 6
- 230000037431 insertion Effects 0.000 abstract description 6
- 238000004146 energy storage Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to the technical field of energy storage device production, and discloses a current collector rolling device and a pole piece production line, wherein the current collector rolling device comprises a first press roller and a second press roller, and the central line of the first press roller is parallel to the central line of the second press roller; the first press roll comprises a first roll press part and a second roll press part connected with the first roll press part, and the diameter of the second roll press part is larger than that of the first roll press part; the second press roller comprises a third roller press part and a fourth roller press part, wherein the third roller press part is used for being matched with the first roller press part to roll the body part of the current collecting belt body, the fourth roller press part is used for being matched with the second roller press part to roll the side edge part of the current collecting belt body, and the diameter of the fourth roller press part is larger than that of the third roller press part. According to the current collector rolling equipment and the pole piece production line, the thickness of the side edge part of the current collector belt body is smaller than that of the body part, so that softer pole lugs can be obtained in subsequent processing, and the probability of reverse insertion of the pole lugs can be reduced.
Description
Technical Field
The utility model relates to the technical field of energy storage device production, in particular to a current collector rolling device and a pole piece production line.
Background
The current collector roll-in equipment includes the first compression roller of central line mutual parallel and second compression roller, and the winding strip forms the current collector of thickness unanimity after the roll-in of first compression roller and second compression roller, and the body portion that is used for coating active coating of current collector is the same with the thickness that is used for the cross cutting to form the side portion of utmost point ear this moment. The thickness of the electrode lug after the die cutting forming of the side edge part is the same as that of the body part, and in the subsequent core combining process, the probability that the electrode lug, particularly the aluminum electrode lug, deviates from a preset position and is reversely inserted into the battery core is higher, so that the production yield of the battery core is not facilitated to be improved.
In view of this, it is desirable to design a current collector rolling device and a pole piece production line, which can be beneficial to reducing the probability of tab reverse insertion.
Disclosure of Invention
The utility model aims to provide a current collector rolling device and a pole piece production line, which can be beneficial to reducing the probability of tab reverse insertion.
To achieve the purpose, the utility model adopts the following technical scheme:
a collector roll apparatus comprising a first press roll and a second press roll, the centerline of the first press roll being parallel to the centerline of the second press roll;
the first press roll comprises a first roll press part and a second roll press part connected with the first roll press part, and the diameter of the second roll press part is larger than that of the first roll press part;
the second press roller comprises a third roller press part and a fourth roller press part, wherein the third roller press part is used for being matched with the first roller press part to roll the body part of the current collecting belt body, the fourth roller press part is used for being matched with the second roller press part to roll the side edge part of the current collecting belt body, and the diameter of the fourth roller press part is larger than that of the third roller press part.
Optionally, when the first press roll and the second press roll the current collecting belt body, a distance from a roll surface of the second roll part close to the fourth roll part to a roll surface of the fourth roll part close to the second roll part is a, and a distance from a roll surface of the first roll part close to the third roll part to a roll surface of the third roll part close to the first roll part is B; wherein B is more than or equal to A.
Optionally, the first press roller and the second press roller roll the current collecting belt body;
the distance from the roll surface of the second roll nip to the roll surface of the fourth roll nip was 6 μm.
Optionally, the device comprises a first rotation driving device for driving the first press roller to rotate along the central line of the first press roller, a second rotation driving device for driving the second press roller to rotate along the central line of the second press roller, and a distance adjusting device for driving the second press roller to be far away from or close to the first press roller.
Optionally, the further the second roll nip is from the first roll nip, the larger the diameter;
the farther the fourth roll nip is from the third roll nip, the larger the diameter.
Optionally, the second roller press is arranged at two opposite ends of the first roller press;
the opposite ends of the third roll pressing part are provided with the fourth roll pressing part.
Optionally, the first press roll is integrally formed; the second press roller is integrally formed.
A pole piece production line comprising a current collector roll apparatus as claimed in any one of the preceding claims.
Optionally, the pole piece production line further comprises a zone coating device, wherein the zone coating device is arranged downstream of the current collector rolling device;
the coating equipment comprises a coating spray head, a coating roller set and a compacting roller set which are sequentially arranged;
the coating roller set comprises a first coating roller and a second coating roller, a roller gap for the rolled current collecting belt body to enter is formed between the first coating roller and the second coating roller, and at least two baffle plates with adjustable intervals for limiting the width of a coating area are arranged between the first coating roller and the second coating roller;
the paint spray heads are used for spraying active substances to the rolled current collecting belt body, and at least one paint spray head is arranged between two adjacent baffle plates; the compaction roller set is used for compacting the active substance sprayed on the rolled current collecting belt body to form an active coating.
Optionally, the pole piece production line further comprises a laser die cutting device for die cutting the current collecting belt body, wherein the laser die cutting device is arranged at the downstream of the partition coating device;
the laser die cutting equipment comprises a plurality of laser die cutting heads.
Compared with the prior art, the utility model has the following beneficial effects:
in the embodiment, the shapes of the first press roller and the second press roller are skillfully set, so that the first press roller and the third press roller are matched to roll the body part of the current collecting belt body, and the second press roller and the fourth press roller are matched to roll the side edge part of the current collecting belt body; the diameter of the second rolling press part is larger than that of the first rolling press part, and the diameter of the third rolling press part is smaller than that of the fourth rolling press part, so that the thickness of the body part obtained by rolling is larger than that of the side edge part; the collector belt body after roll forming comprises a body part and a side edge part connected with the body part, the body part and the collector belt body can be connected with the collector belt body to form a lug forming part, the root thickness of the lug forming part is larger, one end far away from the body part is used for connecting an adapter plate or a pole post, the lug forming part is used for cutting and forming the obtained lug, the root thickness of the lug is larger, the supporting effect is better, the probability of reverse insertion of the lug can be effectively reduced, and accordingly the production yield of the battery cell is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are therefore not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, which would otherwise be used by those skilled in the art, would not have the essential significance of the present disclosure, would still fall within the scope of the present disclosure without affecting the efficacy or achievement of the present disclosure.
Fig. 1 is a schematic diagram of a connection structure of a current collector rolling device according to an embodiment of the present utility model;
FIG. 2 is a schematic view illustrating the installation of a first press roller and a second press roller according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of a partial installation structure of a partition coating apparatus according to an embodiment of the present utility model.
Illustration of: 1. a first press roller; 11. a first roller press section; 12. a second roll nip; 2. a second press roller; 21. a third roll nip; 22. a fourth roll pressing section; 3. a first rotation driving device; 4. a second rotation driving device; 5. a distance adjusting device; 61. a feed roller; 62. a paint transfer roller; 63. a coating roller; 64. coating a press roller; 65. and a striker plate.
Detailed Description
In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions in the embodiments of the present utility model are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
Example 1
The embodiment of the utility model provides a current collector rolling device which can be beneficial to reducing the probability of tab reverse insertion.
Referring to fig. 1, the collector roll apparatus includes a first roll 1 and a second roll 2, a center line of the first roll 1 being parallel to a center line of the second roll 2.
Wherein the first press roll 1 comprises a first roll nip 11 and a second roll nip 12 connecting the first roll nip 11, the diameter of the second roll nip 12 being larger than the diameter of the first roll nip 11; the second press roll 2 includes a third roll nip 21 for mating the first roll nip 11 to roll the body portion of the current collector belt body and a fourth roll nip 22 for mating the second roll nip 12 to roll the side portion of the current collector belt body, the fourth roll nip 22 having a diameter larger than that of the third roll nip 21.
In this embodiment, as shown in fig. 1, the shapes of the first press roller 1 and the second press roller 2 are skillfully set, so that the first press roller 11 is matched with the third press roller 21 to roll the strip material to form the body part of the required current collecting strip body, and the second press roller 12 is matched with the fourth press roller 22 to roll the side edge part of the current collecting strip body. The final production and forming of the current collector comprise a main body part and a tab forming part, wherein the tab forming part is formed by the side edge part and the part of the main body part connected with the side edge part, and the main body part is formed by the rest part of the main body part; the roll-in intervals of the tab forming portion and the body portion are divided by the broken lines in fig. 1, that is, the region between the two broken lines is the region where the body portion is rolled. Therefore, the thickness of the lug forming part obtained by rolling is larger than that of one end far away from the main body part, and the part of the lug, which is close to one end of the main body part, forms an effective support for the lug, so that the lug is prevented from being excessively soft and the reverse insertion condition is avoided, and the production yield of the battery cell is improved.
Alternatively, as shown in fig. 2, the diameter is larger as the second roll nip 12 is farther from the first roll nip 11; the farther the fourth roll nip 22 is from the third roll nip 21, the larger the diameter is. At this time, the rolled side edge part has a certain taper, the side edge part forms a tab forming part of the current collector, and the body part forms a main body part of the current collector. At the moment, the root part of the tab forming part close to the main body part is higher in strength, the supporting and shaping effect of the tab forming part is better, and the tab after forming can be effectively prevented from being reversely inserted; in addition, the root strength of the lug forming part close to the main body part is higher, and the lug forming part can be effectively prevented from being broken. Preferably, the roll surface transition between the first roll nip 11 and the second roll nip 12 is rounded. It should also be noted that the area between the two broken lines in fig. 2 is the area of the rolled body portion. More preferably, the second roll nip 12 has a roll surface curve of an arc curve in a cross section passing through the center line thereof.
Alternatively, when the first press roller 1 and the second press roller 2 roll the collector belt body, the distance from the roll surface of the second roll nip 12 to the roll surface of the fourth roll nip 22 is a, and the distance from the roll surface of the first roll nip 11 to the roll surface of the third roll nip 21 is B; wherein B is more than or equal to 2A. For example, when the rolled aluminum foil strip coil is used as a current collecting strip body, the thickness of the body part of the current collecting strip body is larger, one side edge of the current collecting strip body is used as a side edge part, the thickness of the side edge part can be half of or even less than that of the body part, the side edge part forms a part of the tab forming part, and the part of the body part of the current collecting strip body, which is connected with the side edge part, forms another part of the tab forming part, so that the overall structural strength of the tab forming part is higher, the supporting and shaping effect of the tab obtained by subsequent cutting is better, and the tab is not easy to be reversely inserted.
In a specific embodiment, the first press roller 1 and the second press roller 2 roll the collector belt body; the distance from the roll surface of the second roll nip 12 to the roll surface of the fourth roll nip 22 was 6 μm. The thickness of the body portion may be set to 13 μm or more at this time. In addition, aluminum foil is rolled to form a positive current collector, and copper foil is rolled to form a negative current collector. In this embodiment, through optimizing the structures of first compression roller 1 and second compression roller 2, carry out reasonable calendering to the aluminium foil strip, can make aluminium foil calendering the thickness of the limit portion of the anodal current collector that forms thinner, this is not only favorable to subsequent cross cutting, also is favorable to making the anodal utmost point ear be difficult for walking the off-set in the follow-up core process to insert in the electric core.
Optionally, the collector rolling device comprises a first rotation driving device 3 for driving the first press roller 1 to rotate along the central line of the collector rolling device, a second rotation driving device 4 for driving the second press roller 2 to rotate along the central line of the collector rolling device, and a distance adjusting device 5 for driving the second press roller 2 to be far away from or close to the first press roller 1.
Specifically, the first rotation driving device 3 is used for driving the first press roller 1 to rotate, and the second rotation driving device 4 is used for driving the second press roller 2 to rotate; the first rotation driving device 3 may include a first motor and a first universal joint coupling, opposite ends of which are respectively connected to the rotation shaft of the first motor and the end portion of the first pressing roller 1. The second rotation driving device 4 may include a second motor and a second universal joint coupling, and opposite ends of the second universal joint coupling are respectively connected to the rotation shaft of the second motor and the end portion of the second pressing roller 2. In addition, the distance between the first compression roller 1 and the second compression roller 2 is adjusted through the distance adjusting device 5 so as to calender the current collecting belt bodies with different thicknesses.
Alternatively, the first roller press 11 is provided with a second roller press 12 at opposite ends thereof; the third roll nip 21 is provided with a fourth roll nip 22 at opposite ends. At this time, the rolled current collecting belt body has a thick middle and thinner side edges.
Alternatively, the first press roller 1 is integrally formed, and the second press roller 2 is integrally formed, so as to improve the strength of the first press roller 1 and the second press roller 2.
Example two
The embodiment discloses a pole piece production line, which comprises the current collector rolling equipment in the embodiment I.
Optionally, the pole piece production line further comprises a zone coating device, wherein the zone coating device is arranged at the downstream of the current collector rolling device; the current collector rolling equipment rolls to obtain a current collector belt body, and then the current collector belt body is sent to the partition coating equipment for coating active substances after being collected by the winding machine.
As shown in fig. 3, the coating apparatus includes a coating shower 61, a coating roller group 62, and a compacting roller group 63, which are sequentially arranged; the coating roller set 62 comprises a first coating roller 621 and a second coating roller 622, a roller gap for the rolled current collecting belt body to enter is arranged between the first coating roller 621 and the second coating roller 622, and at least two baffle plates 64 with adjustable spacing for limiting the width of a coating area are arranged between the first coating roller 621 and the second coating roller 622; the paint spray heads 61 are used for spraying active substances to the rolled current collecting belt body, and at least one paint spray head 61 is arranged between two adjacent baffle plates 64; the compaction roller set 63 is used to compact the active material sprayed on the rolled current collecting tape to form an active coating. The coating spray head 61 sprays active substances onto the rolled current collecting belt body, then the rolled current collecting belt body enters the coating roller set 62 for first rolling forming, after the coating roller set 62 rolls, the current collecting belt body is continuously conveyed to the compacting roller set 63 forwards, and the compacting roller set 63 compacts the active substances on the current collecting belt body, so that a required active coating is formed on the current collecting belt body.
It should be noted that a drying device may be further disposed between the coating roller set 62 and the compacting roller set 63. In addition, the thickness of the coating can also be controlled by adjusting the rotational speeds of the first coating roller 621 and the second coating roller 622.
It should be noted that the active material is only coated on the body portion of the current collecting belt body, and the area of the adjacent side edge portion of the body portion is not coated with the active material, and the width of the area of the adjacent side edge portion of the body portion is not more than 1mm. The width here refers to the width perpendicular to the direction of extension of the current collecting belt and parallel to the belt surface of the current collecting belt.
Optionally, the pole piece production line further comprises a laser die cutting device for die cutting the pole piece, wherein the laser die cutting device is arranged at the downstream of the zone coating device; the laser die cutting device comprises a plurality of laser die cutting heads. It should be noted that after the partition coating is completed, steps such as drying, winding and the like are also required to be executed, and then the product is transferred into a laser die cutting device for die cutting. In this embodiment, the die-cut position is set in the area of the adjacent side edge of the body, so that the tab obtained by die-cutting can be well supported, and the tab is prevented from collapsing, being inserted upside down or being broken.
It is also to supplement that, after the pole piece that the laser cross cutting is good goes through processes such as coiling, hot pressing, ultrasonic welder, etc., then close the core with the book, because the thickness of utmost point ear department is thinner, the hardness of utmost point ear can reduce, consequently in the core process is closed to the book core, the trend of utmost point ear is unanimous, can not insert to the pole piece inside, obviously reduced the probability that the utmost point ear was inserted backward, effectively avoided positive and negative pole contact to lead to defects such as short circuit, self-discharge failure, promoted the production yield of electric core.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A collector roll-in apparatus, characterized by comprising a first press roll (1) and a second press roll (2), the centre line of the first press roll (1) being parallel to the centre line of the second press roll (2);
the first press roll (1) comprises a first roll press part (11) and a second roll press part (12) connected with the first roll press part (11), and the diameter of the second roll press part (12) is larger than that of the first roll press part (11);
the second press roll (2) comprises a third roll press (21) for cooperating with the first roll press (11) to roll the body part of the current collecting belt body and a fourth roll press (22) for cooperating with the second roll press (12) to roll the side part of the current collecting belt body, the diameter of the fourth roll press (22) is larger than the diameter of the third roll press (21).
2. The collector roll-in apparatus according to claim 1, wherein when the first press roll (1) and the second press roll (2) roll-in the collector belt, a distance from a roll surface of the second roll press (12) near the fourth roll press (22) to a roll surface of the fourth roll press (22) near the second roll press (12) is a, and a distance from a roll surface of the first roll press (11) near the third roll press (21) to a roll surface of the third roll press (21) near the first roll press (11) is B;
wherein B is more than or equal to 2A.
3. The collector roll arrangement according to claim 2, characterized in that the first press roll (1) and the second press roll (2) roll the collector belt;
the distance from the roll surface of the second roll nip (12) to the roll surface of the fourth roll nip (22) was 6 μm.
4. The collector roll apparatus according to claim 1, comprising a first rotation driving device (3) for driving the first press roll (1) to rotate along its center line, a second rotation driving device (4) for driving the second press roll (2) to rotate along its center line, and a distance adjusting device (5) for driving the second press roll (2) away from or close to the first press roll (1).
5. The collector roll apparatus according to claim 1, characterized in that the further the second roll nip (12) is from the first roll nip (11), the larger the diameter is;
the farther the fourth roll nip (22) is from the third roll nip (21), the larger the diameter is.
6. The current collector rolling apparatus according to claim 1, wherein the second roll nip (12) is provided at both opposite ends of the first roll nip (11);
the fourth roll pressing parts (22) are arranged at two opposite ends of the third roll pressing part (21).
7. The collector roll arrangement according to claim 1, characterized in that the first press roll (1) is integrally formed; the second press roller (2) is integrally formed.
8. A pole piece production line comprising a current collector roll apparatus as claimed in any one of claims 1 to 7.
9. The pole piece production line of claim 8, further comprising a coating apparatus disposed downstream of the current collector roll apparatus;
the coating equipment comprises a coating spray head (61), a coating roller set (62) and a compacting roller set (63) which are sequentially arranged;
the coating roller set (62) comprises a first coating roller (621) and a second coating roller (622), a roller gap for allowing a rolled current collecting belt body to enter is formed between the first coating roller (621) and the second coating roller (622), and at least two baffle plates (64) with adjustable intervals for limiting the width of a coating area are arranged between the first coating roller (621) and the second coating roller (622);
the paint spray heads (61) are used for spraying active substances to the rolled current collecting belt bodies, and at least one paint spray head (61) is arranged between two adjacent baffle plates (64); the compaction roller set (63) is used for compacting the active substance sprayed on the rolled current collecting belt body to form an active coating.
10. The pole piece production line of claim 9, further comprising a laser die cutting apparatus for die cutting the current collector belt, the laser die cutting apparatus disposed downstream of the coating apparatus;
the laser die cutting equipment comprises a plurality of laser die cutting heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320821663.4U CN219591426U (en) | 2023-04-13 | 2023-04-13 | Current collector rolling equipment and pole piece production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320821663.4U CN219591426U (en) | 2023-04-13 | 2023-04-13 | Current collector rolling equipment and pole piece production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219591426U true CN219591426U (en) | 2023-08-25 |
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ID=87691183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320821663.4U Active CN219591426U (en) | 2023-04-13 | 2023-04-13 | Current collector rolling equipment and pole piece production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219591426U (en) |
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2023
- 2023-04-13 CN CN202320821663.4U patent/CN219591426U/en active Active
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