CN220942767U - Pole piece tab stretching device - Google Patents
Pole piece tab stretching device Download PDFInfo
- Publication number
- CN220942767U CN220942767U CN202323011126.2U CN202323011126U CN220942767U CN 220942767 U CN220942767 U CN 220942767U CN 202323011126 U CN202323011126 U CN 202323011126U CN 220942767 U CN220942767 U CN 220942767U
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- China
- Prior art keywords
- pole piece
- stretching
- semicircular
- tab
- stretching device
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- 239000011248 coating agent Substances 0.000 claims abstract description 37
- 238000000576 coating method Methods 0.000 claims abstract description 37
- 238000007747 plating Methods 0.000 claims abstract description 14
- 239000004809 Teflon Substances 0.000 claims description 12
- 229920006362 Teflon® Polymers 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 10
- 238000005096 rolling process Methods 0.000 abstract description 10
- 238000005336 cracking Methods 0.000 abstract description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 18
- 206010040954 Skin wrinkling Diseases 0.000 description 9
- 239000011888 foil Substances 0.000 description 6
- 230000037303 wrinkles Effects 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 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
- 239000011425 bamboo Substances 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to the technical field of manufacturing of pole pieces of lithium ion batteries and discloses a pole piece lug stretching device which comprises two sleeves and fixing pieces, wherein the two sleeves are respectively sleeved at two ends of a roller body, the distance between the two sleeves is matched with the width of a coating area, a plating layer is arranged on the periphery of the sleeve, the pole lug areas at two sides of the coating area are respectively positioned on the plating layers of the two sleeves, and the fixing pieces are arranged on the sleeves and are configured to fix the sleeves on the roller body. The pole piece tab stretching device is attached to the coating through the tab area of the pole piece, tension between the roller body of the compression roller and the tension roller is used for stretching, so that the length of the tab area is prolonged, the tab area can be kept stretching and stretching in advance in the pole piece rolling process through the sleeve arrangement, the consistency of the stretching of the coating area and the tab area is guaranteed in the rolling coating area, and the risk of fold edge cracking and strip breakage of the tab area is reduced.
Description
Technical Field
The utility model relates to the technical field of manufacturing of pole pieces of lithium ion batteries, in particular to a pole piece lug stretching device.
Background
The pole piece preparation process of the lithium ion battery generally comprises the working procedures of pulping, film coating, drying, rolling, slitting and the like, wherein the pole piece rolling is one of the indispensable working procedures, and the rolling can improve the compactness of pole piece active materials and improve the energy density of an electric core. When rolling, the coating area is rolled and stretched, and the empty foil area is thinner than the coating area and is not rolled and stretched, so that the stretching of the coating area and the empty foil area is inconsistent, and the empty foil area is easy to generate wrinkles, uneven surfaces of pole pieces, wavy edges, broken belts and the like.
The existing pole piece and pole lug stretching device is inconvenient to operate when the teflon adhesive tape is attached, part of the pole piece and pole lug stretching device is too hard in stretching hardness, and the problems of pole lug pulling damage, pole lug wrinkling, broken tape and the like exist. Therefore, a new tab stretching device for pole piece needs to be designed to improve the above-mentioned problems.
Disclosure of utility model
The utility model aims to provide a pole piece lug stretching device which is used for guaranteeing synchronous extension of a coating area and a lug area and reducing risks of wrinkling, edge cracking and belt breakage of the lug area.
To achieve the purpose, the utility model adopts the following technical scheme:
Pole piece tab stretching device, it sets up on the roll body of tension roller, includes:
The two sleeves are respectively sleeved at two ends of the roller body, the distance between the two sleeves is matched with the width of a coating area, a plating layer is arranged on the periphery of the sleeve, and lug areas on two sides of the coating area are respectively positioned on the plating layers of the two sleeves; and
The fixing piece is arranged on the sleeve and is configured to fix the sleeve on the roller body.
As a preferable scheme of the pole piece tab stretching device, the sleeve comprises:
The stretching cylinder is semicircular and is provided with two stretching cylinders, the stretching cylinders are coated on the periphery of the roller body, and the end faces of the two stretching cylinders are mutually attached.
As a preferable scheme of the pole piece tab stretching device, the stretching cylinder comprises:
A semicircular inner ring; and
The outer semicircle ring, one side of outer semicircle ring sets up on the side of inner semicircle ring, outer semicircle ring is close to the tip setting of roll body, the cladding material set up in on the week side of inner semicircle ring.
As a preferable scheme of the pole piece lug stretching device, the inner diameter of the semicircular inner ring is the same as the inner diameter of the semicircular outer ring, the outer diameter of the semicircular outer ring is larger than that of the semicircular inner ring, and a step surface is formed at the joint of the semicircular inner ring and the semicircular outer ring.
As a preferable scheme of the pole piece lug stretching device, the width of the semicircular inner ring is larger than or equal to the width of the lug area.
As a preferable scheme of the pole piece lug stretching device, the semicircular inner ring and the semicircular outer ring are integrally formed.
As a preferred scheme of pole piece tab stretching device, two stretching cylinders are mutually attached all corresponding on the terminal surface of semicircle outer lane set up the screw hole, the mounting includes:
The locking screw is in threaded connection with the screw holes of the two semicircular outer rings.
As a preferable scheme of the pole piece lug stretching device, a counter bore communicated with the screw hole is formed in the peripheral side of the semicircular outer ring, and the head of the locking screw is arranged in the counter bore.
As a preferable scheme of the pole piece tab stretching device, the fixing piece comprises:
And the anchor ear is arranged on the circumferential sides of the two semicircular outer rings of the stretching cylinder.
As a preferable scheme of the pole piece lug stretching device, the plating layer is a teflon layer.
The utility model has the beneficial effects that:
According to the pole piece lug stretching device provided by the utility model, the two sleeves are sleeved on the two ends of the roller body, the fixing piece is used for fixing the sleeves and the roller body, the distance between the two sleeves is adjusted through the width of the coating area of the pole piece, and the two lug areas on the two sides of the coating area are respectively positioned on the coating layers of the sleeves. The tab area of the pole piece is attached to the coating, tension between the roller body of the compression roller and the tension roller is used for stretching, so that the length of the tab area is prolonged, the tab area can be kept stretched and extended in advance in the pole piece rolling process through the sleeve arrangement, and the consistency of extension of the coating area and the tab area is guaranteed in the rolling coating area, so that the risk of fold edge cracking and strip breakage of the tab area is reduced.
Drawings
FIG. 1 is a schematic structural view of a pole piece and tab stretching device mounted on a roller body according to an embodiment of the present utility model;
FIG. 2 is a schematic structural view of a pole piece lug stretching device and a pole piece mounted on a roller body according to an embodiment of the utility model;
FIG. 3 is a cross-sectional view of a device for stretching pole piece lugs mounted on a roller body according to an embodiment of the utility model;
Fig. 4 is a partial enlarged view at a in fig. 3.
In the figure:
100. A roller body; 200. a coating region; 201. a tab region;
1. a stretching cylinder; 11. a semicircular inner ring; 12. a semicircular outer ring; 13. a step surface;
2. Locking a screw; 21. screw holes;
3. And a teflon layer.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus 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 utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The existing pole piece and pole lug stretching device is inconvenient to operate when the teflon adhesive tape is attached, part of the pole piece and pole lug stretching device is too hard in stretching hardness, and the problems of pole lug pulling damage, pole lug wrinkling, broken tape and the like exist.
In order to solve the above-mentioned problems, referring to fig. 1 to 4, this embodiment provides a pole piece tab stretching device, which is disposed on a roller body 100 of a tension roller, and includes a sleeve and a fixing member, wherein the sleeve is disposed in two, the two sleeves are respectively sleeved at two ends of the roller body 100, and a distance between the two sleeves is matched with a width of a coating area 200, a plating layer is disposed on a circumferential side of the sleeve, tab areas 201 at two sides of the coating area 200 are respectively disposed on the plating layers of the two sleeves, and the fixing member is disposed on the sleeve and is used for fixing the sleeve on the roller body 100. The two sleeves are sleeved on the two ends of the roller body 100, the fixing of the sleeves and the roller body 100 is realized by using the fixing piece, the distance between the two sleeves is adjusted by the width of the coating area 200 of the pole piece, and the two lug areas 201 on the two sides of the coating area 200 are respectively positioned on the plating layers of the sleeves.
It can be understood that, as shown in fig. 2, the tab area 201 of the pole piece is attached to the plating layer, and is stretched by the tension between the compression roller and the roller body 100 of the tension roller, so as to prolong the length of the tab area 201, and by setting the sleeve, the tab area 201 can be kept stretched and stretched in advance in the pole piece rolling process, and then the consistency of the extension of the coating area 200 and the tab area 201 is ensured when the coating area 200 is rolled, so that the risk of wrinkling, edge cracking and belt breakage of the tab area 201 is reduced.
In this embodiment, the sleeve includes two stretching drums 1, the stretching drums 1 are semicircular and two stretching drums 1 are disposed on the circumference of the roller body 100, and the end surfaces of the two stretching drums 1 are attached to each other to form an annular coating. Through setting up the sleeve into the structure of two semicircular tensile section of thick bamboo 1, can be after wearing and tearing appear, convenient realization dismantles the change, has reduced cost of maintenance.
And, the interval between two adjacent sleeves can also be adjusted through the mounted position of tensile section of thick bamboo 1 to adapt to the extension of different width tab areas 201, the commonality is good.
Further, as shown in fig. 2 and 3, the drawing cylinder 1 includes a semicircular inner ring 11 and a semicircular outer ring 12, one side of the semicircular outer ring 12 is provided on the side surface of the semicircular inner ring 11, the semicircular outer ring 12 is provided near the end of the roller body 100, and the plating layer is provided on the circumferential side of the semicircular inner ring 11. The plating layer in this embodiment is preferably a teflon layer 3, and the width of the teflon layer 3 is 30mm, and in other embodiments may be 40mm, 50mm, 60mm, etc., and specific numerical values may be set according to the width of the semicircular inner ring 11. The flexibility can be increased by arranging the teflon layer 3, and the risk of pulling the aluminum foil and the copper foil tab in the rolling stretching process is reduced.
The diameter of the semicircular inner ring 11 is larger than that of the roller body 100, and the tab area 201 is located on the semicircular inner ring 11 and can stretch and extend the tab area 201 in advance relative to the coating area 200, so that the thickness difference between the coating area 200 and the tab area 201 is compensated, the extending effect is ensured, and the overall quality of the pole piece is improved.
The inner diameter of the inner half ring 11 is the same as the inner diameter of the outer half ring 12, the outer diameter of the outer half ring 12 is larger than the outer diameter of the inner half ring 11, and a step surface 13 is formed at the junction of the inner half ring 11 and the outer half ring 12. The position of semicircle outer lane 12 is used for installing the mounting to the formation of step face 13 makes the whole of tensile section of thick bamboo 1 be "T" setting, has certain rectifying adjustment function to the transmission of pole piece, and the limit face can not be exceeded to the side of the utmost point ear district 201 of pole piece, so that the route of marcing of avoiding the pole piece appears squinting, and transmission stability is better.
Further, the width of the semicircular inner ring 11 is greater than or equal to the width of the tab area 201, so as to ensure that the tab area 201 can be entirely covered on the semicircular inner ring 11. The semicircular inner ring 11 and the semicircular outer ring 12 are integrally formed, and the semicircular inner ring 11 and the semicircular outer ring 12 are made of steel materials, so that the wear resistance and the integrity are better.
In this embodiment, as shown in fig. 3 and 4, screw holes 21 are correspondingly formed on the end surfaces of the semicircular outer rings 12 where the two stretching drums 1 are attached to each other, and the fixing member includes a locking screw 2, where the locking screw 2 is screwed into the screw holes 21 of the two semicircular outer rings 12. Each semicircular outer ring 12 is provided with two screw holes 21, the end faces of the two stretching drums 1 are abutted against each other on the circumferential side of the roller body 100, the screw holes 21 of the two semicircular inner rings 11 are kept aligned, and the locking screws 2 are correspondingly screwed into the screw holes 21, so that the stretching drums 1 are installed, and the roller is simple in structure and convenient to install and detach.
In order to reduce the influence of the installation of the locking screw 2 on the stretching cylinder 1, a counter bore communicated with the screw hole 21 is formed in the peripheral side of the semicircular outer ring 12, and the head of the locking screw 2 is arranged in the counter bore.
In other embodiments, the fixing member includes a hoop (not shown in the drawings) provided on the circumferential sides of the two semicircular outer rings 12 of the stretching cylinder 1.
In order to reduce the influence of the installation of the anchor ear on the stretching cylinder 1, a circle of annular groove is formed in the periphery side of the semicircular outer ring 12, and the anchor ear is embedded in the annular groove.
Illustratively, in one embodiment, when the aluminum foil pole piece is stretched, the pole piece coating width is 540mm, the pole piece thickness is 185 μm, and the width of the tab is 15mm. The thickness of the semicircular inner ring 11 is 300 mu m, the thickness of the teflon layer 3 is 80 mu m, the thickness of the rolled pole piece is 145 mu m, the 1000mm coating area 200 is prolonged by 4.0mm, the lug area 201 is prolonged by 4.0mm synchronously, and the lug area 201 is flat and has no wrinkles.
In another embodiment, when the aluminum foil pole piece is stretched, the pole piece coating width is 624mm, the pole piece thickness is 202 μm, and the tab width is 15mm. The thickness of the semicircular inner ring 11 is 400 mu m, the thickness of the teflon layer 3 is 100 mu m, the thickness of the rolled pole piece is 138 mu m, the 1000mm coating area 200 is prolonged by 5.5mm, the lug area 201 is prolonged by 5.5mm synchronously, and the lug area 201 is flat and has no wrinkles.
In another embodiment, when the copper foil pole piece is stretched, the pole piece coating width is 547mm, the pole piece thickness is 156 μm, and the tab width is 14.5mm. The thickness of the semicircular inner ring 11 is 300 mu m, the thickness of the teflon layer 3 is 50 mu m, the thickness of the rolled pole piece is 93 mu m, the 1000mm coating area 200 is prolonged by 3.5mm, the lug area 201 is prolonged by 3.5mm synchronously, and the lug area 201 is flat and has no wrinkles.
In another embodiment, when the copper foil pole piece is stretched, the pole piece coating width is 631mm, the pole piece thickness is 168 μm, and the tab width is 14.5mm. The thickness of the semicircular inner ring 11 is 350 mu m, the thickness of the teflon layer 3 is 80 mu m, the thickness of the rolled pole piece is 97 mu m, the 1000mm coating area 200 is prolonged by 4.0mm, the lug area 201 is prolonged by 4.0mm synchronously, and the lug area 201 is flat and has no wrinkles.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. Pole piece tab stretching device, it sets up on the roll body (100) of tension roller, its characterized in that includes:
the two sleeves are respectively sleeved at two ends of the roller body (100), the distance between the two sleeves is matched with the width of the coating area (200), the circumference of each sleeve is provided with a plating layer, and lug areas (201) at two sides of the coating area (200) are respectively positioned on the plating layers of the two sleeves; and
And the fixing piece is arranged on the sleeve and is configured to fix the sleeve on the roller body (100).
2. The pole piece tab stretching device of claim 1, wherein the sleeve comprises:
The stretching cylinder (1), stretching cylinder (1) is semi-circular and is provided with two, stretching cylinder (1) cladding in the week side of roll body (100) to two the terminal surface of stretching cylinder (1) laminating each other.
3. Pole piece tab stretching apparatus according to claim 2, wherein the stretching cylinder (1) comprises:
a semicircular inner ring (11); and
The roller comprises a semicircular outer ring (12), wherein one side of the semicircular outer ring (12) is arranged on the side face of the semicircular inner ring (11), the semicircular outer ring (12) is arranged close to the end portion of the roller body (100), and the plating layer is arranged on the circumferential side of the semicircular inner ring (11).
4. A pole piece tab stretching device according to claim 3, wherein the inner diameter of the semicircular inner ring (11) is the same as the inner diameter of the semicircular outer ring (12), the outer diameter of the semicircular outer ring (12) is larger than the outer diameter of the semicircular inner ring (11), and a step surface (13) is formed at the joint of the semicircular inner ring (11) and the semicircular outer ring (12).
5. A pole piece tab stretching device according to claim 3, wherein the width of the semi-circular inner ring (11) is larger than or equal to the width of the tab area (201).
6. A pole piece tab stretching device according to claim 3, wherein the semi-circular inner ring (11) and the semi-circular outer ring (12) are integrally formed.
7. A pole piece tab stretching device according to claim 3, wherein screw holes (21) are correspondingly formed on the end surfaces of the semicircular outer ring (12) where the two stretching drums (1) are attached to each other, and the fixing member comprises:
The locking screws (2) are in threaded connection with the screw holes (21) of the two semicircular outer rings (12).
8. The pole piece lug stretching device according to claim 7, wherein a counter bore communicated with the screw hole (21) is formed in the circumferential side of the semicircular outer ring (12), and the head of the locking screw (2) is arranged in the counter bore.
9. A pole piece tab stretching device as claimed in claim 3, wherein the fixing member comprises:
And the anchor ear is arranged on the peripheral sides of the two semicircular outer rings (12) of the stretching cylinder (1).
10. The pole piece tab stretching device according to any one of claims 1-9, wherein the coating is a teflon layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323011126.2U CN220942767U (en) | 2023-11-08 | 2023-11-08 | Pole piece tab stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323011126.2U CN220942767U (en) | 2023-11-08 | 2023-11-08 | Pole piece tab stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220942767U true CN220942767U (en) | 2024-05-14 |
Family
ID=90979879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323011126.2U Active CN220942767U (en) | 2023-11-08 | 2023-11-08 | Pole piece tab stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220942767U (en) |
-
2023
- 2023-11-08 CN CN202323011126.2U patent/CN220942767U/en active Active
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