CN218351504U - Utmost point ear indentation device - Google Patents
Utmost point ear indentation device Download PDFInfo
- Publication number
- CN218351504U CN218351504U CN202222605842.2U CN202222605842U CN218351504U CN 218351504 U CN218351504 U CN 218351504U CN 202222605842 U CN202222605842 U CN 202222605842U CN 218351504 U CN218351504 U CN 218351504U
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- Prior art keywords
- forming roller
- roller
- forming
- pole piece
- matching
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- 238000007373 indentation Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 238000005096 rolling process Methods 0.000 claims abstract description 42
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000013072 incoming material Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006255 coating slurry Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
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- Metal Rolling (AREA)
Abstract
The utility model provides a pole ear indentation device, which comprises a support and a rolling mechanism arranged on the support; the rolling mechanism comprises a first forming roller, a second forming roller and matching rollers, the second forming roller is positioned at the downstream of the first forming roller along the feeding direction of the pole piece, and the matching rollers are respectively arranged opposite to the first forming roller and the second forming roller one to one; the first forming roller and the second forming roller are provided with convex edges, and a plurality of convex edges are arranged at intervals to be paved on the roller surface of the first forming roller or the second forming roller; the first forming roller and the second forming roller are matched with the matching roller to clamp and roll the supplied materials of the pole pieces to form reticular reinforcing ribs protruding towards the same side of the supplied materials of the pole pieces; the arrangement of the structure ensures that the lines rolled out on the pole piece by the indentation device are of a net structure, the enhancement effect on the pole lug is better, and the problem that the indentations are offset mutually due to bidirectional rolling can be avoided.
Description
Technical Field
The utility model relates to a battery pole piece processing technology field especially relates to a utmost point ear indentation device.
Background
In the lithium battery, a roll core is an important component participating in electrochemical reaction and is made by winding a pole piece and a diaphragm, wherein the pole piece is made by coating slurry on a copper foil or an aluminum foil, the slurry is coated in the middle of the foil, two side edges are left white, a tab needs to be die-cut in a white area, a current collecting disc is welded for use after a subsequent flattening process, but after the pole piece is subjected to laser die cutting to form the tab, the tab is easy to turn over when passing through a roller for transmission, if the tab is not detected to turn over during quality inspection, after the pole piece is rolled into an electric core, short circuit inside the battery is easy to cause, the safety quality of the product is seriously influenced, and therefore, the tab needs to be subjected to rolling pressing to form reinforcing ribs by the die cutting, the strength of the tab is enhanced, and then the tab is prevented from turning over during transportation.
The utility model discloses a pole piece processing device, which comprises a first rolling mechanism, a second rolling mechanism and a laser cutting device which are sequentially arranged, wherein the first rolling mechanism comprises a first forming roller and a first matching roller which are oppositely arranged, the first forming roller comprises a first convex part, and the first convex part is matched with the first matching roller so as to form a first reinforcing convex part on the edge of a pole piece; the second rolling mechanism comprises a second forming roller and a second matching roller which are oppositely arranged, the second forming roller and the first matching roller are positioned on one side of the edge of the pole piece, the second matching roller and the first forming roller are positioned on the other side of the edge of the pole piece, the second forming roller comprises a second convex part, and the second convex part is matched with the second matching roller so that the edge of the pole piece forms a second reinforcing convex part; the laser cutting device is arranged to cut the edge of the pole piece to form a pole lug with a first reinforcing convex part and a second reinforcing convex part.
According to the technical scheme, the first rolling mechanism and the second rolling mechanism are adopted to roll the pole lug of the pole piece to form the reinforcing convex parts (reinforcing ribs) to improve the structural strength of the pole lug, the two rolling mechanisms are respectively positioned on two side surfaces of the pole piece, and the rolled reinforcing convex parts protrude towards two directions;
secondly, among the above-mentioned technical scheme, the cooperation roller corresponds the forming roll and sets up, can't support the middle coating region of pole piece, and the pole piece is sunken to the middle to lead to the inaccurate problem in both sides limit roll extrusion position easily to appear.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a can form indentation device of effective strengthening rib to utmost point ear to solve current utmost point ear indentation device and easily appear the strengthening rib when carrying out two-sided roll extrusion and offset and the unsafe problem in roll extrusion position.
The technical scheme of the utility model is realized like this: the utility model provides a tab indentation device, which comprises a support and a rolling mechanism arranged on the support; the rolling mechanism comprises a first forming roller, a second forming roller and matching rollers, the second forming roller is positioned at the downstream of the first forming roller along the feeding direction of the pole piece, and the matching rollers are respectively arranged opposite to the first forming roller and the second forming roller one by one;
the first forming roller and the second forming roller are provided with convex edges, and a plurality of convex edges are arranged at intervals and are paved on the roller surface of the first forming roller or the second forming roller;
the first forming roller and the second forming roller are matched with the matching roller to clamp and roll the supplied materials of the pole pieces to form reticular reinforcing ribs protruding towards the same side of the supplied materials of the pole pieces.
On the basis of the technical scheme, preferably, the number of the rolling mechanisms is two, and the two rolling mechanisms are symmetrically distributed on two sides of the pole piece incoming material along the direction perpendicular to the transmission direction of the pole piece incoming material.
On the basis of the above technical solution, preferably, the two first forming rollers of the two rolling mechanisms share the same matching roller, and the two second forming rollers of the two rolling mechanisms also share the same matching roller.
On the basis of the above technical scheme, preferably, both ends of the first forming roll and the second forming roll are provided with arc chamfers.
On the basis of the above technical solution, preferably, the rib on the first forming roll is arranged to be inclined with respect to the axis thereof, the rib on the second forming roll is arranged to be inclined with respect to the axis thereof, and the inclination directions of the rib on the first forming roll and the rib on the second forming roll are opposite.
On the basis of the technical scheme, the device is preferable to further comprise two telescopic mechanisms, the two telescopic mechanisms are arranged on the support, the first forming roller and the second forming roller are respectively fixed on one telescopic mechanism, and the telescopic mechanisms are used for adjusting the distance between the first forming roller and the second forming roller relative to the matching rollers.
On the basis of the above technical solution, preferably, the telescopic mechanism includes a wheel carrier and a power source, wherein,
the first forming roller or the second forming roller is rotationally arranged on the wheel carrier;
one end of the power source is fixed on the support, and the other end of the power source is connected with the wheel carrier.
On the basis of the above technical solution, preferably, the power source is a double-shaft cylinder.
On the basis of the above technical solution, preferably, the power source is an electric push rod.
On the basis of the technical scheme, the roller is preferable to further comprise a glue layer, and the glue layer is wrapped on the roller surface of the matching roller.
The utility model discloses a utmost point ear indentation device has following beneficial effect for prior art:
(1) Divide into the setting of low reaches through first forming roll in the mechanism of will rolling and second forming roll, first forming roll and second forming roll are located the same one side that the pole piece supplied materials, and the bead on first forming roll cooperatees with the bead on the second forming roll and can roll out netted strengthening rib on the pole piece, it can avoid appearing rolling in the pole piece from both sides and lead to appearing the problem that the strengthening rib offsets each other, can effectively guarantee the regional structural strength of pole piece margin, make it have good laser film cutting stability, and after cross cutting out the utmost point ear, the utmost point ear has good roller stability of crossing, be difficult for rolling over.
(2) The two first forming rollers of the two rolling mechanisms share the same matching roller, and the two second forming rollers of the two rolling mechanisms also share the same matching roller, so that when rolling is carried out, the middle coating area of the pole piece can be effectively supported, the pole piece can be prevented from being deformed in a concave manner, and the accuracy of the rolling position is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective view of a tab indentation device of the present invention;
fig. 2 is a composition diagram of a roller press of the tab indentation apparatus of the present invention;
fig. 3 is a structural diagram of a point a of the tab indentation apparatus of the present invention;
fig. 4 is a schematic diagram of a first forming roller rib arrangement structure of the tab indentation apparatus of the present invention;
fig. 5 is a schematic view of a second forming roller rib arrangement structure of the tab indentation apparatus of the present invention;
fig. 6 is a schematic view of the structure of the adhesive layer wrapped by the matching roller of the tab indentation device of the present invention;
FIG. 7 is a structural diagram of a pole piece before rolling;
FIG. 8 is a structural diagram of a rolled pole piece;
fig. 9 is a view of the first forming roller rib deformation structure of the tab indentation apparatus of the present invention;
fig. 10 is a structural view of the deformation of the second forming roller convex edge of the tab indentation device of the present invention.
In the figure: the device comprises a support 1, a rolling mechanism 2, a first forming roller 201, a second forming roller 202, a matching roller 203, a convex rib 3, an arc chamfer 4, a telescopic mechanism 5, a wheel carrier 501, a power source 502 and a glue layer 6; pole piece S, margin area 100, reinforcing rib 200, coating area 300.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
In the existing tab indentation device, the forming rollers for rolling the tab reinforcing ribs are mostly straight embossing, and the tab reinforcing effect is limited; in part of the double-sided indentation device, because the forming rollers are free rollers and are not driven by power, the angular displacement of the forming rollers cannot be controlled, after one reinforcing rib is rolled by an upstream forming roller, the downstream forming roller is easy to roll on the reinforcing rib pressed by the upstream forming roller, so that the reinforcing ribs are mutually offset, and the lug reinforcing effect cannot be achieved; therefore, the technical scheme is to provide a common tab indentation device to solve the existing technical problems.
As shown in fig. 1-8, the utility model discloses a utmost point ear indentation device, including support 1, rolling mechanism 2, bead 3, circular arc chamfer 4 and telescopic machanism 5.
The rolling mechanism 2 is installed on the support 1, the rolling mechanism 2 comprises a first forming roller 201, a second forming roller 202 and a matching roller 203, the second forming roller 202 is located at the downstream of the first forming roller 201 along the pole piece feeding direction, and the matching roller 203 is respectively arranged opposite to the first forming roller 201 and the second forming roller 202 one by one; the first forming roller 201 and the second forming roller 202 are provided with convex edges 3, and a plurality of convex edges 3 are arranged at intervals to be paved on the roller surface of the first forming roller 201 or the second forming roller 202; the first forming roller 201 and the second forming roller 202 cooperate with the roller 203 to clamp and roll the incoming material of the pole piece to form a mesh reinforcing rib protruding towards the same side of the incoming material of the pole piece.
According to the structure, when the pole piece S passes through the middle of the first forming roller 201, the second forming roller 202 and the matching roller 203, the pole piece S can be rolled by the first forming roller 201 and the second forming roller 202, the blank area 100 on the side edge of the pole piece S can be rolled to form the reticular reinforcing rib 200, so that the blank area 100 has good die cutting stability when the shape of the pole piece is die-cut, and the pole piece has good roller passing stability and is not easy to turn over when being conveyed by a conveying roller after the die cutting. Secondly, because the first forming roller 201 and the second forming roller 202 are located on the same side of the incoming pole piece, the problem that the reinforcing ribs counteract each other during rolling is avoided.
Specifically, the rib 3 on the first forming roll 201 is arranged obliquely relative to the axis line thereof, the rib 3 on the second forming roll 202 is arranged obliquely relative to the axis line thereof, and the inclination directions of the rib 3 on the first forming roll 201 and the rib 3 on the second forming roll 202 are opposite. In this way, the blank area 100 of the pole piece S is first rolled by the first forming roller 201 to form the inclined reinforcing ribs, and then rolled by the second forming roller 202 to form the mesh reinforcing ribs 200 in the blank area 100.
In this embodiment, as a preferable mode, the number of the rolling mechanisms 2 is two, and the two rolling mechanisms 2 are symmetrically distributed on two sides of the pole piece incoming material along the direction perpendicular to the transmission direction of the pole piece incoming material, so that the blank areas 100 on two sides of the pole piece are rolled simultaneously.
In the existing tab indentation device, the matching roller 203 is usually arranged corresponding to a forming roller, under the condition, the middle coating area 300 of the pole piece S cannot be effectively supported, if the pole piece S is not tensioned to the right, the middle of the pole piece S is sunken, two sides of the pole piece S are pulled to move towards the middle, and the phenomenon of pressure deviation is easy to occur during stamping.
In order to realize the matching or the mutual separation of the first forming roller 201 and the second forming roller 202 with the matching roller 203, the device is provided with two telescoping mechanisms 5, the two telescoping mechanisms 5 are arranged on the support 1, the first forming roller 201 and the second forming roller 202 are respectively fixed on one telescoping mechanism 5, and the telescoping mechanisms 5 are used for adjusting the distance between the first forming roller 201 and the second forming roller 202 relative to the matching roller 203.
Specifically, the telescopic mechanism 5 comprises a wheel carrier 501 and a power source 502, wherein the first forming roller 201 or the second forming roller 202 is rotatably arranged on the wheel carrier 501; one end of the power source 502 is fixed on the support 1, and the other end is connected with the wheel frame 501. In this way, the power source 502 can drive the wheel frame 501 to move, so as to drive the first forming roller 201 or the second forming roller 202 to approach or move away from the matching roller 203.
Therefore, when the pole piece S is threaded, each forming roller can be separated from the matching roller 203, so that the pole piece is conveniently arranged on the production line, and then, before the pole piece S enters the production line, a detection mechanism needs to be added to detect whether the blank areas 100 on the two sides of the pole piece are damaged or not, if the damaged edge of the pole piece S is detected, when the damaged position moves to the indentation device, the power source 502 can drive each forming roller to be separated from the matching roller 203 through the wheel carrier 501, and the roll-in is continued after the damaged position of the pole piece S is skipped, so that the damage increase caused by the roll-in to the damaged position is prevented, and the condition that the belt is broken in the subsequent conveying process of the pole piece S is avoided.
A power source 502 of the indentation device adopts a double-shaft cylinder or an electric push rod, when the power source 502 adopts the electric push rod, the distance between each forming roller and the matching roller 203 can be accurately controlled, so that the depth of the rolled reinforcing ribs is controlled, but the cost is relatively high; the power source 502 can also adopt a double-shaft cylinder, is suitable for occasions with low rolling precision control requirements, has relatively low cost, can be coated with the glue layer 6 on the roller surface of the matching roller 203, has good elasticity, and can avoid crushing the pole piece S due to stroke errors of the cylinder.
Because the forming roller realizes the rolling of the pole piece S through the convex edges 3, and in order to avoid the sharp corners of the convex edges 3 from puncturing the pole piece S, the end part of the forming roller is provided with the arc chamfer 4, so that the corners of the convex edges 3 are in smooth transition, and the pole piece S is prevented from being crushed.
As another embodiment of the present invention, in order to form the mesh-shaped reinforcing ribs 200 in the blank area of the pole piece S, the apparatus employs a first forming roller 201 and a second forming roller 202, specifically as shown in fig. 9-10, ribs 3 may be disposed on the first forming roller 201 along the radial direction thereof, the ribs 3 are disposed along the axial direction of the first forming roller 201, the ribs 3 are disposed on the surface of the second forming roller 202 along the circumferential direction thereof, and the ribs 3 are disposed along the radial direction of the second forming roller 202, such that the first forming roller 201 can roll a plurality of parallel reinforcing ribs in the blank area 100 of the pole piece S, and after the second forming roller 202 rolls, the formed reinforcing ribs are staggered with the reinforcing ribs rolled by the first forming roller 201, thereby forming the mesh-shaped reinforcing ribs 200.
The method comprises the following specific implementation steps:
during working, a pole piece S is threaded through the first forming roller 201, the second forming roller 202 and the matching roller 203, then the power source 502 drives the wheel carrier 501 and the forming rollers to move until the forming rollers and the matching roller 203 clamp the pole piece S, and then in the advancing process of the pole piece S, the blank leaving area 100 of the pole piece S is rolled through the first forming roller 201 and the second forming roller 202, so that the blank leaving area of the pole piece S can form a net-shaped reinforcing rib 200, the net-shaped reinforcing rib has a good reinforcing effect on a polar ear, and the problem that reinforcing ribs are offset easily caused by up-down rolling can be avoided.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a utmost point ear indentation device which characterized in that: comprises a support (1) and a rolling mechanism (2) arranged on the support (1); the rolling mechanism (2) comprises a first forming roller (201), a second forming roller (202) and a matching roller (203), the second forming roller (202) is located at the downstream of the first forming roller (201) along the feeding direction of the pole pieces, and the matching roller (203) is respectively arranged opposite to the first forming roller (201) and the second forming roller (202) one by one;
the first forming roller (201) and the second forming roller (202) are provided with convex edges (3), and a plurality of convex edges (3) are arranged at intervals and are paved on the roller surface of the first forming roller (201) or the second forming roller (202);
the first forming roller (201) and the second forming roller (202) are matched with the matching roller (203) to clamp and roll the pole piece incoming material to form net-shaped reinforcing ribs protruding towards the same side of the pole piece incoming material.
2. The tab indentation apparatus of claim 1, wherein: the quantity of rolling mechanism (2) is provided with two, two rolling mechanism (2) along perpendicular pole piece supplied materials transmission direction symmetric distribution in the both sides of pole piece supplied materials.
3. The tab indentation apparatus of claim 2, wherein: the two first forming rollers (201) of the two rolling mechanisms (2) share the same matching roller (203), and the two second forming rollers (202) of the two rolling mechanisms (2) also share the same matching roller (203).
4. The tab indentation apparatus of claim 1, wherein: and arc chamfers (4) are arranged at two ends of the first forming roller (201) and the second forming roller (202).
5. The tab indentation apparatus of claim 1, wherein: the convex ribs (3) on the first forming roller (201) are obliquely arranged relative to the axial lead of the first forming roller, the convex ribs (3) on the second forming roller (202) are obliquely arranged relative to the axial lead of the second forming roller, and the inclination directions of the convex ribs (3) on the first forming roller (201) and the convex ribs (3) on the second forming roller (202) are opposite.
6. The tab indentation apparatus of claim 1, wherein: the device is characterized by further comprising two telescopic mechanisms (5), wherein the two telescopic mechanisms (5) are arranged on the support (1), the first forming roller (201) and the second forming roller (202) are respectively fixed on one telescopic mechanism (5), and the telescopic mechanisms (5) are used for adjusting the distance between the first forming roller (201) and the second forming roller (202) relative to the matching roller (203).
7. The tab indentation apparatus of claim 6, wherein: the telescopic mechanism (5) comprises a wheel carrier (501) and a power source (502), wherein,
the first forming roller (201) or the second forming roller (202) is rotatably arranged on the wheel carrier (501);
one end of the power source (502) is fixed on the support (1), and the other end of the power source is connected with the wheel carrier (501).
8. The tab indentation apparatus of claim 7, wherein: the power source (502) is a double-shaft cylinder.
9. The tab indentation apparatus of claim 7, wherein: the power source (502) is an electric push rod.
10. The tab indentation apparatus of claim 1, wherein: the glue coating machine is characterized by further comprising a glue layer (6), wherein the glue layer (6) is coated on the roll surface of the matching roll (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222605842.2U CN218351504U (en) | 2022-09-30 | 2022-09-30 | Utmost point ear indentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222605842.2U CN218351504U (en) | 2022-09-30 | 2022-09-30 | Utmost point ear indentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218351504U true CN218351504U (en) | 2023-01-20 |
Family
ID=84894224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222605842.2U Active CN218351504U (en) | 2022-09-30 | 2022-09-30 | Utmost point ear indentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218351504U (en) |
-
2022
- 2022-09-30 CN CN202222605842.2U patent/CN218351504U/en active Active
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