CN218656340U - Composite press roller for pole piece rolling and rolling equipment comprising same - Google Patents
Composite press roller for pole piece rolling and rolling equipment comprising same Download PDFInfo
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- CN218656340U CN218656340U CN202222862536.7U CN202222862536U CN218656340U CN 218656340 U CN218656340 U CN 218656340U CN 202222862536 U CN202222862536 U CN 202222862536U CN 218656340 U CN218656340 U CN 218656340U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a battery processing equipment technical field specifically provides a roll-in equipment that is used for compound compression roller of pole piece roll-in and includes this compound compression roller, aims at solving current straight roller and produces the deformation in both sides when carrying out the roll-in to the pole piece, leads to the compaction density of pole piece both sides to be greater than the problem of middle compaction density. Therefore, the utility model discloses a compound compression roller includes compression roller and lower compression roller, goes up compression roller and/or compression roller down and is connected formation in proper order by straight roller section and curved roller section in turn, and the quantity of curved roller section is two at least, and the cross sectional diameter at curved roller section middle part is greater than the cross sectional diameter of curved roller section tip, and the cross sectional diameter at curved roller section middle part is greater than the diameter of straight roller section, and straight roller section is distinguished corresponding to the empty paper tinsel of pole piece, and the curved roller section is distinguished corresponding to the coating of pole piece. When the pole piece is rolled, the arc-shaped roller section is in contact with the coating area, the uneven stress of the coating area can be relieved, the consistency of the compacted density of the pole piece is improved, and meanwhile, the straight roller section is used for flattening the empty foil area to prevent the empty foil area from being wrinkled.
Description
Technical Field
The utility model relates to a battery processing equipment technical field specifically provides a roll-in equipment that is used for compound compression roller of pole piece roll-in and includes this compound compression roller.
Background
In the preparation process of the lithium battery, the rolling of the battery pole piece is an essential step. The compacted density of the coated pole piece can be improved after rolling, so that the energy density of the lithium ion battery is improved.
In the prior art, a straight roller is usually used for rolling a pole piece, and in the process of rolling the pole piece, the two sides of the straight roller are deformed due to the main cylinder pressure at the two sides and the reaction force of a coating, so that the corresponding roll gap at the edge of the coating in the width direction is smaller, the rolling pressure is larger, and finally, the compaction density at the two sides of the pole piece is greater than that in the middle of the pole piece.
Therefore, there is a need in the art for a new solution to the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least, promptly, solve current straight roller to a certain extent at the in-process that carries out the roll-in to the pole piece owing to receive the reaction force of both sides master cylinder pressure and coating and make straight roller both sides produce and warp at least, lead to the compaction density of pole piece both sides to be greater than the problem of the compaction density in the middle of the pole piece.
In a first aspect, the utility model provides a compound compression roller for pole piece roll-in, this compound compression roller is including relative last compression roller and the lower compression roller that sets up, go up the compression roller and/or the lower compression roller is connected formation in turn by curved roller section and straight roller section in proper order, the quantity of curved roller section is two at least, wherein, the cross sectional diameter at curved roller section middle part is greater than the cross sectional diameter of curved roller section tip, the cross sectional diameter at curved roller section middle part is greater than the diameter of straight roller section, straight roller section corresponding to the empty paper tinsel district of pole piece, curved roller section corresponding to the coating district of pole piece.
In the preferable technical scheme of the composite press roll, the arc-shaped roll section is smoothly connected with the straight roll section.
In the preferable technical scheme of the composite press roll, the diameter of the section of the end part of the arc-shaped roll section is larger than or equal to that of the straight roll section.
In the preferable technical scheme of the above composite press roller, the arc roller section comprises a first arc part and a second arc part which are symmetrically arranged, the first end of the first arc part is smoothly connected with the first end of the second arc part, the section diameter of the first arc part is gradually decreased from the first end of the first arc part to the second end of the first arc part, the section diameter of the second arc part is gradually decreased from the first end of the second arc part to the second end of the second arc part, and the section diameter of the second end of the first arc part and the section diameter of the second end of the second arc part are equal to the diameter of the straight roller section.
In the preferable technical scheme of the composite press roll, the number of the straight roll sections is less than that of the arc roll sections.
In the preferable technical scheme of the composite pressing roller, the length of the straight roller section is adaptive to the width of the empty foil area of the pole piece, and the length of the arc roller section is adaptive to the width of the coating area of the pole piece.
In the preferable technical scheme of the composite press roller, the upper press roller and the lower press roller are respectively formed by sequentially and alternately connecting the straight roller sections and the arc-shaped roller sections, wherein the straight roller sections of the upper press roller and the straight roller sections of the lower press roller are correspondingly arranged, and the arc-shaped sections of the upper press roller and the arc-shaped sections of the lower press roller are correspondingly arranged.
In the preferable technical scheme of the composite press roller, the upper press roller and/or the lower press roller comprises a cylindrical roller and arc-shaped bosses sleeved outside the cylindrical roller, the number of the arc-shaped bosses is at least two, two or more, the arc-shaped bosses are arranged along the length direction of the cylindrical roller at intervals, and the arc-shaped bosses and the surface of the cylindrical roller are sequentially and alternately arranged to form arc-shaped roller sections and straight roller sections.
In a preferred embodiment of the above composite press roll, the arc-shaped boss is detachably mounted on the outside of the cylindrical roll.
In a second aspect, the utility model provides a rolling equipment, the utility model discloses a rolling equipment includes the aforesaid compound compression roller.
Under the condition of adopting above-mentioned technical scheme, set the form that forms into by arc roller section and straight roller section in proper order alternate connection with the compound compression roller, can make when roll-in to the pole piece, the straight roller section of compound compression roller is corresponding with the empty foil district on the pole piece, the arc roller section of compound compression roller is corresponding with the coating district on the pole piece, thereby avoid producing the deformation because of compound compression roller both sides and leading to the pole piece along the problem that the roll gap that the edge of coating width direction corresponds is little, rolling pressure is big, and then the pole piece is along the uniformity of the compaction density of coating width direction, the risk of disconnected area when having reduced the pole piece roll-in, the straight roller section is rolled up the empty foil district of pole piece simultaneously, prevent to wrinkle in roll-in process empty foil district, improve the quality of pole piece.
Further, the arc-shaped roller section and the straight roller section are smoothly connected, so that the pole piece can be prevented from being scratched by edges and corners of the connection part of the arc-shaped roller section and the straight roller section, and the risk of the pole piece breaking is reduced.
Still further, the diameter of the cross section of the end part of the arc-shaped roller section is set to be larger than or equal to the diameter of the straight roller section, so that the coating of the coating area of the pole piece can be prevented from being scratched due to the overlarge diameter of the straight roller section, meanwhile, the diameter of the cross section of the end part of the arc-shaped roller section is set to be larger than or equal to the diameter of the straight roller section, the flattening effect of the straight roller section on the empty foil area of the pole piece can be further improved, and therefore the empty foil area is prevented from being wrinkled.
Still further, through setting up the form of arc roller section into first arc portion and second arc portion, can make the roll pressure that the coating on the coating area on the pole piece received reduce from middle to edge gradually to the compaction density of edge is weakened better, improves the uniformity of the compaction density of the coating in the coating area better, and then improves the quality of pole piece.
Furthermore, the upper pressing roller and the lower pressing roller are both arranged in a mode that the arc-shaped roller sections and the straight roller sections are sequentially and alternately connected, so that the uniformity of the compacted density of coating areas on two sides of the pole piece along the coating width direction can be improved, and the quality of the pole piece is improved.
Further, compared with the mode that the upper compression roller is arranged to be welded through the arc-shaped roller sections and the straight roller sections in sequence in an alternating mode, the mode that the arc-shaped bosses are sleeved outside the cylindrical roller is arranged on the upper compression roller, the machining efficiency of the upper compression roller can be improved, and meanwhile, the precision of the upper compression roller is improved.
Still further, through setting up arc boss into to be connected with cylindric roller is detachable, be convenient for adjust the distribution distance of arc boss on cylindric roller according to the distance between the coating district on the pole piece and the empty foil district to the adaptation rolls different pole pieces, simultaneously, be convenient for install the arc boss of different width according to the size of the coating district on the pole piece, with the application range of improvement composite compression roller.
Furthermore, the utility model discloses the roll-in equipment that further provides on above-mentioned technical scheme's basis is owing to adopted the compound compression roller that the aforesaid introduced, and then has possessed the beneficial effect that above-mentioned compound compression roller possessed, compares in the roll-in equipment before improving, the utility model discloses a roll-in equipment is when carrying out the roll-in to the pole piece for the coating area compaction density uniformity of the pole piece after the roll-in is higher, the fold in the empty foil district on the pole piece still less, the risk that the broken tape took place for the pole piece is lower, and the quality of the pole piece of processing is higher.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the composite compression roller and the pole piece of the present invention;
fig. 2 is a first schematic structural view of the upper compression roller of the present invention;
fig. 3 is a schematic structural diagram of the upper compression roller of the present invention.
List of reference numbers:
1. compounding press rolls; 11. an upper compression roller; 1101. a cylindrical roller; 1102. an arc-shaped boss; 12. a lower pressing roller; 131. an arc-shaped roll section; 1311. a first arcuate portion; 1312. a second arcuate portion; 132. a straight roll section; 21. a current collector; 221. a first coated region; 222. a first empty foil region; 231. a second coated region; 232. a second foil empty area.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms "outer", "upper", "lower", "left" and "right" are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "disposed," and "connected" in the description of the present invention are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of the composite compression roller and the pole piece of the present invention, and fig. 2 is a schematic structural diagram of the upper compression roller of the present invention.
As shown in fig. 1 and fig. 2, the electrode plate of the present invention includes a current collector 21, a first coating region 221 disposed above the current collector 21, and a second coating region 231 disposed below the current collector 21, wherein the number of the first coating regions 221 is multiple and the multiple first coating regions 221 are spaced above the current collector 21, a first empty foil region 222 is formed between two adjacent first coating regions 221, the number of the second coating regions 231 is multiple and the multiple second coating regions 231 are spaced below the current collector 21, and a second empty foil region 232 is formed between two second coating regions 231, wherein the first coating regions 221 and the second coating regions 231 are correspondingly disposed, and the first empty foil region 222 and the second empty foil region 232 are correspondingly disposed.
As shown in fig. 1 and fig. 2, the utility model discloses a compound compression roller 1 is including relative last compression roller 11 and lower compression roller 12 that sets up, go up compression roller 11 and lower compression roller 12 by arc roller section 131 and straight roller section 132 connect formation in proper order in turn, wherein, the cross-sectional diameter at arc roller section 131 middle part is greater than the cross-sectional diameter of arc roller section 131 tip, the cross-sectional diameter at arc roller section 131 middle part is greater than the diameter of straight roller section 132, it is located the top of pole piece to go up compression roller 11, and the arc roller section 131 of going up compression roller 11 corresponds with first coating region 221, the straight roller section 132 of going up compression roller 11 corresponds with first empty foil region 222, lower compression roller 12 is located the below of pole piece, and the arc roller section 131 of lower compression roller 12 corresponds with second coating region 231, the straight roller section 132 of lower compression roller 12 corresponds with second empty foil region 232.
Through the arrangement, on one hand, the composite press roller 1 is arranged into a form formed by sequentially and alternately connecting the arc-shaped roller sections 131 and the straight roller 132, so that when a pole piece is rolled, the straight roller sections 132 of the composite press roller 1 correspond to the empty foil areas on the pole piece, and the arc-shaped roller sections 131 of the composite press roller 1 correspond to the coating areas on the pole piece, so that the problems of small roller gaps and large rolling pressure corresponding to the edges of the pole piece along the coating width direction due to deformation of two sides of the composite press roller 1 are avoided, the consistency of the compaction density of the pole piece along the coating width direction is greatly improved, the risk of strip breakage of the pole piece during rolling is reduced, meanwhile, the straight roller sections 132 roll the empty foil areas of the pole piece, and the hollow foil areas are prevented from being wrinkled during rolling; on the other hand, the upper pressure roller 11 and the lower pressure roller 12 are arranged in a mode that the arc-shaped roller sections 131 and the straight roller sections 132 are sequentially and alternately connected, so that the compaction density uniformity of coating areas on two sides of the pole piece along the coating width direction can be improved, and the quality of the pole piece is improved.
It should be noted that the cross-sectional diameter of the present invention is the diameter of the cross-section, for example, the cross-sectional diameter of the arc-shaped roller section is the diameter of the cross-section of the arc-shaped roller section.
It should be noted that, in practical applications, it is not limited to the upper press roll 11 and the lower press roll 12 being formed by sequentially and alternately connecting the arc-shaped roll segments 131 and the straight roll segments 132, for example, the upper press roll 11 may be only formed by sequentially and alternately connecting the arc-shaped roll segments 131 and the straight roll segments 132, or the lower press roll 12 may be only formed by sequentially and alternately connecting the arc-shaped roll segments 131 and the straight roll segments 132, and so on, and such flexible adjustment and change do not deviate from the principle and scope of the present invention, which should be included in the protection scope of the present invention. It is of course preferable that both the upper press roll 11 and the lower press roll 12 are provided in a form in which arc-shaped roll segments 131 and straight roll segments 132 are alternately connected in sequence.
The composite press roll of the present invention will be described in detail below by taking the upper press roll as an example.
Preferably, as shown in fig. 1 and 2, the curved roller section 131 and the straight roller section 132 of the upper press roller 11 of the present invention are smoothly connected.
Through such setting, can avoid there being the edges and corners and scratch the pole piece in the junction of arc roller section 131 and straight roller section 132, reduce the risk that the pole piece broke the area.
It should be noted that, in practical applications, it is not limited to setting the connection between the curved roller section 131 and the straight roller section 132 to be smoothly connected, for example, the connection between the curved roller section 131 and the straight roller section 132 may be set to be non-smoothly connected, for example, there is an edge angle at the connection between the curved roller section 131 and the straight roller section 132, and so on, and such adjustment and change of the specific connection form between the curved roller section 131 and the straight roller section 132 do not deviate from the principle and scope of the present invention, and all should be included in the protection scope of the present invention. It is of course preferred that the junction of the curved roll segment 131 and the straight roll segment 132 is arranged to be smoothly connected.
It should be noted that, in practical applications, a person skilled in the art can set the diameter of the end of the curved roller section 131 smaller than the diameter of the straight roller section 132, or can set the diameter of the end of the curved roller section 131 not smaller than the diameter of the straight roller section 132, and so on, which can be adjusted and changed flexibly without departing from the principle and scope of the present invention, and all should be included in the protection scope of the present invention.
Preferably, the diameter of the cross section of the end of the arc-shaped roller section 131 is greater than or equal to the diameter of the straight roller section 132.
Through such setting, can avoid the diameter of straight roller section 132 too big and with the coating scratch in the coating district of pole piece, simultaneously, set the cross-sectional diameter of arc roller section 131 tip to be greater than or equal to the diameter of straight roller section 132, can further improve the flattening effect of straight roller section 132 to the empty foil district of pole piece to prevent the empty foil district from crumpling better.
It should be noted that, in practical applications, a person skilled in the art may set the smooth connection between the curved roller section 131 and the straight roller section 132 to directly connect the end of the curved roller section 131 with the end of the straight roller section 132, wherein the surface of the straight roller section 132 is tangent to the surface of the curved roller section 131, and accordingly, the diameter of the cross section of the end of the curved roller section 131 is set to be equal to the diameter of the straight roller section 132, or may set the smooth connection between the curved roller section 131 and the straight roller section 132 to be realized by a connecting member, wherein one end of the connecting member is smoothly connected with the end of the curved roller section 131, and the other end of the connecting member is smoothly connected with the end of the straight roller section 132, and so on, such flexible adjustment and change do not depart from the principles and scope of the present invention, and all should be included in the protection scope of the present invention.
Preferably, as shown in fig. 2, the arcuate roller segment 131 of the present invention includes a first arcuate portion 1311 and a second arcuate portion 1312 symmetrically disposed, and the first end of the first arcuate portion 1311 and the first end of the second arcuate portion 1312 intersect on an α plane, wherein the left end of the α plane is the first end of the first arcuate portion 1311, denoted as a end, and the right end of the α plane is the first end of the second arcuate portion 1312, denoted as B end, and the first end (a end) of the first arcuate portion 1311 and the first end (B end) of the second arcuate portion 1312 are smoothly connected, the second end of the first arcuate portion 1311 is denoted as C end, and the second end of the second arcuate portion 1312 is denoted as D end, and the cross-sectional diameter of the first arcuate portion 1311 decreases sequentially from the first end (i.e., a end) of the first arcuate portion 1311 to the second end (i.e., C end) of the first arcuate portion 1311, and the cross-sectional diameter of the second arcuate portion 1312 decreases sequentially from the first end (B end) of the second arcuate portion 1311 to the second end (i.e., C end) of the second arcuate portion 1312, and the cross-sectional diameter of the second arcuate portion 1311 decreases sequentially from the first end (D end) to the second end (C end of the second arcuate portion 132.
Through the arrangement, the rolling pressure on the coating area on the pole piece is gradually reduced from the middle to the edge, so that the compaction density of the edge is weakened better, the consistency of the compaction density of the coating in the coating area is improved better, and the quality of the pole piece is improved.
It should be noted that, in practical applications, the configuration of the curved roller section 131 is not limited to the first curved portion 1311 and the second curved portion 1312, for example, the curved roller section 131 may also be configured as the first curved portion, the second curved portion and the third curved portion, wherein the third curved portion is located between the first curved portion and the second curved portion, and the cross-sectional diameter of the third curved portion is equal, the cross-sectional diameters of the first curved portion and the second curved portion decrease from the end close to the third curved portion to the end far from the third curved portion, and so on, and such adjustment and change of the specific configuration type of the curved roller section 131 should not deviate from the principle and scope of the present invention, and all should be included in the protection scope of the present invention. It is of course preferred to provide the arcuate roller segments 131 in the form of a first arcuate portion 1311 and a second arcuate portion 1312.
It should be noted that, in practical applications, a person skilled in the art may set the number of the curved roller sections 131 to two, or may set the number of the curved roller sections 131 to three, or may set the number of the curved roller sections 131 to a plurality, and so on, and such adjustment and change of the specifically set number of the curved roller sections 131 do not deviate from the principle and scope of the present invention, and all should be included in the protection scope of the present invention.
Illustratively, as shown in fig. 1 and 2, the number of the arcuate roller sections 131 of the present invention is three.
It should be noted that, in practical applications, a person skilled in the art may set the number of the straight roller sections 132 equal to the number of the arc-shaped roller sections 131, or may set the number of the straight roller sections 132 smaller than the number of the arc-shaped roller sections 131, and so on, and such adjustment and change of the specific set number of the straight roller sections 132 and the arc-shaped roller sections 131 do not deviate from the principle and scope of the present invention, and all should be included in the protection scope of the present invention.
Preferably, the number of the straight roller sections 132 of the upper compression roller 11 of the present invention is smaller than the number of the arc-shaped roller sections 131.
Through such an arrangement, the number of the straight roller sections 132 can be reduced, thereby reducing the cost of the upper press roller 11, and at the same time, the length of the upper press roller 11 can be reduced, thereby reducing the installation space of the upper press roller 11 on the compound device.
Illustratively, as shown in fig. 1 and 2, the number of the arc-shaped roller segments 131 is three, and the number of the straight roller segments 132 is two.
It should be noted that the length of the straight roller section 132 of the upper press roller is adapted to the width of the first empty foil area 222 of the pole piece, and the length of the arc roller section 131 is adapted to the width of the first coating area 221 of the pole piece, so that the straight roller section 132 and the arc roller section 131 can be respectively arranged corresponding to the empty foil area and the coating area on the pole piece, thereby reducing errors and improving the quality of the pole piece.
It should be further noted that, in practical applications, a person skilled in the art may set the upper pressing roller 11 to be a cylindrical roller and an arc-shaped boss (as shown in fig. 3) sleeved outside the cylindrical roller, wherein the number of the arc-shaped bosses is a plurality of and a plurality of arc-shaped bosses are distributed along the length direction of the cylindrical roller at intervals, the surface of the annular boss and the surface of the cylindrical roller are sequentially and alternately set to be the arc-shaped roller segment 131 and the straight roller segment 132, or the upper pressing roller 11 may also be set to be formed by sequentially and alternately welding the arc-shaped roller segment 131 and the straight roller segment 132, or the upper pressing roller 11 may also be set to be sequentially and alternately connected to be integrally formed by the arc-shaped roller segment 131 and the straight roller segment 132, and so on, such flexible adjustment and change do not deviate from the principles and ranges of the present invention should be included in the protection range of the present invention.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an upper press roller according to the present invention.
Preferably, as shown in fig. 3, the upper pressure roller 11 of the present invention includes a cylindrical roller 1101 and arc-shaped bosses 1102 sleeved outside the cylindrical roller, the number of the arc-shaped bosses 1102 is multiple and the multiple arc-shaped bosses 1102 are distributed along the length direction of the cylindrical roller 1101 at intervals, and the arc-shaped bosses 1102 and the surface of the cylindrical roller 1101 form the arc-shaped roller segments 131 and the straight roller segments 132 which are alternately arranged in sequence.
With such an arrangement, compared with a mode in which the upper pressure roller 11 is arranged to be welded alternately through the arc-shaped roller sections 131 and the straight roller sections 132 in sequence, the upper pressure roller 11 is arranged in a manner that the arc-shaped bosses 1102 are sleeved outside the cylindrical roller 1101, so that the processing efficiency of the upper pressure roller 11 can be improved, and meanwhile, the processing precision of the upper pressure roller 11 can also be improved.
It should be noted that, the assembly manner of the upper compression roller 11 is only shown in the present invention (fig. 3), and the specific shape of the arc-shaped boss 1102 is not limited, for example, the arc-shaped boss 1102 can be configured into any other possible shapes, and so on, and such flexible adjustment and change do not depart from the principle and scope of the present invention, and all should be included in the protection scope of the present invention.
It should be noted that, in practical applications, the number of the arc-shaped bosses 1102 is not limited to be plural, for example, the number of the arc-shaped bosses 1102 may also be two, and the adjustment and the change of the specific number of the arc-shaped bosses 1102 may not deviate from the principle and the scope of the present invention, and all should be included in the protection scope of the present invention.
It should be noted that, in practical applications, a person skilled in the art may set the arc-shaped boss 1102 to be welded with the cylindrical roller 1101, or may set the arc-shaped boss 1102 to be detachably connected with the cylindrical roller 1101, etc., and such adjustment and change of the specific installation manner between the arc-shaped boss 1102 and the cylindrical roller 1101 do not deviate from the principle and scope of the present invention, which should be included in the protection scope of the present invention.
Preferably, the arcuate bosses 1102 are removably coupled to the cylindrical roller 1101.
Through such setting, be convenient for adjust the distribution distance of arc boss 1102 on cylindric roller 1101 according to the distance between the coating district on the pole piece and the empty foil district to the adaptation rolls different pole pieces, simultaneously, be convenient for install the arc boss 1102 of different widths according to the size of the coating district on the pole piece, with the application scope who improves last compression roller 11.
It should be noted that, in practical application, although the present invention is described by taking the upper compression roller 11 as an example, this is not restrictive, the present invention is also applicable to the setting type and setting mode of the curved roller segment 131 and the straight roller segment 132 on the upper compression roller 11, and the like, and such flexible adjustment and change does not deviate from the principle and scope of the present invention, which should be included in the protection scope of the present invention.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions can be made on the related technical features by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions will fall into the protection scope of the invention.
Claims (10)
1. The composite press roller for pole piece rolling is characterized by comprising an upper press roller and a lower press roller which are oppositely arranged, wherein the upper press roller and/or the lower press roller are formed by sequentially and alternately connecting arc-shaped roller sections and straight roller sections, the number of the arc-shaped roller sections is at least two, the cross-sectional diameter of the middle part of each arc-shaped roller section is larger than that of the end part of each arc-shaped roller section, the cross-sectional diameter of the middle part of each arc-shaped roller section is larger than that of each straight roller section, each straight roller section corresponds to a hollow foil area of a pole piece, and each arc-shaped roller section corresponds to a coating area of the pole piece.
2. The composite roller for pole piece rolling of claim 1 wherein the curved roller section and the straight roller section are joined smoothly.
3. The composite roller for pole piece rolling of claim 2 wherein the diameter of the cross section of the end of the arcuate roller section is greater than or equal to the diameter of the straight roller section.
4. The composite pressure roller for pole piece rolling according to claim 3, wherein the curved roller section comprises a first curved portion and a second curved portion which are symmetrically arranged, a first end of the first curved portion and a first end of the second curved portion are smoothly connected, a cross-sectional diameter of the first curved portion decreases from the first end of the first curved portion to the second end of the first curved portion, a cross-sectional diameter of the second curved portion decreases from the first end of the second curved portion to the second end of the second curved portion, and the cross-sectional diameters of the second end of the first curved portion and the second end of the second curved portion are equal to the diameter of the straight roller section.
5. The composite pressure roller for pole piece rolling of claim 1 wherein the number of straight roller segments is less than the number of arcuate roller segments.
6. The composite pressure roller for pole piece rolling of claim 1 wherein the length of the straight roller section is adapted to the width of the empty foil area of the pole piece and the length of the arc roller section is adapted to the width of the coating area of the pole piece.
7. The composite pressing roller for pole piece rolling according to claim 1, wherein the upper pressing roller and the lower pressing roller are respectively formed by sequentially and alternately connecting the straight roller sections and the arc roller sections, wherein the straight roller sections of the upper pressing roller are arranged corresponding to the straight roller sections of the lower pressing roller, and the arc sections of the upper pressing roller are arranged corresponding to the arc sections of the lower pressing roller.
8. The composite pressing roller for pole piece rolling according to any one of claims 1 to 7, wherein the upper pressing roller and/or the lower pressing roller comprises a cylindrical roller and arc-shaped bosses sleeved outside the cylindrical roller, the number of the arc-shaped bosses is at least two, the arc-shaped bosses are distributed at intervals along the length direction of the cylindrical roller, and the arc-shaped roller sections and the straight roller sections which are sequentially and alternately arranged are formed on the surfaces of the arc-shaped bosses and the cylindrical roller.
9. The composite pressure roller for pole piece rolling of claim 8 wherein the arcuate bosses are removably mounted to the exterior of the cylindrical roller.
10. A calendering apparatus comprising a composite calender roll according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222862536.7U CN218656340U (en) | 2022-10-28 | 2022-10-28 | Composite press roller for pole piece rolling and rolling equipment comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222862536.7U CN218656340U (en) | 2022-10-28 | 2022-10-28 | Composite press roller for pole piece rolling and rolling equipment comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218656340U true CN218656340U (en) | 2023-03-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222862536.7U Active CN218656340U (en) | 2022-10-28 | 2022-10-28 | Composite press roller for pole piece rolling and rolling equipment comprising same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116544357A (en) * | 2023-07-06 | 2023-08-04 | 宁德时代新能源科技股份有限公司 | Back roller, coating system, coating method and cathode pole piece |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116544357A (en) * | 2023-07-06 | 2023-08-04 | 宁德时代新能源科技股份有限公司 | Back roller, coating system, coating method and cathode pole piece |
| CN116544357B (en) * | 2023-07-06 | 2023-11-17 | 宁德时代新能源科技股份有限公司 | Back roller, coating system, coating method and cathode pole piece |
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