CN209896172U - Rolling system capable of preventing battery pole piece from creasing - Google Patents

Rolling system capable of preventing battery pole piece from creasing Download PDF

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Publication number
CN209896172U
CN209896172U CN201920864778.5U CN201920864778U CN209896172U CN 209896172 U CN209896172 U CN 209896172U CN 201920864778 U CN201920864778 U CN 201920864778U CN 209896172 U CN209896172 U CN 209896172U
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roller
battery pole
pole piece
slitting
rolling
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CN201920864778.5U
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Chinese (zh)
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杨志明
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Shenzhen Xinyuren Polytron Technologies Inc
Shenzhen Xinyuren Technology Co Ltd
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Shenzhen Xinyuren Polytron Technologies Inc
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

A rolling system capable of preventing a battery pole piece from being wrinkled comprises an unreeling mechanism, a rolling machine, a reeling mechanism and a splitting mechanism, wherein the rolling machine comprises an upper pair of pressing rollers and a lower pair of pressing rollers, the rolling machine is used for pressing the battery pole piece, the battery pole piece comprises a longitudinal coating part and a longitudinal uncoated part, an active substance is coated on the longitudinal coating part, the longitudinal uncoated part is not coated with the active substance, and the battery pole piece is unreeled from the unreeling mechanism; the rolling mechanism rolls the rolled battery pole piece; the splitting mechanism 4 is positioned between the unwinding mechanism and the roller press, the splitting mechanism is provided with splitting cutters with the number equal to that of the longitudinal uncoated parts, and the splitting cutters split the longitudinal uncoated parts of the battery pole pieces to form a plurality of narrow battery pole pieces. Utilize the utility model discloses the battery pole piece of suppression has the advantage that can not form fold at the vertical uncoated portion of battery pole piece basically.

Description

Rolling system capable of preventing battery pole piece from creasing
Technical Field
The utility model relates to a battery pole piece roll-in equipment, especially a can prevent pincher trees roll-in system of battery pole piece.
Background
A lithium ion battery is a type of secondary battery that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. During the charge and discharge process, lithium ions are intercalated and deintercalated between the two electrodes: during charging, lithium ions are extracted from the positive electrode and are inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. The lithium ion battery has the advantages of large capacity and good safety, so the lithium ion battery is widely applied.
The positive and negative pole pieces of the lithium battery are key components of the lithium battery, and the quality of the positive and negative pole pieces of the lithium battery determines the quality of the lithium battery. In order to improve the coating efficiency of the positive and negative electrode plates of the lithium battery, the invention provides a longitudinal coating method, namely, the active material to be coated is coated along the length direction of a base material, at least one longitudinal uncoated part is left in the width direction of the base material, and the longitudinal coated part is divided into a plurality of strips. Since the thickness of the longitudinal direction coating portion is different from that of the longitudinal direction non-coating portion, wrinkles are formed on the longitudinal direction non-coating portion after the battery pole piece is rolled, and the processing of the subsequent process is affected.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a roll press system for preventing wrinkles of a battery electrode sheet, which can prevent wrinkles from being formed on a longitudinal uncoated portion.
The technical scheme of the utility model is that: the rolling system comprises an unreeling mechanism, a rolling machine, a reeling mechanism and a splitting mechanism, wherein the rolling machine comprises a pair of upper and lower pressing rollers, the rolling machine is used for pressing the battery pole piece, the battery pole piece comprises a longitudinal coating part and a longitudinal uncoated part, an active substance is coated on the longitudinal coating part, the active substance is not coated on the longitudinal uncoated part, and the battery pole piece is unreeled from the unreeling mechanism; the rolling mechanism rolls the rolled battery pole piece; the slitting mechanism 4 is arranged between the unwinding mechanism and the rolling machine, the slitting mechanism is provided with slitting cutters, the number of the slitting cutters is equal to that of the longitudinal uncoated parts between two adjacent longitudinal coating parts, and the slitting cutters slit the longitudinal uncoated parts of the battery pole pieces to form a plurality of narrow battery pole pieces.
It is right as the improvement of the utility model, it includes cutting machine frame and cutter module to cut the mechanism, the cutter module is located in the cutting machine frame, the cutter module includes the knife rest and establishes the branch cutter at the knife rest, divide the cutter to divide into and divide cutter and divide the cutter down, it sets up in pairs with the lower branch cutter to go up to divide the cutter.
As right the utility model discloses an improve, it still includes dust removal mechanism to cut the mechanism, dust removal mechanism gets rid of the dust on the battery pole piece.
As an improvement to the utility model, the dust removing mechanism is a brush roller with bristles.
As right the utility model discloses an it is the improvement, it still includes deironing mechanism to cut the mechanism, deironing mechanism passes through magnetic material and detaches the iron dust on the battery sheet.
As right the utility model discloses an it is right the improvement, the utility model discloses still include first degree of depth and remove wrinkle device, first degree of depth removes wrinkle device and establishes cutting mechanism with between the compression roller, first degree of depth removes wrinkle device and includes first drive roll to and with the first compression roller of first drive roll complex, first floating roll and first driven roller of crossing, and first tension roll, the battery pole piece of being cut under the traction of first drive roll and first compression roller, passes through first floating roll, first driven roller of crossing in proper order, and gets into between a pair of compression roller behind the first tension roll.
As right the utility model discloses an it is right the improvement, the utility model discloses still include the second degree of depth and remove the wrinkle device, the second degree of depth removes the wrinkle device and establishes between compression roller and the winding mechanism, the second degree of depth removes the wrinkle device and includes second tension roller, the driven roller of crossing of second, second floating roll, second drive roll in proper order to and with second drive roll complex second compression roller, the battery pole piece that has been suppressed is under the traction of second drive roll and second compression roller, by the winding mechanism rolling behind second tension roller, the driven roller of crossing of second, second floating roll, second drive roll and second compression roller.
The utility model adopts the means of arranging the splitting mechanism between the unreeling mechanism and the roller press, firstly, the longitudinal uncoated part of the battery pole piece is split by the splitting mechanism, and then the battery pole piece enters the roller press for rolling, thus, the pressure of the roller press can be well released because the longitudinal uncoated part of the battery pole piece is pre-split, and the crease is not easy to generate on the longitudinal uncoated part; in addition, the deep wrinkle removing devices are respectively arranged in front of or behind the roller press or in front of and behind the roller press, so that the force can be further applied to the battery pole piece entering the roller press or exiting the roller press, even if a small amount of wrinkles exist on the longitudinal uncoated part of the battery pole piece, the wrinkles can be further removed through the deep wrinkle removing devices, and the longitudinal uncoated part of the battery pole piece is ensured to be free of wrinkles.
Drawings
Fig. 1 is a schematic side view of an embodiment of the present invention.
Figure 2 is a schematic top view of the slitting assembly of figure 1.
Fig. 3 is a schematic view of the structure of fig. 2 from another perspective.
Fig. 4 is a schematic top view of the battery electrode plate of the present invention.
Detailed Description
Referring to fig. 1 to 4, fig. 1 to 4 disclose a rolling system capable of preventing a battery pole piece from wrinkling, which includes an unwinding mechanism 1, a rolling press 2, a winding mechanism 3 and a splitting mechanism 4, the roller press 2 comprises a pair of upper and lower press rollers 21, the roller press 2 presses the battery pole piece 22, the battery pole piece 22 comprises a longitudinal coating part 221 and a longitudinal non-coating part 222 (the longitudinal coating part 221 and the longitudinal non-coating part 222 in the utility model refer to that when the coating machine coats the active material, the coating is carried out along the length direction of the base material (such as copper foil or aluminum foil) of the battery pole piece 22, the formed longitudinal coating part 221 and the longitudinal non-coating part 222 are in long strip shape, see fig. 4), the longitudinal direction coating portion 221 is coated with an active material, the longitudinal direction non-coating portion 222 is not coated with the active material, and the battery pole piece 22 is released from the releasing mechanism 1; the rolling mechanism 3 rolls the rolled battery pole piece 22, the splitting mechanism 4 is located between the rolling mechanism 1 and the rolling machine 2, the splitting mechanism 4 is provided with splitting cutters 422 with the number equal to that of the longitudinal uncoated parts 222 between two adjacent longitudinal coated parts 221, and the splitting cutters 422 cut the longitudinal uncoated parts of the battery pole piece 22 to form a plurality of narrow battery pole pieces. With the above structure, the longitudinal uncoated part of the battery pole piece 22 can be cut by the cutting mechanism 4, and then the cut battery pole piece 22 enters the roller press 2 for rolling, so that the longitudinal uncoated part of the battery pole piece 22 is cut in advance, the pressure of the roller press 2 on the battery pole piece 22 can be well released, and wrinkles are not easily generated on the longitudinal uncoated part of the battery pole piece 22.
Preferably, the splitting mechanism 4 includes a splitting machine frame 41 and a cutter module 42 (see fig. 2 and 3), the cutter module 42 is located on the splitting machine frame 41, the cutter module 42 includes a tool holder 421 and a splitting cutter 422 provided on the tool holder 421, the splitting cutter 422 is divided into an upper splitting cutter 4221 and a lower splitting cutter 4222, the upper splitting cutter 4221 and the lower splitting cutter 4222 are provided in pairs, and the upper splitting cutter 4221 and the lower splitting cutter 4222 rotate simultaneously to split the longitudinal uncoated part of the battery pole piece 22; adjusting rollers 4223 for adjusting the levelness of the battery pole piece 22 are respectively arranged at the front side and the rear side of the splitting machine frame 41, and a deviation correcting sensor 4224 is arranged on the splitting machine frame 41.
Preferably, the slitting mechanism 4 further comprises a dust removing mechanism 43, and the dust removing mechanism 43 removes dust on the battery pole piece 22; the dust removing mechanism 43 is a brush roller with bristles, and the dust removing mechanism 43 can remove dust on the battery pole piece 22.
Preferably, the splitting mechanism 4 further comprises an iron removing mechanism 44, and the iron removing mechanism 44 removes iron dust on the battery pole pieces 22 through a magnetic material.
Preferably, the utility model discloses still include first degree of depth wrinkle chasing device 5, first degree of depth wrinkle chasing device 5 is established cutting mechanism 4 with between the compression roller 21, first degree of depth wrinkle chasing device 5 includes first drive roller 51 to and with first drive roller 51 complex first compression roller 52, first floating roll 53 and first driven roller 54 of crossing, and first tension roller 55, the battery pole piece 22 of being cut under the traction of first drive roller 51 and first compression roller 52, go into between a pair of compression roller 21 through first floating roll 53, first driven roller 54 in proper order to and behind the first tension roller 55, set up first degree of depth wrinkle chasing device 5 and can further get rid of the remaining fold of the vertical uncoated portion of battery pole piece.
Preferably, the utility model discloses still include second degree of depth wrinkle chasing device 6, second degree of depth wrinkle chasing device 6 establishes between compression roller 21 and the winding mechanism 3, second degree of depth wrinkle chasing device 6 includes second tension roller 65, the second is driven to cross roller 64, second floating roll 63, second drive roll 61 in proper order to and with second drive roll 61 complex second compression roller 62, the battery pole piece 22 that has suppressed is under second drive roll 61 and second compression roller 62's traction, is rolled up by winding mechanism 3 behind second tension roller 65, the second is driven to cross roller 64, second floating roll 63, second drive roll 61 and second compression roller 62, set up second degree of depth wrinkle chasing device 6 and can further get rid of the remaining fold of the vertical uncoated portion of battery pole piece.
The first deep wrinkle-removing device 5 and the second deep wrinkle-removing device 6 can be arranged alternatively or simultaneously, and the arrangement is determined according to the pressing condition of the battery pole piece 22.

Claims (8)

1. A rolling system capable of preventing a battery pole piece from being wrinkled comprises an unreeling mechanism (1), a rolling machine (2) and a reeling mechanism (3), wherein the rolling machine (2) comprises a pair of upper and lower pressing rollers (21), the rolling machine (2) is used for pressing the battery pole piece (22), the battery pole piece (22) comprises a longitudinal coating part (221) and a longitudinal uncoated part (222), an active substance is coated on the longitudinal coating part (221), the active substance is not coated on the longitudinal uncoated part (222), and the battery pole piece (22) is unreeled from the unreeling mechanism (1); winding mechanism (3) batch by battery sheet (22) that the roll passed, its characterized in that: still include cutting mechanism (4), it is located to cut mechanism (4) between unwinding mechanism (1) and calender press (2), cut mechanism (4) have with between two adjacent vertical coating portions (221) vertical uncoated portion (222) quantity equal branch cutter (422), divide cutter (422) to cut the vertical uncoated portion of battery sheet (22), form a plurality of strip battery sheet.
2. The rolling system capable of preventing the wrinkling of the battery pole piece according to claim 1, wherein: the slitting mechanism (4) comprises a slitting machine frame (41) and a slitting cutter module (42), the slitting cutter module (42) is located on the slitting machine frame (41), the slitting cutter module (42) comprises a cutter frame (421) and a slitting cutter (422) arranged on the cutter frame (421), the slitting cutter (422) is divided into an upper slitting cutter (4221) and a lower slitting cutter (4222), and the upper slitting cutter (4221) and the lower slitting cutter (4222) are arranged in pairs.
3. The rolling system capable of preventing the wrinkling of the battery pole piece according to claim 2, wherein: the slitting mechanism (4) further comprises a dust removing mechanism (43), and the dust removing mechanism (43) removes dust on the battery pole piece (22).
4. The rolling system capable of preventing the wrinkling of the battery pole piece according to claim 3, wherein: the dust removing mechanism (43) is a brush roller with bristles.
5. The rolling system capable of preventing the wrinkles of the battery pole pieces according to claim 2, 3 or 4, wherein: the slitting mechanism (4) further comprises an iron removing mechanism (44), and the iron dust on the battery pole pieces (22) is removed through the magnetic materials by the iron removing mechanism (44).
6. The rolling system capable of preventing creasing of battery pole pieces according to any one of claims 1 to 4, wherein: the battery pole piece cutting machine is characterized by further comprising a first depth wrinkle removing device (5), wherein the first depth wrinkle removing device (5) is arranged between the splitting mechanism (4) and the compression rollers (21), the first depth wrinkle removing device (5) comprises a first driving roller (51), a first compression roller (52) matched with the first driving roller (51), a first floating roller (53), a first driven roller (54) and a first tension roller (55), and the cut battery pole piece (22) sequentially passes through the first floating roller (53), the first driven roller (54) and the first tension roller (55) and then enters a space between the pair of compression rollers (21) under the traction of the first driving roller (51) and the first compression roller (52).
7. The rolling system capable of preventing creasing of battery pole pieces according to any one of claims 1 to 4, wherein: the pressing device is characterized by further comprising a second depth wrinkle removing device (6), the second depth wrinkle removing device (6) is arranged between the pressing roller (21) and the rolling mechanism (3), the second depth wrinkle removing device (6) sequentially comprises a second tension roller (65), a second driven roller (64), a second floating roller (63), a second driving roller (61) and a second pressing roller (62) matched with the second driving roller (61), and the pressed battery pole piece (22) is rolled by the rolling mechanism (3) after passing through the second tension roller (65), the second driven roller (64), the second floating roller (63), the second driving roller (61) and the second pressing roller (62) under the traction of the second driving roller (61) and the second pressing roller (62).
8. The rolling system capable of preventing creasing of battery pole pieces according to any one of claims 1 to 4, wherein: the slitting machine is characterized by further comprising a first depth wrinkle removing device (5) and a second depth wrinkle removing device (6), wherein the first depth wrinkle removing device (5) is arranged between the slitting mechanism (4) and the compression rollers (21), the first depth wrinkle removing device (5) comprises a first driving roller (51), a first compression roller (52) matched with the first driving roller (51), a first floating roller (53), a first driven passing roller (54) and a first tension roller (55), and the slit battery pole piece (22) sequentially passes through the first floating roller (53), the first driven passing roller (54) and the first tension roller (55) and then enters between the pair of compression rollers (21) under the traction of the first driving roller (51) and the first compression roller (52); the second deep wrinkle removing device (6) is arranged between the pressing roller (21) and the winding mechanism (3), the second deep wrinkle removing device (6) sequentially comprises a second tension roller (65), a second driven roller (64), a second floating roller (63), a second driving roller (61) and a second pressing roller (62) matched with the second driving roller (61), and the pressed battery pole piece (22) is wound by the winding mechanism (3) after passing through the second tension roller (65), the second driven roller (64), the second floating roller (63), the second driving roller (61) and the second pressing roller (62) under the traction of the second driving roller (61) and the second pressing roller (62).
CN201920864778.5U 2019-06-11 2019-06-11 Rolling system capable of preventing battery pole piece from creasing Active CN209896172U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920864778.5U CN209896172U (en) 2019-06-11 2019-06-11 Rolling system capable of preventing battery pole piece from creasing

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Application Number Priority Date Filing Date Title
CN201920864778.5U CN209896172U (en) 2019-06-11 2019-06-11 Rolling system capable of preventing battery pole piece from creasing

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111916677A (en) * 2020-08-11 2020-11-10 梅州市量能新能源科技有限公司 Method and equipment for processing side wrinkles of pole piece belt
CN113078280A (en) * 2021-01-08 2021-07-06 骆驼集团新能源电池有限公司 Double-roller compaction equipment for battery pole piece and compaction method for battery pole piece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111916677A (en) * 2020-08-11 2020-11-10 梅州市量能新能源科技有限公司 Method and equipment for processing side wrinkles of pole piece belt
CN111916677B (en) * 2020-08-11 2021-11-12 梅州市量能新能源科技有限公司 Method and equipment for processing side wrinkles of pole piece belt
CN113078280A (en) * 2021-01-08 2021-07-06 骆驼集团新能源电池有限公司 Double-roller compaction equipment for battery pole piece and compaction method for battery pole piece

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