CN114985987B - Pole piece cutting method - Google Patents
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- CN114985987B CN114985987B CN202210923709.3A CN202210923709A CN114985987B CN 114985987 B CN114985987 B CN 114985987B CN 202210923709 A CN202210923709 A CN 202210923709A CN 114985987 B CN114985987 B CN 114985987B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011888 foil Substances 0.000 claims abstract description 61
- 239000002699 waste material Substances 0.000 claims description 46
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 7
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 101100008044 Caenorhabditis elegans cut-1 gene Proteins 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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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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- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
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- Laser Beam Processing (AREA)
Abstract
The invention provides a pole piece cutting method, which utilizes a laser head to cut foil to enable the foil to form a plurality of pole pieces, and the formed pole pieces are named as a 1 st pole piece, a 2 nd pole piece and a … … Nth pole piece from one end to the other end of the foil in sequence, wherein N is a positive integer, and the cutting method comprises the following steps: cutting the pole piece of the odd number; and cutting the pole piece at the even number position. The number of laser heads needed is M, M =2N. And cutting the foil by using a laser head so that a plurality of pole pieces are formed on one foil at the same time. The cutting mode is changed into 1 to 4 pole lugs, 1 to 6 pole lugs, 1 to 8 pole lugs and the like, one foil forms a plurality of pole pieces, and the capacity of the processing mode is increased by multiple times on the premise of not increasing equipment.
Description
Technical Field
The invention relates to the technical field of battery tab processing, in particular to a pole piece cutting method.
Background
In order to improve the internal resistance of the battery, the purpose of reducing the internal resistance of the battery is achieved by increasing the parallel connection number of the battery tabs in a tab cutting mode, and the current mainstream pole piece tab forming mode in the industry is a mode of cutting 1 (tab) by laser, namely, 1 pole piece is formed on one foil, and 2 tabs of 1 pole piece are formed by cutting. The mode efficiency of laser die cutting 1 out 2 can not meet the demand of higher and higher productivity, the bottleneck of the productivity needs to be made up by increasing the number of devices, and then the investment cost is increased. In the mode of laser die cutting 1 and 2, the foil has inherent loss due to the existence of waste edges in the processing process, and the inherent substrate scrap amount of a single battery is large in the process design, so that improvement is urgently needed.
Disclosure of Invention
The invention aims to provide a pole piece cutting method, which utilizes a laser head to cut foil to form a plurality of pole pieces on one foil, thereby reducing loss and improving the utilization rate of the foil.
In order to achieve the above purpose, the invention provides the following technical scheme:
a pole piece cutting method is characterized in that a foil is cut by a laser head to form a plurality of pole pieces by one piece of foil, the formed pole pieces are named as a 1 st pole piece, a 2 nd pole piece and a … … Nth pole piece from one end to the other end of the foil in sequence, N is a positive integer, and the cutting method comprises the following steps: cutting the pole piece of the odd number; and cutting the pole piece at the even number position.
Further, in the pole piece cutting method, the number of laser heads required to be used is M, and M =2N; and all the pole pieces at the odd number are cut simultaneously, and all the pole pieces at the even number are cut simultaneously.
Further, in the above-mentioned pole piece cutting method, the pole tabs of two adjacent pole pieces formed on one of the foils are arranged in a staggered manner.
Further, in the above pole piece cutting method, when N =3, the left side portion and the right side portion of the foil are cut first to form 2 pole pieces, and then the middle area of the foil is cut to form 1 pole piece.
Further, in the above pole piece cutting method, 3 pole pieces formed by the foil are sequentially named as a 1 st pole piece, a 2 nd pole piece and a 3 rd pole piece from left to right, the 1 st pole piece and the 3 rd pole piece are cut simultaneously, when the 1 st pole piece and the 3 rd pole piece are cut, waste materials generated by cutting a right pole lug of the 1 st pole piece are left on the foil, and waste materials generated by cutting a left pole lug of the 3 rd pole piece are left on the foil.
Further, in the above pole piece cutting method, when cutting the 2 nd pole piece, the waste material generated by cutting the right tab of the 1 st pole piece and the waste material generated by cutting the left tab of the 2 nd pole piece are simultaneously discharged; and simultaneously discharging waste materials generated by cutting the left tab of the 3 rd pole piece and waste materials generated by cutting the right tab of the 2 nd pole piece.
Further, in the above pole piece cutting method, the right tab of the 1 st pole piece and the left tab of the 2 nd pole piece are arranged in a staggered manner; and the left lug of the 3 rd pole piece and the right lug of the 2 nd pole piece are arranged in a staggered manner.
Further, in the pole piece cutting method, waste materials after pole piece forming are taken away in a belt negative pressure adsorption mode.
Further, in the pole piece cutting method, the shape of the pole lugs of the pole piece is isosceles trapezoid, the lower base of the isosceles trapezoid is connected with the pole piece, the width of the lower base of the isosceles trapezoid is 40mm, and the height of the pole lugs of the pole piece is 30mm.
Further, in the pole piece cutting method, all the laser heads for cutting the pole piece in the odd number are located at the same height, all the laser heads for cutting the pole piece in the even number are located at the same height, and the laser head for cutting the pole piece in the odd number and the laser head for cutting the pole piece in the even number are located at different heights.
The analysis shows that the invention discloses a pole piece cutting method, the cutting mode is changed into cutting modes of 1 to 4, 1 to 6, 1 to 8 and the like, and the capacity of the processing mode is increased by multiple times on the premise of not increasing equipment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic diagram of a laser die cutting 1 according to an embodiment of the present invention, showing 6.
Fig. 2 is a schematic view of the intermediate area waste of the embodiment of fig. 1 in the 6-out die cutting mode 1.
Fig. 3 shows the embodiment of fig. 1 with the die cut 1 having the waste in the middle area 6.
Fig. 4 is a schematic view of a laser die cutting 1 according to another embodiment of the present invention, showing 6.
Figure 5 is a schematic view of the embodiment of figure 4 with die cut 1 showing 6 the waste material in the middle area.
Description of reference numerals: 1 cutting a region; 2, pole pieces; 3, a laser head; 4, pole lugs; 5, waste material; 6, vacuum belt; 7, a tab; 8, a laser head; 9, a laser head; 10 through the rolls.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the invention, and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
One or more examples of the invention are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms "first," "second," and "third," etc. may be used interchangeably to distinguish one component from another, and are not intended to denote position or importance of the individual components.
As shown in fig. 1 to 5, according to an embodiment of the present invention, a pole piece cutting method is provided, in which a laser head (3, 8, 9) is used to cut a foil to form a plurality of pole pieces 2 from one foil, and the formed pole pieces are sequentially named as a 1 st pole piece, a 2 nd pole piece, and a … … nth pole piece from one end to the other end of the foil, where N is a positive integer. The cutting method comprises the following steps: cutting the pole piece of the odd number; and cutting the pole piece at the even number position. The cutting mode is changed into 1 to produce 4 tabs (4, 7), 1 to produce 6 tabs (4, 7), 1 to produce 8 tabs (4, 7) and the like, as shown in fig. 1, one foil can form 3 pole pieces 2, a cutting area 1 is arranged between two adjacent pole pieces 2, and the tabs (4, 7) are formed in the cutting area 1. A plurality of pole pieces 2 are formed by one foil, and the processing mode can increase the capacity by multiple times on the premise of not increasing equipment.
The number of the pole pieces 2 formed by one foil is N, N is a positive integer, the number of laser heads (3, 8 and 9) required to be used is M, and M =2N. The value of N is related to the width of the foil. Assuming that N is 2, i.e. one foil forms 2 pole pieces 2, the number of laser heads (3, 8, 9) needed is 4. Suppose N is 3, that is, one foil forms 3 pole pieces 2, the number of laser heads (3, 8, 9) needed to be used is 6, and so on.
The tabs (4, 7) of two adjacent pole pieces 2 formed on one foil may be arranged tangentially, as shown in fig. 2, the right tab 4 of one pole piece 2 being tangential to the left tab 7 of the other pole piece 2. 3 pole pieces 2 that the said foil formed are named 1 st pole piece 2, 2 nd pole piece 2 and 3 rd pole piece 2 from left to right in proper order, and 1 st pole piece 2 and 3 rd pole piece 2 cut simultaneously, and when cutting 1 st pole piece 2 and 3 rd pole piece 2, the waste material 5 that the right utmost point ear 4 of cutting 1 st pole piece 2 produced is stayed on the foil, and the waste material 5 that the left utmost point ear 7 of cutting 3 rd pole piece 2 produced is stayed on the foil. All laser heads 8 of cutting 1 st pole piece 2 and 3 rd pole piece 2 accomplish the processing back, let the waste material 5 that the right utmost point ear of cutting 1 st pole piece 2 produced and the waste material 5 that the left utmost point ear of cutting 3 rd pole piece 2 produced stay on the foil, when the laser head 9 during operation of cutting 2 nd pole piece 2, the waste material 5 of middle zone is wasted discharge, compare that laser cross cutting 1 goes out 2 and gives up 2 shape that the difference lies in waste material 5 this moment and has changed, can promote the productivity several times under the prerequisite of the same cutting speed, but solve middle waste material 5 of discharging and compare laser cross cutting 1 and go out 2 and have the difficulty.
Preferably, the tabs (4, 7) of two adjacent pole pieces 2 formed on one foil are arranged in a staggered manner, as shown in fig. 5. Assuming that N is 3, that is, one foil forms 3 pole pieces 2, the 3 pole pieces 2 formed by the foil are sequentially named as a 1 st pole piece 2, a 2 nd pole piece 2 and a 3 rd pole piece 2 from left to right, and a right tab 4 of the 1 st pole piece 2 and a left tab 7 of the 2 nd pole piece 2 are arranged in a staggered manner; the left pole ear of the 3 rd pole piece 2 and the right pole ear of the 2 nd pole piece 2 are arranged in a staggered mode. For the waste of saving the foil, optimize the laser cutting route, through letting utmost point ear (4, 7) dislocation's mode, inlay the type with utmost point ear (4, 7) in middle zone and arrange, the type is arranged with the left utmost point ear 7 of 2 of the right 4 of the 1 st pole piece 2 and the 2 nd pole piece 2 of the right utmost point ear 7 of promptly, the type is arranged with the right utmost point ear of 2 of the 3 rd pole piece 2 of the left utmost point ear of 3 rd pole piece 2, the foil width in the middle of this moment can directly halve, as shown in fig. 4 and 5, two foil in middle zone can save more than 50% under this kind of mode.
And all the pole pieces at the odd number are cut simultaneously, and all the pole pieces at the even number are cut simultaneously. And all laser heads of the odd-numbered pole piece are positioned at the same height, all laser heads of the even-numbered pole piece are positioned at the same height, and the laser heads of the odd-numbered pole piece and the laser heads of the even-numbered pole piece are positioned at different heights.
Preferably, taking N =3 as an example, 2 pole pieces 2 are formed by cutting the left side portion and the right side portion of the foil, and then 1 pole piece 2 is formed by cutting the middle area of the foil. All laser heads 8 for cutting the 1 st pole piece 2 and the 3 rd pole piece 2 are located at the same height (the position of the laser head 8 is fixed and cannot be adjusted), all laser heads 9 for cutting the 2 nd pole piece 2 are located at the same height (the position of the laser head 9 is fixed and cannot be adjusted), and the laser head 8 for cutting the 1 st pole piece 2 and the laser head 9 for cutting the 2 nd pole piece 2 are located at different heights. In the cutting mode of the die cutting machine 1, the waste materials 5 at two sides are connected into a whole after the cutting at the middle area, so that the waste materials 5 at the middle area cannot be synchronously discharged by the vacuum belt 6, as shown in fig. 2 and 3, a roller 10 on the equipment is shown in fig. 3. In order to solve the problem of discharging, the position of the laser head is adjusted, the laser head 9 in the middle (the laser head 9 for cutting the 2 nd pole piece 2) and other laser heads are positioned at different heights, the left side part and the right side part of the foil are firstly cut to form 2 pole pieces 2, and then the middle area of the foil is cut to form 1 pole piece 2, as shown in fig. 4.
When N =4, from one end to the other end of the foil, the formed multiple pole pieces are named as a 1 st pole piece, a 2 nd pole piece, a 3 rd pole piece and a 4 th pole piece in sequence, and 8 laser heads are needed in total. The 1 st pole piece and the 3 rd pole piece are cut firstly to form 2 pole pieces 2, and then the 2 nd pole piece and the 4 th pole piece are cut to form 2 pole pieces 2. All the laser heads for cutting the 1 st pole piece and the 3 rd pole piece are located at the same height (the position of the laser heads is fixed and cannot be adjusted), all the laser heads for cutting the 2 nd pole piece and the 4 th pole piece are located at the same height (the position of the laser heads is fixed and cannot be adjusted), and the laser head for cutting the 1 st pole piece and the laser head for cutting the 2 nd pole piece are located at different heights, namely, the cutting mode of 1-8 die cutting is adopted.
And so on.
As shown in fig. 5, 3 pole pieces 2 formed by the foil are named as a 1 st pole piece 2, a 2 nd pole piece 2 and a 3 rd pole piece 2 from left to right in sequence, the 1 st pole piece 2 and the 3 rd pole piece 2 are cut simultaneously, when the 1 st pole piece 2 and the 3 rd pole piece 2 are cut, a waste material 5 generated by cutting a right tab 4 of the 1 st pole piece 2 is left on the foil, and a waste material 5 generated by cutting a left tab 7 of the 3 rd pole piece 2 is left on the foil. After all the laser heads 8 for cutting the 1 st pole piece 2 and the 3 rd pole piece 2 are processed, the waste 5 generated by cutting the right pole lug 4 of the 1 st pole piece 2 and the waste 5 generated by cutting the left pole lug 7 of the 3 rd pole piece 2 are left on the foil. Through the staggered mode, when a laser head 9 for cutting the 2 nd pole piece 2 works, the shape of the waste 5 (between the right lug 4 of one pole piece 2 and the left lug 7 of the other pole piece 2) in the middle area is changed and becomes smaller compared with the tangent time of the lugs (4 and 7), and the conventional waste discharge mode can meet the requirement. By the arrangement mode, the capacity can be improved by multiple times on the premise of the same cutting speed, and meanwhile, the problem that the waste material is difficult to discharge in the middle can be solved.
When the 2 nd pole piece 2 is cut, the waste 5 generated by cutting the right tab 4 of the 1 st pole piece 2 and the waste 5 generated by cutting the left tab 7 of the 2 nd pole piece 2 are simultaneously discharged; the waste 5 that the left utmost point ear of cutting 3 rd pole piece 2 produced simultaneously discharges with the waste 5 that the right utmost point ear of cutting 2 nd pole piece 2 produced. The problem of middle row of waste material 5 difficulty is solved.
Preferably, the waste 5 after the pole piece 2 is formed is taken away by a belt negative pressure adsorption mode.
Preferably, the cross section of the pole lugs (4, 7) of the pole piece 2 is isosceles trapezoid, the lower base of the isosceles trapezoid is connected with the pole piece, the width of the lower base of the isosceles trapezoid is 40mm, and the height of the pole lugs (4, 7) of the pole piece 2 is 30mm.
A specific example is described below, taking the 17M pole piece as an example.
1) Output per minute comparison
The length of the battery core pole piece 2 for test is 17000mm, the width of the tabs (4, 7) is 40mm, the height of the tabs (4, 7) is 30mm, the number of the tabs (4, 7) is 50,
the laser die cutting method of the invention is adopted to cut in a mode of 1 output 6, the cutting speed is 50M/Min, the yield is 98 percent,
the laser die cutting method adopts a mode of cutting by 1 output 2 in the prior art, the cutting speed is 70M/Min, and the yield is 99.5 percent.
In the prior art, the laser die cutting 1 has 2 modes,
yield per minute =2 × (70 ÷ 17) × (99.5% =8.
The laser die cutting 1 of the present invention takes 6 modes,
yield per minute =6 × (50 ÷/17) × 98% =17.
(17-8) ÷ 8 × 100% = 112.5%, namely the cutting efficiency is improved by 112.5% compared with that of the prior art by using the 1-out-6 laser die cutting mode of the invention.
2) Fixed loss contrast
The length of the test battery core pole piece 2 is 17000mm, the width of the lugs (4 and 7) is 40mm, the height of the lugs (4 and 7) is 30mm, the number of the lugs (4 and 7) is 50, and the width of the pole piece 2 is 190mm
By adopting the cutting mode of cutting 1 out 6 by laser die cutting of the invention, under the condition that the lugs (4 and 7) are tangent,
area of scrap S Waste material =[(17000-40×50)×30]×6
Total area S of pole piece Total area of =17000×(190+30)×6
The scrap ratio S Waste material /S Total area of =12.03%
The laser die cutting 1 is carried out in a 6 cutting mode, under the embedding condition of the lugs (4, 7),
area of scrap S Waste material = [(17000-40×50)×30]×2+[17000-(40×50×2)]×30×2
Total area S of pole piece Total area of =17000×(190+30)×6
The scrap ratio S Waste material /S Total area of =7.49%
By adjusting the cutting mode, the fixed loss of the single pole piece 2 is reduced to 7.49% from 12.03%, and the fixed loss of the single pole piece 2 is reduced by 4.54%.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the foil is cut by laser heads (3, 8, 9) so that a plurality of pole pieces 2 are formed simultaneously from one foil. The cutting mode is changed into 1 to produce 4 pole lugs (4, 7), 1 to produce 6 pole lugs (4, 7), 1 to produce 8 pole lugs (4, 7) and the like, a plurality of pole pieces 2 are formed by one foil, and the capacity is increased by multiple times by the processing mode on the premise of not increasing equipment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A pole piece cutting method is characterized in that a foil is cut by a laser head to form a plurality of pole pieces by one foil,
from one end to the other end of the foil, the formed multiple pole pieces are named as a 1 st pole piece, a 2 nd pole piece and a … … Nth pole piece in sequence, N is a positive integer,
the cutting method comprises the following steps:
the number of laser heads needed is M, M =2N,
cutting an odd-number pole piece, wherein the cut odd-number pole piece is provided with a left pole lug and a right pole lug;
all the pole pieces of the odd number are cut at the same time,
cutting the pole piece at the even number position, wherein the cut pole piece at the even number position is provided with a left pole lug and a right pole lug;
all the pole pieces at the even number position are cut at the same time,
the right pole ear of the odd pole piece and the left pole ear of the even pole piece are arranged in a staggered and embedded mode,
the right pole ear of the even pole piece and the left pole ear of the odd pole piece are arranged in a staggered and embedded way,
all the laser heads cutting the pole piece of the odd number are positioned at the same height,
all the laser heads for cutting the pole piece at the even number are positioned at the same height,
and the laser head for cutting the pole piece in the odd number position and the laser head for cutting the pole piece in the even number position are positioned at different heights.
2. The pole piece cutting method according to claim 1, wherein the tabs of two adjacent pole pieces formed on one foil are arranged in a staggered manner.
3. The pole piece cutting method according to claim 1, wherein when N =3, the left side part and the right side part of the foil are cut first to form 2 pole pieces,
and cutting the middle area of the foil to form 1 pole piece.
4. The pole piece cutting method according to claim 3,
3 pole pieces formed by the foil are sequentially named as a 1 st pole piece, a 2 nd pole piece and a 3 rd pole piece from left to right,
the 1 st pole piece and the 3 rd pole piece are cut simultaneously,
when cutting the 1 st pole piece with the 3 rd pole piece, the cutting the waste material that the right utmost point ear of the 1 st pole piece produced is stayed on the foil, and the cutting the waste material that the left utmost point ear of the 3 rd pole piece produced is stayed on the foil.
5. The pole piece cutting method according to claim 4, wherein, when the 2 nd pole piece is cut,
simultaneously discharging waste materials generated by cutting the right tab of the 1 st pole piece and waste materials generated by cutting the left tab of the 2 nd pole piece;
and simultaneously discharging waste materials generated by cutting the left tab of the 3 rd pole piece and waste materials generated by cutting the right tab of the 2 nd pole piece.
6. The pole piece cutting method according to claim 4,
the right tab of the 1 st pole piece and the left tab of the 2 nd pole piece are arranged in a staggered manner;
and the left lug of the 3 rd pole piece and the right lug of the 2 nd pole piece are arranged in a staggered manner.
7. The pole piece cutting method according to claim 1,
the waste material after the pole piece is formed is taken away through a belt negative pressure adsorption mode.
8. The pole piece cutting method according to claim 1,
the cross section shape of the utmost point ear of pole piece is isosceles trapezoid, and isosceles trapezoid's the bottom is connected with the pole piece, and the width that goes to the bottom of isosceles trapezoid is 40mm, and the height of the utmost point ear of pole piece is 30mm.
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| CN106601982A (en) * | 2016-12-08 | 2017-04-26 | 深圳市海目星激光科技有限公司 | Electrode slice and cutting method for electrode slice |
| CN208173696U (en) * | 2018-05-31 | 2018-11-30 | 宁德时代新能源科技股份有限公司 | Pole piece process equipment |
| CN110718675A (en) * | 2019-10-25 | 2020-01-21 | 骆驼集团武汉光谷研发中心有限公司 | Method for processing tab |
| CN112828475A (en) * | 2020-12-31 | 2021-05-25 | 深圳吉阳智能科技有限公司 | Laser die cutting and slitting integrated machine |
| CN214350332U (en) * | 2020-12-31 | 2021-10-08 | 深圳吉阳智能科技有限公司 | Laser die cutting and slitting integrated machine |
| CN216097021U (en) * | 2021-09-03 | 2022-03-22 | 广东海中新能源设备股份有限公司 | Pole piece laser cutting and rolling integrated equipment |
| CN113896017A (en) * | 2021-09-10 | 2022-01-07 | 厦门海辰新能源科技有限公司 | Pole piece forming equipment and pole piece forming process |
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Address after: No. 1, Chuneng Avenue, Lingang Economic Zone, Xiaogan City, Hubei Province, 430051 Patentee after: CORNEX NEW ENERGY Co.,Ltd. Address before: 430051 No. 1, Longyang Third Road, Hanyang District, Wuhan City, Hubei Province Patentee before: CORNEX NEW ENERGY Co.,Ltd. |