CN110000852A - Hole-forming device, micropore collector foil and preparation method thereof - Google Patents
Hole-forming device, micropore collector foil and preparation method thereof Download PDFInfo
- Publication number
- CN110000852A CN110000852A CN201910270404.5A CN201910270404A CN110000852A CN 110000852 A CN110000852 A CN 110000852A CN 201910270404 A CN201910270404 A CN 201910270404A CN 110000852 A CN110000852 A CN 110000852A
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- Prior art keywords
- pillar
- roller
- hole
- protrusion
- forming device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/16—Perforating by tool or tools of the drill type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
-
- 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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- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The present invention relates to a kind of hole-forming device, micropore collector foil and preparation method thereof, which includes the first roller group, and the first roller group includes the first roller and the second roller.First roller is equipped with the first pillar, and the end face of the first pillar is equipped with protrusion, and protrusion and the edge of the first pillar have interval, so as to form the first press keeping section between the edge and protrusion of the first pillar；Second roller is oppositely arranged with the first roller, and the second roller is equipped with the second pillar, and the end face of the second pillar is equipped with the recess portion that can accommodate protrusion, forms the second press keeping section between the upper edge of recess portion and the edge of the second pillar；Second press keeping section can be laminated with the first press keeping section.Above-mentioned hole-forming device can to the various collector foils such as aluminium foil, copper foil and other need punching tool carry out perforation processing.Using the equal impulse- free robustness in two sides around the aperture of the through hole of hole-forming device formation, punch more smooth.
Description
Technical field
The present invention relates to mechanical equipment technical fields, more particularly to a kind of hole-forming device, micropore collector foil and its system
Preparation Method.
Background technique
Hole-forming device is the device for pore-forming, is widely used, and is also widely used in system in field of batteries technical field
Standby micropore collector.Existing micropore collector hole knockout has chemical attack punching, electrolytic corrosion punching, laser boring, machine
Tool processing punching etc..Wherein chemical attack punching, the perforating efficiency of electrolytic corrosion punching are slow, and pore-forming control is difficult, and at porose area
Domain be corroded collector recycling difficulty it is big.The cost of laser boring is excessively high.And the mode of mechanical punching has perforating efficiency fast,
The advantages such as pore-forming control is stablized, and processing cost is low.However current hole knockout directly strikes out collector using impact head
Hole, the problem for be easy to causeing the hole back side of collector jagged can not form the carrot-free through hole in two sides around aperture.
Summary of the invention
Based on this, it is necessary to provide a kind of flatness that can be improved punching, make two sides around punched aperture equal
Carrot-free hole-forming device.
A kind of hole-forming device, including the first roller group；The first roller group includes:
First roller, is equipped with the first pillar, and the end face of first pillar is equipped with protrusion, the protrusion and described first convex
The edge of column has interval, so as to form the first press keeping section between the edge and the protrusion of first pillar；
Second roller is oppositely arranged with first roller, and second roller is equipped with the second pillar, second pillar
End face be equipped with and can accommodate the recess portion of the protrusion, the is formed between the upper edge of the recess portion and the edge of second pillar
Two press keeping sections；Second press keeping section can be laminated with first press keeping section.
Above-mentioned hole-forming device can to the various collector foils such as aluminium foil, copper foil and other need punching tool carry out perforation processing.
When work, by collector foil and other need punching tool to be placed between the first roller and the second roller, be arranged in the first roller
On the first pillar and the second pillar for being arranged on the second roller cooperate, it is convex during protrusion and recesses fit
Portion acts on collector foil, promote collector foil correspond to protrusion position formed hole, at the same time by the second press keeping section with
First press keeping section is laminated, and promotes the collector between the first roller and the second roller eventually by both direction pressure holding
Foil forms through hole.Compared to hole knockout of the impact head directly to collector punching press pore-forming is used at present, filled using the pore-forming
Set the equal impulse- free robustness in two sides around the aperture for the through hole to be formed, that is to say, that not extra burr remains on collector foil,
The region that protrusion is corresponded on collector foil is detached from from original collector foil, so not only realizes the punching of collector foil
And also really significantly reduce the weight of collector foil.
The height of the protrusion is less than the depth of the recess portion in one of the embodiments,.
The protrusion is hemispherical in one of the embodiments,.
The protrusion and the recess portion are hemispherical in one of the embodiments,；The corresponding radius of a ball in the protrusion
The radius of a ball corresponding greater than the recess portion.
First roller is additionally provided with third pillar in one of the embodiments, and second roller is additionally provided with the 4th
The end face of pillar, the third pillar and the 4th pillar is plane；And the third pillar and the 4th pillar energy
Enough it is laminated.
The hole-forming device further includes the second roller group in one of the embodiments, and the second roller group includes the
Three rollers and the 4th roller, the third roll are equipped with third pillar, and the 4th roller is additionally provided with the 4th pillar, the third
The end face of pillar and the 4th pillar is plane；And the third pillar and the 4th pillar can be laminated.
The sum of the height of the third pillar and the 4th pillar that are oppositely arranged in one of the embodiments, is less than
The sum of the height of first pillar and second pillar that are oppositely arranged.
First press keeping section and second press keeping section are ring-type in one of the embodiments, first pressure holding
The ring width of portion and second press keeping section is equal.
It there is a need to provide a kind of preparation method of micropore collector foil, using hole-forming device pair described in any of the above embodiments
The punching of collector foil is made.
It there is a need to provide a kind of micropore collector foil, be made using the preparation method of above-mentioned micropore collector foil.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the hole-forming device of an embodiment；
Fig. 2 is the first pillar of hole-forming device and the enlarged structure schematic diagram of the second pillar shown in Fig. 1；
Fig. 3 is the bottom view of the first pillar and protrusion shown in Fig. 2；
Fig. 4 is the top view of the second pillar shown in Fig. 2；
Fig. 5 is the electronic photo of micropore aluminium foil made from embodiment 1；
Fig. 6 is the cycle performance figure of battery core made from embodiment 1 and comparative example 1.
Specific embodiment
To facilitate the understanding of the present invention, below will to invention is more fully described, and give it is of the invention compared with
Good embodiment.But the invention can be realized in many different forms, however it is not limited to embodiment described herein.Phase
Instead, purpose of providing these embodiments is makes the disclosure of the present invention more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
Referring to Fig. 1, an embodiment of the present invention provides a kind of hole-forming device 10.The hole-forming device 10 includes at least the
One roller group 100.It is understood that the hole-forming device 10 may also include the second roller group 200, emptying roller 300 and material receiving roller 400.
Wherein, the first roller group 100 includes the first roller 110 and the second roller 120.
Fig. 1 and Fig. 2 is please referred to, the first roller 110 is equipped with the first pillar 111.The end face of first pillar 111 is equipped with protrusion
112, the edge of protrusion 112 and the first pillar 111 has interval, so as to be formed between the edge and protrusion 112 of the first pillar 111
First press keeping section 113.
Fig. 1 and Fig. 2 is please referred to, the second roller 120 is oppositely arranged with the first roller 110.It is convex that second roller 120 is equipped with second
Column 121, the end face of the second pillar 121 are equipped with the recess portion 122 that can accommodate protrusion 112, upper edge and the second pillar of recess portion 122
The second press keeping section 123 is formed between 121 edge.Second press keeping section 123 can be laminated with the first press keeping section 113.
Above-mentioned hole-forming device 10 can to the various collector foils 20 such as aluminium foil, copper foil and other need punching tool carry out punching plus
Work.When work, by collector foil 20 and other need punching tool to be placed between the first roller 110 and the second roller 120, be arranged
The first pillar 111 on the first roller 110 cooperates with the second pillar 121 being arranged on the second roller 120, in protrusion
During 112 cooperate with recess portion 122, protrusion 112 is acted on collector foil 20, promotes the corresponding protrusion 112 of collector foil 20
Position form hole, be laminated with the first press keeping section 113 by the second press keeping section 123 at the same time, eventually by two sides
The collector foil 20 between the first roller 110 and the second roller 120 is promoted to form through hole to pressure holding.Compared to adopting at present
Hole knockout with impact head directly to collector punching press pore-forming, using the hole-forming device 10 formed through hole aperture around
The equal impulse- free robustness in two sides, i.e. not extra burr remain on collector foil 20, and the region of protrusion 112 is corresponded on collector foil 20
It is detached from from original collector foil 20, so not only realizes the punching of collector foil 20 and also really significantly reduces
The weight of collector foil 20.
The hole-forming device 10 is compared to conventional chemical attack and laser punching, and manufacture craft is simple, high production efficiency,
Production cost is low, and aluminium foil recovery efficiency is high.
It is relatively conventional not have when the micropore collector foil 20 that the punching of above-mentioned hole-forming device 10 is formed is applied in lithium ion battery
There is the collector foil 20 of punching, the volume accounting and quality of collector are reduced under the premise of condition of equivalent thickness, it can be convenient for increase
The coated weight of positive active material, and then improve the energy density of battery core.And the micropore collector increases electrolyte storage sky
Between, improve the water retainability of anode pole piece；In addition, increase positive electrode material layer and plus plate current-collecting body aluminium foil contact area and
Adhesion strength increases the specific surface that contacts with aluminium foil of active material, reduces connecing for positive electrode active materials and plus plate current-collecting body aluminium foil
Internal resistance is touched, to promote battery high rate performance.
It is understood that the shape of the first press keeping section 113 and the second press keeping section 123 is ring-type.Specifically, the first press keeping section 113
It is equal with the width (i.e. ring width) of the second press keeping section 123.
Referring to figure 3. and Fig. 4, specifically in the present embodiment, the shape of the first pillar 111 and the second pillar 121 is circle
Cylindricality, it is appreciated that the shape of the first pillar 111 and the second pillar 121 is without being limited thereto, can be with square column type etc..
Please continue to refer to Fig. 1 and Fig. 2, the internal diameter phase of the outer diameter and recess portion 122 of protrusion 112 in one of the embodiments,
Deng can so make the position of the corresponding protrusion 112 of collector foil 20 preferably form through hole.
Further, the height of protrusion 112 is less than the depth of recess portion 122.In this way, recess portion 122 can be accommodated through hole site
Fragment, and then recycle.It should be noted that the height of protrusion 112 refers to top and the first press keeping section of protrusion 112
Vertical range between 113, the depth of recess portion 122 refer between the lowest part of recess portion 122 and the second press keeping section 123 it is vertical away from
From.
Further, the outer diameter of the protrusion 112 of the first pillar 111 is 0.1mm~1mm.So outer diameter of control protrusion 112
Adjust the internal diameter of through hole.It is understood that the spacing between two neighboring pillar on the first roller 110 and the second roller 120 is
0.1mm~2mm.
Further, protrusion 112 is hemispherical.In view of the cooperation and separation of protrusion 112 and recess portion 122 are in the first roller
Cylinder 110 and the second roller 120 carry out during rotating, therefore protrusion 112 are arranged hemispherical, can preferably promote convex
The separation in portion 112 and recess portion 122.Specifically, protrusion 112 and recess portion 122 are hemispherical.More specifically, protrusion 112 is corresponding
The radius of a ball is greater than the corresponding radius of a ball of recess portion 122.
It is understood that the quantity of the first pillar 111 and the second pillar 121 on same roller be it is multiple, correspondingly, protrusion
112 and the quantity of recess portion 122 be also multiple.For example, the first pillar 111 can be arranged to along the axially spaced-apart of the first roller 110 it is more
Row's arrangement, correspondingly, the second pillar 121 is arranged to multiple rows of arrangement along the axially spaced-apart of the second roller 120.
It is understood that, in addition to being equipped with the first pillar 111, it can be also equipped with the second pillar 121 on same first roller 110,
Above-mentioned recess portion 122 also is provided on second pillar 121；Correspondingly, on the second roller 120, in addition to being equipped with the second pillar 121, also
It can be equipped with the first pillar 111, also be provided with raised part 112 on first pillar 111.
Hole-forming device 10 further includes the second roller group 200 in one of the embodiments,.Second roller group 200 includes the
Three rollers 210 and the 4th roller 220, third roll 210 are equipped with third pillar 211, and the 4th roller 220 is additionally provided with the 4th pillar
221, the end face of third pillar 211 and the 4th pillar 221 is plane；And third pillar 211 and the 4th pillar 221 can be mutual
Pressing.It is so used cooperatively by the first roller group 100 and the second roller group 200, can also be formed and be run through on collector foil 20
Hole and non-through hole.
The first roller 110 is additionally provided with third pillar 211 in one of the embodiments, and the second roller 120 is additionally provided with the 4th
The end face of pillar 221, third pillar 211 and the 4th pillar 221 is plane；And third pillar 211 and the 4th pillar 221 can
It is laminated.So being laminated by third pillar 211 and the 4th pillar 221, so as to be located at the first roller 110 and second
The position that two surfaces of the collector foil 20 between roller 120 are opposite is respectively formed corresponding non-through hole.That is, the first roller
Cylinder group 100 can be formed simultaneously through hole and non-through hole.
The sum of height of the first pillar 111 and the second pillar 121 that are oppositely arranged in one of the embodiments, is equal to collection
Fluid foil etc. needs the thickness of punching tool.So work when, by between the first roller 110 and the ontology of the second roller 120 away from
From being set as needing the thickness of punching tool, so that the ontology of the first roller 110 and the second roller 120 just clamps and need to punch work
Part.And collector foil etc. needs punching tool that the position of the first pillar 111 and the second pillar 121 is being arranged by 111 He of the first pillar
Second pillar, 121 punching, to form through hole.
Specifically, in one embodiment, the height of the first pillar 111 and the second pillar 121 that are oppositely arranged is equal.
In a specific example, the sum of height of the first pillar 111 and the second pillar 121 that are oppositely arranged is 10 μm~50
μm.It is understood that the sum of the height of the first pillar 111 and the second pillar 121 that are oppositely arranged is equivalent to the first roller 110 and second
The roll-in depth of roller 120.
The sum of height of the third pillar 211 and the 4th pillar 221 that are oppositely arranged in one of the embodiments, is less than collection
Fluid foil etc. needs the thickness of punching tool.So work when, by between third roll 210 and the ontology of the 4th roller 220 away from
From being set as needing the thickness of punching tool, so that the ontology of third roll 210 and the 4th roller 220 just clamps and need to punch work
Part.And collector foil etc. needs punching tool in the position of setting third pillar 211 and the 4th pillar 221 by 211 He of third pillar
4th pillar, 221 punching press, to form non-through hole.
The sum of height of the third pillar 211 and the 4th pillar 221 that are oppositely arranged in one of the embodiments, is less than phase
The sum of the height of the first pillar 111 and the second pillar 121 to setting.Such as when convex containing these two pair simultaneously in same roller group
When column, so to realize the punching of through hole and the punching press of non-through hole simultaneously in a roller group.
Specifically, in one embodiment, the height of the third pillar 211 and the 4th pillar 221 that are oppositely arranged is equal.
It is understood that the quantity of third pillar 211 and the 4th pillar 221 is multiple.For example, third pillar 211 can be along third
The axially spaced-apart of roller 210 is arranged to multiple rows of arrangement, and correspondingly, the 4th pillar 221 is arranged along the axially spaced-apart of the 4th roller 220
At multiple rows of arrangement.Further, the diameter of the third pillar 211 in the second roller group 200 and the 4th pillar 221 be 0.1mm~
1mm, spacing are 0.1mm~2mm.
Above-mentioned hole-forming device 10 further includes emptying roller 300 in one of the embodiments, and emptying roller 300 is used for afflux
Body foil 20 etc. needs punching tool to unreel.First roller group 100 and the second roller group 200 are set to the downstream of emptying roller 300.Further
The sequencing of ground, the first roller group 100 and the second roller group 200 is unlimited, in this embodiment, the first roller group 100
Positioned at the downstream of the second roller group 200, i.e., between the second roller group 200 and material receiving roller 400.
Above-mentioned hole-forming device 10 further includes material receiving roller 400 in one of the embodiments, and material receiving roller 400 is set to the first roller
The downstream of cylinder group 100 and the second roller group 200, needs punching tool to wind with the collector foil 20 etc. for will have openning hole.
The punching stability of punching tool is needed in order to improve collector foil 20 etc., generally, emptying roller 300, material receiving roller 400
And first roller group 100 be arranged in same level；Certainly, in the presence of the second roller group 200, emptying roller 300, the second roller
Cylinder group 200, material receiving roller 400 and the first roller group 100 are arranged in same level, so that collector foil 20 is in emptying roller 300
State is sprawled in level between receiving volume.
Specifically, the first roller 110 and the second roller 120 are to be oppositely arranged up and down.Third roll 210 and the 4th roller
220 be to be oppositely arranged up and down.
The present invention also provides a kind of preparation methods of micropore collector foil, use above-mentioned hole-forming device to collector foil
Punching is carried out to be made.The hole for wherein beat to collector foil includes through hole and non-through hole.Correspondingly, one is additionally provided
Micropore collector foil made from the preparation method using above-mentioned micropore collector foil of embodiment.
The following are specific embodiments.
Using hole-forming device as shown in Figure 1, the aluminium foil with a thickness of 16 μm is punched, first uses the second roller group
200 form non-through hole, are then formed through hole to the aluminium foil for being formed through hole using the first roller group 100 again, are made
Micropore aluminium foil it is as shown in Figure 5.In the present embodiment, through hole and non-through hole have coincidence in some locations, some
Position is staggered completely.
Specifically, punching press: the third pillar 211 in the second roller group 200 is first carried out to aluminium foil using the second roller group 200
Diameter with the 4th pillar 221 is 0.5mm, spacing 0.5mm；Roll-in is carried out to aluminium foil by the second roller group 200, roll-in is deep
Degree is 6 μm (height of third pillar 211 and the 4th pillar 221 is 3 μm), so that aluminium foil surface is distributed 3 μm of hole depth, aperture
The round non-through hole of 0.5mm, pitch of holes 0.5mm.Then stamped aluminium foil is punched out using the first roller group 100,
Equally using the first pillar 111 and the second pillar 121 to roller mode, in the first roller group 100 to aluminium foil when punching is spacing
1mm, diameter are the cylindrical protrusions of 0.25mm, carry out roll-in to roller by the first roller 110 and the second roller 120, roll-in is deep
16 μm of degree (the sum of height of the first pillar 111 and the second pillar 121 is 16 μm, respectively 8 μm), so that aluminium foil surface distribution hole
The round through hole of diameter 0.25mm, pitch of holes 1mm.
Using 1 gained aluminium foil of embodiment as plus plate current-collecting body collocation ternary material (LNCM523), artificial graphite and 16+4
8688190-15Ah battery core is made in+4 ceramic diaphragms, and (8688190-15Ah battery core represents the capacity of 8.6mm thickness 88mm wide 190mm long
For the battery core of 15Ah), comparative example 1 is conventional 16 μm of aluminium foils as plus plate current-collecting body and 8688190-15Ah battery core is made, and obtains
Cycle performance figure is as shown in fig. 6, test data is summarized as follows shown in table:
The testing standard of test item involved in table 1 is as follows:
Active material steel sheet peeling off force test method: take pole piece trimming at 20mm wide 150mm long, pressure-sensitive 3M-VHB double-sided adhesive
It is attached to pole piece active material surface, another side pastes on stainless steel, and stainless steel plate and collector are fixed on tension tester
On two fixtures of equipment, then with the speed of 50mm/min, the load of 50N carries out 180 degree peel test, when aluminium collector quilt
The average value of the power detected when being completely exfoliated is exactly peeling force.
Protect liquid coefficient testing method: the capacity after measuring battery core and protecting liquid measure divided by battery core is to protect liquid coefficient；
Gram volume plays: battery core capacity is divided by battery core active material gross mass up to gram volume performance；
Energy density: battery core capacity is multiplied by battery core platform voltage divided by battery core quality；
Multiplying power discharging: specific test method is referring to GB/T31486-2015 6.3.6；
Multiplying power charging: specific test method is referring to GB/T31486-2015 6.3.7；
Cycle performance: 25 DEG C, 1C charge and discharge, wherein charge-carrying belt constant pressure, when being recycled to 500 weeks, stops test.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of hole-forming device, which is characterized in that including the first roller group；The first roller group includes:
First roller, is equipped with the first pillar, and the end face of first pillar is equipped with protrusion, the protrusion and first pillar
Edge has interval, so as to form the first press keeping section between the edge and the protrusion of first pillar；
Second roller is oppositely arranged with first roller, and second roller is equipped with the second pillar, the end of second pillar
Face is equipped with the recess portion that can accommodate the protrusion, and the second pressure is formed between the upper edge of the recess portion and the edge of second pillar
Hold portion；Second press keeping section can be laminated with first press keeping section.
2. hole-forming device as described in claim 1, which is characterized in that the height of the protrusion is less than the depth of the recess portion.
3. hole-forming device as described in claim 1, which is characterized in that the protrusion is hemispherical.
4. hole-forming device as claimed in claim 3, which is characterized in that the protrusion and the recess portion are hemispherical；It is described
The corresponding radius of a ball in protrusion is greater than the corresponding radius of a ball of the recess portion.
5. hole-forming device as described in claim 1, which is characterized in that first roller is additionally provided with third pillar, and described
Two rollers are additionally provided with the 4th pillar, and the end face of the third pillar and the 4th pillar is plane；And the third pillar
It can be laminated with the 4th pillar.
6. hole-forming device as described in claim 1, which is characterized in that the hole-forming device further includes the second roller group, described
Second roller group includes third roll and the 4th roller, and the third roll is equipped with third pillar, and the 4th roller is additionally provided with
The end face of 4th pillar, the third pillar and the 4th pillar is plane；And the third pillar and described 4th convex
Column can be laminated.
7. such as hole-forming device described in claim 5 or 6, which is characterized in that the third pillar that is oppositely arranged and described the
The sum of height of four pillars is less than the sum of the height of first pillar and second pillar that are oppositely arranged.
8. hole-forming device as described in any one of claims 1 to 6, which is characterized in that first press keeping section and described second
For press keeping section to be cyclic annular, the ring width of first press keeping section and second press keeping section is equal.
9. a kind of preparation method of micropore collector foil, which is characterized in that using it is as described in any one of claims 1 to 8 at
Aperture apparatus punches collector foil and is made.
10. a kind of micropore collector foil, which is characterized in that using the preparation side of micropore collector foil as claimed in claim 9
Method is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270404.5A CN110000852A (en) | 2019-04-04 | 2019-04-04 | Hole-forming device, micropore collector foil and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270404.5A CN110000852A (en) | 2019-04-04 | 2019-04-04 | Hole-forming device, micropore collector foil and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110000852A true CN110000852A (en) | 2019-07-12 |
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ID=67170011
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910270404.5A Pending CN110000852A (en) | 2019-04-04 | 2019-04-04 | Hole-forming device, micropore collector foil and preparation method thereof |
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| CN (1) | CN110000852A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843525A (en) * | 2022-03-29 | 2022-08-02 | 佛山市中技烯米新材料有限公司 | Porous current collector and preparation method thereof |
-
2019
- 2019-04-04 CN CN201910270404.5A patent/CN110000852A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843525A (en) * | 2022-03-29 | 2022-08-02 | 佛山市中技烯米新材料有限公司 | Porous current collector and preparation method thereof |
| CN114843525B (en) * | 2022-03-29 | 2023-12-29 | 佛山市中技烯米新材料有限公司 | Porous current collector and preparation method thereof |
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Application publication date: 20190712 |