CN108838560A - A kind of preparation facilities of porous current collector of lithium ion battery and preparation method thereof - Google Patents
A kind of preparation facilities of porous current collector of lithium ion battery and preparation method thereof Download PDFInfo
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- CN108838560A CN108838560A CN201810757822.2A CN201810757822A CN108838560A CN 108838560 A CN108838560 A CN 108838560A CN 201810757822 A CN201810757822 A CN 201810757822A CN 108838560 A CN108838560 A CN 108838560A
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- laser beam
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- light transmission
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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
- B23K26/382—Removing material by boring or cutting by boring
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- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses preparation facilities of porous current collector of a kind of lithium ion battery and preparation method thereof, including laser beam transmitter, light transmission grating and collector, and light transmission grating is between laser beam transmitter and collector；The transparent grating is located at the surface at collector ending；Unthreaded hole is provided on the transparent grating；The laser beam transmitter is located at the surface of transparent grating.The preparation facilities of porous current collector and preparation method thereof of lithium ion battery proposed by the present invention, laser beam is emitted using laser beam transmitter, laser beam is intercepted by light transmission grating, laser beam punches foil by unthreaded hole and forms micropore, and the thermal energy of laser beam makes the hole edge of foil form molten state, the formation of burr is avoided, the risk of leakage after coating is reduced；The pore size distribution integrally prepared is uniform, and quantity is more, effectively alleviates the quality accounting of foil, and aperture is small, reduces the risk of leakage after coating.
Description
Technical field
The present invention relates to porous current collector preparation technical field, in particular to a kind of porous current collector of lithium ion battery
Preparation facilities and preparation method thereof.
Background technique
In recent years, the energy density of lithium ion battery is higher and higher, and experts and scholars are in terms of the research of positive and negative pole material
The very big time has been descended, has also been had made great progress.However, the pursuit to energy density does not stop.Therefore, Porous Cu aluminium foil
The extensive concern of people is received, but current porous foil is mostly two kinds of pore-forming modes：1. mechanical hole building, aperture is very big,
The risk of leakage is caused to coating, and there are burrs around hole；2. using the preparation process of chemical attack, pore-forming is very uneven
It is even, and the quantity in hole is fewer and fewer, is unable to reach porous purpose；To solve the above problems, therefore propose it is a kind of for lithium from
The preparation method of the porous current collector of sub- battery.
Summary of the invention
Solve the problem of that existing collector pore-forming aperture is big for this and around hole there are burr, it is an object of the invention to
A kind of preparation facilities of porous current collector and preparation method thereof of lithium ion battery is provided, has the unthreaded hole of preparation more, distribution is equal
Even, aperture is small, carrot-free advantage, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides the following technical solutions：A kind of system of the porous current collector of lithium ion battery
Standby device, including laser beam transmitter, light transmission grating and collector, light transmission grating is between laser beam transmitter and collector；
The light transmission grating and collector are parallel to the ground, and transparent grating is located at the surface at collector ending；The transparent light
Unthreaded hole is provided on grid, unthreaded hole is arranged on transparent grating in array type；The laser beam transmitter be located at transparent grating just on
Side, the transmitting terminal face transparent grating of laser beam transmitter.
Preferably, the aperture of unthreaded hole is 5nm-10nm on the transparent grating, and adjacent unthreaded hole spacing is 50nm-100nm.
Preferably, the laser beam transmitter transmitting is directional light.
Preferably, the collector uses foil.
Another technical solution provided by the invention：A kind of preparation method of the porous current collector of lithium ion battery, including
Following steps：
S1：Laser beam transmitter installation is firm, so that laser beam transmitter is obtained transmitting terminal and vertically shines on the ground；
S2：Light transmission grating is mounted on to the lower end of laser beam transmitter, keeps light transmission grating parallel to the ground, light transmission grating with
The beam orthogonal of laser beam transmitter transmitting；
S3：Collector is laid on to the lower section of light transmission grating, the tail of collector is disposed in the positive lower end of light transmission grating；
S4：Laser beam transmitter is opened, the laser beam of transmitting is made to pass through unthreaded hole irradiation on a current collector, laser beam itself
High-energy, which touches, to be converted to thermal energy after collector and punches collector, forms micropore in collector.
Compared with prior art, the beneficial effects of the invention are as follows：The porous current collector of lithium ion battery proposed by the present invention
Preparation facilities and preparation method thereof, light source is used as using the laser beam of laser beam transmitter transmitting, in laser beam transmitter and
One block of nanoscale light transmission grating is placed among collector, and collector is laid on to the lower section of light transmission grating, and the receipts of collector
Tail is disposed in the positive lower end of light transmission grating, is intercepted by light transmission grating to laser beam, so that beating laser on a current collector
Beam is the extra narrow beams of nanoscale 5nm-10nm, and laser beam punches the micropore that foil forms 5nm-10nm or so, and laser beam
Thermal energy so that the hole edge of foil is formed molten state, avoid the formation of burr, reduce the risk of leakage after coating；Whole preparation
Pore size distribution it is uniform, quantity is more, effectively alleviate the quality accounting of foil, and aperture is small, reduces leakage after coating
Risk.
Detailed description of the invention
Fig. 1 is overall structure figure of the invention.
In figure：1, laser beam transmitter；2, light transmission grating；21, unthreaded hole；3, collector.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of preparation facilities of the porous current collector of lithium ion battery, including laser beam transmitter 1, light transmission
Grating 2 and collector 3, light transmission grating 2 is between laser beam transmitter 1 and collector 3；Light transmission grating 2 and collector 3 with ground
Face is parallel, and transparent grating 2 is located at the surface at 3 ending of collector, and collector 3 uses foil；Unthreaded hole is provided on transparent grating 2
21, unthreaded hole 21 is arranged on transparent grating 2 in array type, and the aperture of unthreaded hole 21 is 5nm-10nm, and adjacent 21 spacing of unthreaded hole is
50nm-100nm；Laser beam transmitter 1 is located at the surface of transparent grating 2, the transparent light of transmitting terminal face of laser beam transmitter 1
Grid 2, the transmitting of laser beam transmitter 1 is directional light.
A kind of preparation method of the porous current collector of lithium ion battery, includes the following steps：
The first step：The installation of laser beam transmitter 1 is firm, so that laser beam transmitter 1 is obtained transmitting terminal and vertically shines on the ground；
Second step：Light transmission grating 2 is mounted on to the lower end of laser beam transmitter 1, keeps light transmission grating 2 parallel to the ground, thoroughly
The beam orthogonal that light grating 2 and laser beam transmitter 1 emit；
Third step：Collector 3 is laid on to the lower section of light transmission grating 2, the tail of collector 3 is disposed in light transmission grating 2
Positive lower end；
4th step：Laser beam transmitter 1 is opened, so that the laser beam of transmitting is passed through unthreaded hole 21 and is radiated on collector 3, laser
The high-energy of Shu Benshen, which touches, to be converted to thermal energy after collector 3 and punches collector 3, forms micropore in collector 3.
Preparation facilities of porous current collector of the lithium ion battery and preparation method thereof is emitted using laser beam transmitter 1
Laser beam as light source, one block of nanoscale light transmission grating 2, light transmission light are placed among laser beam transmitter 1 and collector 3
21 aperture of unthreaded hole of grid 2 is 5nm-10nm, and adjacent 21 spacing of unthreaded hole is 50nm-100nm, and unthreaded hole 21 is evenly distributed, and quantity is more,
Collector 3 is laid on to the lower section of light transmission grating 2, and the tail of collector 3 is disposed in the positive lower end of light transmission grating 2, and light transmission is passed through
Grating 2 intercepts laser beam, so that the extra narrow beams that the laser beam beaten on collector 3 is nanoscale 5nm-10nm,
The high-energy of laser beam itself, which touches, to be converted to thermal energy after foil and punches foil, forms the micropore of 5nm-10nm or so, and swash
The thermal energy of light beam makes the hole edge of foil form molten state, avoids the formation of burr, reduces the risk of leakage after coating；It is whole
The pore size distribution of preparation is uniform, and quantity is more, effectively alleviates the quality accounting of foil, and aperture is small, reduces coating back leak
The risk of liquid.
In conclusion the preparation facilities of porous current collector and preparation method thereof of lithium ion battery proposed by the present invention, is adopted
The laser beam for using laser beam transmitter 1 to emit places one piece of nanometer as light source among laser beam transmitter 1 and collector 3
Collector 3 is laid on the lower section of light transmission grating 2 by the light transmission grating 2 of grade, and the ending of collector 3 is disposed in light transmission grating 2
Positive lower end intercepts laser beam by light transmission grating 2, so that the laser beam beaten on collector 3 is nanoscale 5nm-
The extra narrow beams of 10nm, laser beam punches the micropore that foil forms 5nm-10nm or so, and the thermal energy of laser beam makes foil
Hole edge forms molten state, avoids the formation of burr, reduces the risk of leakage after coating；The pore size distribution integrally prepared is uniform,
Quantity is more, effectively alleviates the quality accounting of foil, and aperture is small, reduces the risk of leakage after coating.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of preparation facilities of the porous current collector of lithium ion battery, which is characterized in that including laser beam transmitter (1), thoroughly
Light grating (2) and collector (3), light transmission grating (2) are located between laser beam transmitter (1) and collector (3)；The light transmission grating
(2) and collector (3) is parallel to the ground, and transparent grating (2) is located at the surface at collector (3) ending；The transparent light
It is provided on grid (2) unthreaded hole (21), unthreaded hole (21) is arranged on transparent grating (2) in array type；Laser beam transmitter (1) position
In the surface of transparent grating (2), the transmitting terminal face transparent grating (2) of laser beam transmitter (1).
2. a kind of preparation facilities of the porous current collector of lithium ion battery as described in claim 1, it is characterised in that：It is described
The aperture of unthreaded hole (21) is 5nm-10nm on Mingguang City's grid (2), and adjacent unthreaded hole (21) spacing is 50nm-100nm.
3. a kind of preparation facilities of the porous current collector of lithium ion battery as described in claim 1, it is characterised in that：It is described to swash
Light-beam transmitter (1) transmitting is directional light.
4. a kind of preparation facilities of the porous current collector of lithium ion battery as described in claim 1, it is characterised in that：The collection
Fluid (3) uses foil.
5. a kind of preparation method of the porous current collector of lithium ion battery as described in claim 1, which is characterized in that including such as
Lower step：
S1：Laser beam transmitter (1) installation is firm, so that laser beam transmitter (1) is obtained transmitting terminal and vertically shines on the ground；
S2：Light transmission grating (2) is mounted on to the lower end of laser beam transmitter (1), keeps light transmission grating (2) parallel to the ground, light transmission
The beam orthogonal of grating (2) and laser beam transmitter (1) transmitting；
S3：Collector (3) is laid on to the lower section of light transmission grating (2), the tail of collector (3) is disposed in light transmission grating (2)
Positive lower end；
S4：It opens laser beam transmitter (1), so that the laser beam of transmitting is passed through unthreaded hole (21) and be radiated on collector (3), laser beam
The high-energy of itself, which touches, to be converted to thermal energy after collector (3) and punches collector (3), forms micropore in collector (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810757822.2A CN108838560A (en) | 2018-07-11 | 2018-07-11 | A kind of preparation facilities of porous current collector of lithium ion battery and preparation method thereof |
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| CN201810757822.2A CN108838560A (en) | 2018-07-11 | 2018-07-11 | A kind of preparation facilities of porous current collector of lithium ion battery and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494374A (en) * | 2018-11-12 | 2019-03-19 | 桑顿新能源科技有限公司 | Lithium ion battery silicon-carbon cathode piece and preparation method thereof |
| CN109877470A (en) * | 2019-03-19 | 2019-06-14 | 东华大学 | A kind of preparation method of lithium ion battery porous copper foil |
| CN110102901A (en) * | 2019-04-30 | 2019-08-09 | 上海工程技术大学 | The ultrafast laser three-dimensional micro-nano texture method on negative electrode of lithium ion battery copper foil current collector surface |
| CN110492107A (en) * | 2019-08-26 | 2019-11-22 | 英诺激光科技股份有限公司 | A method of preparing lithium battery porous copper foil collector |
| CN114799497A (en) * | 2021-01-29 | 2022-07-29 | 武汉楚能电子有限公司 | Method and device for dividing micrometer laser beam into nanometer laser beam array and application |
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| CN1269276A (en) * | 1999-04-02 | 2000-10-11 | 株式会社村田制作所 | Method and apparatus for processing ceramic inner piece |
| CN203156234U (en) * | 2013-03-19 | 2013-08-28 | 宁德新能源科技有限公司 | Lithium ion battery pole piece and processing device thereof |
| CN204441313U (en) * | 2015-03-20 | 2015-07-01 | 江苏盎华光伏工程技术研究中心有限公司 | A kind of laser assisted device for silicon solar cell local fields |
| CN106425110A (en) * | 2016-10-28 | 2017-02-22 | 深圳瑞隆新能源科技有限公司 | Manufacturing method of high-specific-surface-area current collector |
| CN108011108A (en) * | 2017-11-09 | 2018-05-08 | 合肥国轩高科动力能源有限公司 | A kind of preparation method of the lithium ion battery containing porous copper foil |
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2018
- 2018-07-11 CN CN201810757822.2A patent/CN108838560A/en active Pending
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| CN1269276A (en) * | 1999-04-02 | 2000-10-11 | 株式会社村田制作所 | Method and apparatus for processing ceramic inner piece |
| CN203156234U (en) * | 2013-03-19 | 2013-08-28 | 宁德新能源科技有限公司 | Lithium ion battery pole piece and processing device thereof |
| CN204441313U (en) * | 2015-03-20 | 2015-07-01 | 江苏盎华光伏工程技术研究中心有限公司 | A kind of laser assisted device for silicon solar cell local fields |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494374A (en) * | 2018-11-12 | 2019-03-19 | 桑顿新能源科技有限公司 | Lithium ion battery silicon-carbon cathode piece and preparation method thereof |
| CN109877470A (en) * | 2019-03-19 | 2019-06-14 | 东华大学 | A kind of preparation method of lithium ion battery porous copper foil |
| CN110102901A (en) * | 2019-04-30 | 2019-08-09 | 上海工程技术大学 | The ultrafast laser three-dimensional micro-nano texture method on negative electrode of lithium ion battery copper foil current collector surface |
| CN110492107A (en) * | 2019-08-26 | 2019-11-22 | 英诺激光科技股份有限公司 | A method of preparing lithium battery porous copper foil collector |
| CN114799497A (en) * | 2021-01-29 | 2022-07-29 | 武汉楚能电子有限公司 | Method and device for dividing micrometer laser beam into nanometer laser beam array and application |
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Application publication date: 20181120 |