CN206574779U - It is a kind of to be used for the corona treatment plant and system of lithium ion battery separator or basement membrane - Google Patents
It is a kind of to be used for the corona treatment plant and system of lithium ion battery separator or basement membrane Download PDFInfo
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- CN206574779U CN206574779U CN201720235629.3U CN201720235629U CN206574779U CN 206574779 U CN206574779 U CN 206574779U CN 201720235629 U CN201720235629 U CN 201720235629U CN 206574779 U CN206574779 U CN 206574779U
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- corona
- basement membrane
- corona treatment
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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
Abstract
It is used for the corona treatment plant and system of lithium ion battery separator or basement membrane this application discloses a kind of.The corona treatment plant of the application, including front guide roll, the first Corona roller, the first corona discharge assembly, rear deflector roll；Front guide roll and rear deflector roll are respectively arranged at the both sides of the first Corona roller, are transmitted for barrier film or basement membrane；First corona discharge assembly is arranged at the underface of the first Corona roller, and barrier film or basement membrane are passed through between the first Corona roller and the first corona discharge assembly when using, and sided corona treatment is carried out to a surface of barrier film or basement membrane.The corona treatment plant of the application, designed particular for barrier film and basement membrane, by carrying out sided corona treatment to barrier film or basement membrane, in film surface formation carbonyl and nitrogenous polar group, make film surface static electrification, improve film surface adhesiveness, make film wound on reel film surface do not crease easily, it is more smooth, it is difficult to slide between film surface, film uniformity is more preferable.The corona treatment plant of the application, can improve production efficiency and product qualification rate.
Description
Technical field
The application is related to lithium ion battery separator processing equipment field, more particularly to a kind of to be used for lithium ion battery separator
Or the corona treatment plant and system of basement membrane.
Background technology
Chargeable lithium ion secondary cell has the characteristic of high-energy-density, long circulation life, memory-less effect, has peace again
Entirely, the advantages of reliable and energy fast charging and discharging, thus the focus as novel power supply technical research in recent years.Due to lithium-ion electric
Pond is the secondary cell of green pollution-free, meets the big growth requirement of countries nowadays energy environment protection aspect, in all trades and professions
Usage amount increase sharply.It is anti-that current lithium ion battery is not only widely used in daily well known mobile phone, notebook computer, list
The digital electronic goods such as camera, and it is widely used in some high power batteries aspect such as electric car, electric bicycle.
Barrier film is the important structure member of lithium ion battery, and its performance determines the interfacial structure of battery, internal resistance etc., directly
Connect the characteristics such as capacity, the cycle performance of influence battery.
The barrier film of current commercial lithium-ion batteries is mostly MIcroporous polyolefin film, including polypropylene (abbreviation PP) individual layer is micro-
Pore membrane, polyethylene (abbreviation PE) single layer microporous film or the multilayer microporous film being combined by PP and PE.Existing polyalkene diaphragm production
Technique can be divided into two major classes according to dry and wet, while dry method can be subdivided into simple tension technique and stretch processes again.
Wherein, in the market using it is most be dry method simple tension.
Dry method simple tension technique is the method by producing hard elastic fibre, prepares highly oriented poly- the third of low-crystallinity
Alkene or polyethylene film, the oriented film of high-crystallinity is obtained in high annealing.This film first carries out stretching shape at low temperature
Into microdefects such as crazings, defect then is pulled open under high temperature, form the barrier film containing micropore.The technique passes through the hair of decades
Exhibition, highly developed in the U.S., Japan, China also has many lithium battery diaphragm manufacturers to use the technique.
But in dry method simple tension process of industrialization, although technical maturity, equipment is simpler, will not in production process
Produce any environmental pollution, but the requirement to technology controlling and process is very high, production efficiency and product qualification rate are relatively low, this often into
For restriction barrier film, enterprise reduces the key of production cost.
The content of the invention
The purpose of the application is to provide a kind of new corona treatment plant and system that are used in particular for lithium ion battery separator.
To achieve these goals, the application employs following technical scheme：
The one side of the application discloses a kind of corona treatment plant for lithium ion battery separator or basement membrane, including preceding
Deflector roll 1, the first Corona roller 21, the first corona discharge assembly 22, rear deflector roll 4；Front guide roll 1 and rear deflector roll 4 are respectively arranged at first
The both sides of Corona roller 21, are transmitted for barrier film or basement membrane；First corona discharge assembly 22 be arranged at the first Corona roller 21 just under
Side, barrier film or basement membrane are passed through between the first Corona roller 21 and the first corona discharge assembly 22 when using, to barrier film or basement membrane
One surface carries out sided corona treatment.
It should be noted that the corona treatment plant of the application is designed particular for lithium ion battery separator or basement membrane.
Sided corona treatment is carried out to lithium ion battery separator basement membrane using the corona treatment plant of the application, carbonyl is produced on the surface of basement membrane
With nitrogen-containing group isopolarity group, membrane surface is carried certain electrostatic, improve the adhesiveness of film surface, so that basement membrane is collected
Winding film surface on reel do not crease easily, more smooth, is difficult to slide between film surface, and then makes the uniformity of film more preferably, favorably
Posterior drawing and processing in basement membrane, produce good air permeability, even aperture distribution, tensile strength and fluctuate smaller barrier film,
This suffers from very important effect to the production efficiency and product qualification rate that improve lithium ion battery basement membrane.Likewise, to every
Film carries out sided corona treatment, also can produce carbonyl and nitrogen-containing group isopolarity group in membrane surface, improve the physicochemical property of barrier film,
Winding film surface of the barrier film after sided corona treatment on reel is not creased easily, it is more smooth, be difficult between film surface slide, and then make every
The uniformity of film more preferably, beneficial to the following process of barrier film, improves the use quality and efficiency of barrier film.
It is preferred that, set on the first corona discharge assembly 22 by the first exhaust column 23, for the ozone of sided corona treatment to be taken out
Walk.
It should be noted that sided corona treatment can produce ozone, in order to ensure production safety, ozone can be taken away, then
It is uniformly processed, the safe handling of ozone, with reference to existing ozone treatment technology, does not tire out state herein.
It is preferred that, the corona treatment plant of the application also includes the second Corona roller 31 and the second corona discharge assembly 32, the
Two Corona rollers 31 are arranged between the first Corona roller 21 and rear deflector roll 4, and the second corona discharge assembly 32 is arranged at the second Corona roller
31 surface；In use, barrier film or the S-shaped route of basement membrane bypass the first Corona roller 21 and the second Corona roller 31, also, by
Passed through between two Corona rollers 31 and the second corona discharge assembly 32, sided corona treatment is carried out to another surface of barrier film or basement membrane.
It should be noted that the first Corona roller 21 and the first corona discharge assembly 22 can be to barrier film or a tables of basement membrane
Face carries out sided corona treatment, and in some usage scenarios, it is necessary to all carry out sided corona treatment to two surfaces of barrier film or basement membrane, institute
With, in a kind of improved procedure of the application, also add the second Corona roller 31 and the second corona discharge assembly 32, for every
Another surface of film or basement membrane carries out sided corona treatment.If it is appreciated that only needing to enter a surface of barrier film or basement membrane
Row sided corona treatment, then only need to the first Corona roller 21 and the first corona discharge assembly 22.
Likewise, in order to ensure production safety, setting by the second exhaust column 33, being used on the second corona discharge assembly 32
The ozone of sided corona treatment is taken away.
It is appreciated that the purpose of the first exhaust column 23 and the second exhaust column 33 is all to take the ozone of sided corona treatment generation away；
Under present invention thinking, the first Corona roller 21 and the second Corona roller 31 can be designed completely in relative closure
In space, the space is defined for sided corona treatment area, and then sided corona treatment area progress ozone is taken out using an exhaust column is unified
From；Certainly, according to specific production environment, it is possibility to have other concrete structure designs, it is not specifically limited herein.
It is preferred that, the distance between the first Corona roller 21 and the first corona discharge assembly 22 are 100 μm~5mm, the second electricity
The distance between dizzy corona discharge assembly 32 of roller 31 and second is 100 μm~5mm.
The another side of the application discloses the corona treatment plant of the application in lithium ion battery separator dry method simple tension
Application in system.
It should be noted that the corona treatment plant of the application, on the one hand can especially to lithium ion battery separator basement membrane,
I.e. basement membrane, carries out sided corona treatment；On the other hand, it can also be directly used in and electricity is carried out in itself to the lithium ion battery separator after stretching
Dizzy processing.Therefore, the corona treatment plant of the application can be incorporated into by lithium ion battery according to different use demands completely
In barrier film dry method simple tension system.Certainly, the corona treatment plant of the application can also be as an independent device, individually
Sided corona treatment is carried out to basement membrane or barrier film.
The application's simultaneously discloses a kind of lithium ion battery separator dry method simple tension system, including at least a set of again
The corona treatment plant of application, corona treatment plant is arranged at after screw extrusion apparatus, for carrying out sided corona treatment to basement membrane.
It should be noted that the lithium ion battery separator dry method simple tension system of the application, corona treatment plant is set
It is placed in after screw extrusion apparatus, sided corona treatment is carried out primarily directed to basement membrane；If also needing to carry out sided corona treatment to barrier film,
The corona treatment plant of a set of the application can also be further added by, for example, is arranged at before barrier film winder, corona is carried out to barrier film
Processing, then winds again.
Therefore, in the preferred scheme of the application, lithium ion battery separator dry method simple tension system includes two sets of the application
Corona treatment plant, wherein a set of corona treatment plant is arranged at after screw extrusion apparatus, for carrying out corona to basement membrane
Processing；Another set of corona treatment plant is arranged at before barrier film wrap-up, for carrying out sided corona treatment to barrier film.
A kind of processing method for simultaneously disclosing lithium ion battery separator or basement membrane again of the application, including to lithium-ion electric
Pond barrier film or basement membrane carry out sided corona treatment, and the lithium ion battery separator of sided corona treatment or the surface temperature of basement membrane are 5~100 DEG C.
It should be noted that the lithium ion battery separator of sided corona treatment or the surface temperature of basement membrane are 5~100 DEG C, the temperature
Spend the normal working temperature scope of the corona treatment plant for the application, as long as can just be ensured in the temperature range, every
The surface of film or basement membrane carries out effective sided corona treatment, and carbonyl and nitrogen-containing group isopolarity base are produced on the surface of barrier film or basement membrane
Group, makes barrier film or membrane surface carry certain electrostatic, improves the adhesiveness of film surface.It is appreciated that the temperature of film surface mainly takes
The speed certainly cooled down in the raw materials used heated melting of barrier film or basement membrane after extruder extrusion and time.
It is preferred that, in the processing method of the application, sided corona treatment is carried out using the corona treatment plant of the application.
It is preferred that, lithium ion battery separator basement membrane is polyolefin base membrane, and polyolefin base membrane includes low density polyethylene films, height
Density polyethylene film, low density polypropylene film, high density poly propylene film, and by low density polyethylene films, high density polyethylene (HDPE)
The multilayer complex films of at least two compositions in film, low density polypropylene film and high density poly propylene film.
Due to being using the beneficial effect of above technical scheme, the application：
The application's is used for the corona treatment plant of lithium ion battery separator or basement membrane, is set particular for barrier film or basement membrane
Meter, by carrying out sided corona treatment to barrier film or basement membrane, can make film surface in film surface formation carbonyl and nitrogen-containing group isopolarity group
Static electrification, improves the adhesiveness of film surface, so that the winding film surface of barrier film or basement membrane on reel does not crease easily, more smooth, film
It is difficult to slide between face, makes the uniformity of film more preferable.Barrier film is prepared using the basement membrane of sided corona treatment, not only added beneficial to posterior drawing
Work, and produce barrier film good air permeability, even aperture distribution, tensile strength fluctuation it is smaller, improve lithium ion battery
The production efficiency and product qualification rate of basement membrane.
Brief description of the drawings
Fig. 1 is the structural representation of corona treatment plant in the embodiment of the present application.
Embodiment
Sided corona treatment is to put on high-frequency and high-voltage on sparking electrode, to produce substantial amounts of plasma gas and ozone, with
Processed film surface molecule is directly or indirectly acted on, and makes to produce carbonyl and nitrogen-containing group isopolarity base on its surface molecular chain
Group, surface tension is significantly improved, and coarse surface, so as to improve the adhesiveness on surface, reaches the purpose of surface preparation in addition.Electricity
Dizzy processing has the advantages that the time is short, speed is fast, simple to operate, control is easy.The application creativeness, sided corona treatment is used
In the surface treatment of battery diaphragm and basement membrane, under high-frequency and high-voltage, the ozone of the atom and air ionization of barrier film or membrane surface
Generation replaces or addition reaction, nano level oxide layer is formed in barrier film or membrane surface, to improve the surface of barrier film or basement membrane
Performance；Therefore, being specifically designed and proposing the corona treatment plant of the application.
The application is described in further detail below by specific embodiments and the drawings.Following examples are only to the application
It is further described, should not be construed as the limitation to the application.
Embodiment
This example is used for the corona treatment plant of lithium ion battery separator or basement membrane, as shown in figure 1, including front guide roll 1, first
Corona roller 21, the first corona discharge assembly 22, the second Corona roller 31, the second corona discharge assembly 32 and rear deflector roll 4.Front guide roll 1
The both sides of the first Corona roller 21 are respectively arranged at rear deflector roll 4, the second Corona roller 31 is arranged at the first Corona roller 21 and rear deflector roll 4
Between, front guide roll 1 and rear deflector roll 4 are used for barrier film or basement membrane transmission.First corona discharge assembly 22 is arranged at the first Corona roller 21
Underface, the second corona discharge assembly 32 is arranged at the surface of the second Corona roller 31.Also, the first corona discharge assembly 22
Upper setting is set on the first exhaust column 23, the second corona discharge assembly 32 by the second exhaust column 33.In order to ensure sided corona treatment
Effect, meanwhile, in order to ensure that barrier film or basement membrane pass through, the distance between the first Corona roller 21 and the first corona discharge assembly 22 can
To be designed as 100 μm~5mm, the distance between the second Corona roller 31 and the second corona discharge assembly 32 are 100 μm~5mm；This
Example is specifically designed to 1mm.
In use, keeping 25 DEG C or so of room temperature, two corona discharge assemblies and two exhaust columns, barrier film or basement membrane 5 are opened
S-shaped route bypasses the first Corona roller 21 and the second Corona roller 31, also, during by the first Corona roller 21, barrier film or basement membrane by
Passed through between first Corona roller 21 and the first corona discharge assembly 22, during by the second Corona roller 31, barrier film or basement membrane are by second
Passed through between the corona discharge assembly 32 of Corona roller 31 and second, two Corona rollers are carried out to two surfaces of barrier film or basement membrane respectively
Sided corona treatment.
In addition, according to different use environment or demand, in the improvement project of this example, also carrying out electricity in corona treatment plant
Before dizzy processing, barrier film or basement membrane are heated using heater in advance, it is 5~100 DEG C to make its surface temperature.
In a kind of improved procedure of this example, the corona treatment plant of this example is incorporated into lithium ion battery separator dry method unidirectional
In tensioning system, corona treatment plant is arranged at after screw extrusion apparatus, for carrying out sided corona treatment to basement membrane.Use
When, using the temperature of Screw Extrusion basement membrane in itself, the surface temperature for controlling basement membrane is 5~100 DEG C, and basement membrane is carried out at corona
Reason.
Sided corona treatment is carried out to barrier film or basement membrane using the corona treatment plant of this example, formed on the surface of barrier film or basement membrane
Carbonyl and nitrogen-containing group isopolarity group, make the surface static electrification of barrier film or basement membrane, improve the adhesiveness of film surface, so that barrier film
Or winding film surface of the basement membrane on reel do not crease easily, it is more smooth, be difficult between film surface slide, make the uniformity of film more preferable.Using
The basement membrane of sided corona treatment prepares barrier film, because the film surface of basement membrane is more smooth, and is difficult to slide between film surface, it is more conducive to follow-up drawing
Stretch processing；Also, because the uniformity of basement membrane is more preferable so that the barrier film good air permeability produced, even aperture distribution, stretching
Strength fluctuation is smaller, and this has very important effect to the production efficiency and product qualification rate that improve lithium ion battery basement membrane；
And do not creased easily due to the winding film surface of barrier film or basement membrane, it is more smooth, improve the service efficiency of barrier film or basement membrane, it is to avoid
Waste of material caused by winding corrugation or out-of-flatness.
Above content is to combine the further description that specific embodiment is made to the application, it is impossible to assert this Shen
Specific implementation please is confined to these explanations.For the application person of an ordinary skill in the technical field, do not taking off
On the premise of from the application design, some simple deduction or replace can also be made, the protection of the application should be all considered as belonging to
Scope.
Claims (7)
1. a kind of be used for the corona treatment plant of lithium ion battery separator or basement membrane, it is characterised in that：Including front guide roll (1),
One Corona roller (21), the first corona discharge assembly (22), rear deflector roll (4)；
The front guide roll (1) and rear deflector roll (4) are respectively arranged at the both sides of first Corona roller (21), for barrier film or basement membrane
Transmission；
First corona discharge assembly (22) is arranged at the underface of first Corona roller (21), barrier film or basement membrane when using
Passed through between the first Corona roller (21) and the first corona discharge assembly (22), corona is carried out to a surface of barrier film or basement membrane
Processing.
2. corona treatment plant according to claim 1, it is characterised in that：Set on first corona discharge assembly (22)
Put by the first exhaust column (23), for the ozone of sided corona treatment to be taken away.
3. corona treatment plant according to claim 1 or 2, it is characterised in that：Also include the second Corona roller (31) and the
Two corona discharge assemblies (32), second Corona roller (31) is arranged at first Corona roller (21) and the rear deflector roll (4)
Between, second corona discharge assembly (32) is arranged at the surface of second Corona roller (31)；In use, barrier film or base
The S-shaped route of film bypasses the first Corona roller (21) and the second Corona roller (31), also, by the second Corona roller (31) and the second corona
Electric discharge device is passed through between (32), and sided corona treatment is carried out to another surface of barrier film or basement membrane.
4. corona treatment plant according to claim 3, it is characterised in that：Set on second corona discharge assembly (32)
Put by the second exhaust column (33), for the ozone of sided corona treatment to be taken away.
5. corona treatment plant according to claim 3, it is characterised in that：First Corona roller (21) and the first corona
The distance between electric discharge device (22) is 100 μm~5mm, second Corona roller (31) and the second corona discharge assembly (32) it
Between distance be 100 μm~5mm.
6. a kind of lithium ion battery separator dry method simple tension system, it is characterised in that：Appoint including at least a set of claim 1-5
Corona treatment plant described in one, corona treatment plant is arranged at after screw extrusion apparatus, for carrying out corona to basement membrane
Processing.
7. lithium ion battery separator dry method simple tension system according to claim 6, it is characterised in that：Including two sets of power
Profit requires the corona treatment plant described in any one of 1-5, wherein a set of corona treatment plant is arranged at after screw extrusion apparatus,
For carrying out sided corona treatment to basement membrane；Another set of corona treatment plant is arranged at before barrier film wrap-up, for entering to barrier film
Row sided corona treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720235629.3U CN206574779U (en) | 2017-03-10 | 2017-03-10 | It is a kind of to be used for the corona treatment plant and system of lithium ion battery separator or basement membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720235629.3U CN206574779U (en) | 2017-03-10 | 2017-03-10 | It is a kind of to be used for the corona treatment plant and system of lithium ion battery separator or basement membrane |
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| Publication Number | Publication Date |
|---|---|
| CN206574779U true CN206574779U (en) | 2017-10-20 |
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ID=60058002
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720235629.3U Active CN206574779U (en) | 2017-03-10 | 2017-03-10 | It is a kind of to be used for the corona treatment plant and system of lithium ion battery separator or basement membrane |
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| CN (1) | CN206574779U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046117A (en) * | 2017-03-10 | 2017-08-15 | 深圳中兴创新材料技术有限公司 | A kind of corona treatment plant and its application for lithium ion battery separator or basement membrane |
| CN108284626A (en) * | 2018-01-11 | 2018-07-17 | 何佳遥 | A kind of system for processing PVC |
-
2017
- 2017-03-10 CN CN201720235629.3U patent/CN206574779U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046117A (en) * | 2017-03-10 | 2017-08-15 | 深圳中兴创新材料技术有限公司 | A kind of corona treatment plant and its application for lithium ion battery separator or basement membrane |
| CN108284626A (en) * | 2018-01-11 | 2018-07-17 | 何佳遥 | A kind of system for processing PVC |
| CN108284626B (en) * | 2018-01-11 | 2019-04-09 | 嘉兴新安包装材料有限公司 | A kind of system for processing PVC |
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Address after: 518120 No. 8 Binhai Road, Dapeng street, Dapeng New District, Shenzhen, Guangdong, China. Patentee after: Shenzhen Zhongxing new material technology Limited by Share Ltd Address before: 518020 Shenzhen, Guangdong Dapeng New District Dapeng street water head community Zhongxing Xinzhou complete equipment Co., Ltd. 3 plant 102 Patentee before: Shenzhen ZTE Innovation Material Technology Co., Ltd. |