CN104078690A - Automatic processing device for saponifying batteries and control method of device - Google Patents
Automatic processing device for saponifying batteries and control method of device Download PDFInfo
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- CN104078690A CN104078690A CN201410219438.9A CN201410219438A CN104078690A CN 104078690 A CN104078690 A CN 104078690A CN 201410219438 A CN201410219438 A CN 201410219438A CN 104078690 A CN104078690 A CN 104078690A
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- saponification
- barrier film
- roller
- guide post
- circle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses an automatic processing device for saponifying batteries. The automatic processing device comprises a left bracket and a right bracket, wherein a saponifying tank is mounted between the left bracket and the right bracket; a diaphragm unwinding roller and a first diaphragm guide rod are mounted on the right bracket; a diaphragm winding roller, a viscose cloth roller and a diaphragm collecting power device are mounted on the left bracket; the diaphragm collecting power device is used for driving the diaphragm winding roller to rotate so as to recycle diaphragms of silver-zinc batteries; a diaphragm guide rod group is arranged in the saponifying tank; the diaphragms unwound by the diaphragm unwinding roller are fed into the saponifying tank for saponifying, wound by the diaphragm guide rod group and then fed into the diaphragm winding roller. The automatic processing device for saponifying the batteries has the advantages of being simple in structure, novel in design and capable of effectively saponifying the diaphragms, saponifying a relatively large quantity of diaphragms for one time, improving the production efficiency of the diaphragms and increasing the saponification yield; moreover, the automatic processing device is low in production cost; workers can maintain the automatic processing device conveniently.
Description
Technical field
The present invention relates to smee cell manufacturing technology field, specifically, is a kind of battery saponification automatic processing equipment and control method thereof.
Background technology
At present, smee cell can have high capacitance and stable battery performance, thereby is widely used in now the leading-edge fields such as space shuttle, guided missile, torpedo.In the structure of smee cell, barrier film is one of crucial interior layer assembly.Barrier film material is nonconducting, and barrier film is between positive pole and negative pole, and Main Function is that both positive and negative polarity active material is separated, and prevents that the two poles of the earth are because of contact short circuit; During this external electrochemical reaction, keep necessary electrolyte, form the passage of ionic transfer.Therefore, the performance of barrier film has determined the interfacial structure, internal resistance of battery etc., directly affects the characteristics such as capacity, circulation and security performance of battery, and the barrier film of excellent performance has important effect to improving the combination property of battery.
Yet, in prior art, but for barrier film, do not produce special-purpose device for saponifying, make the production efficiency of barrier film lower, and rate of finished products and performance etc. are not high, this has increased the production and application cost of barrier film undoubtedly.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide efficient special-purpose battery saponification automatic processing equipment and control method thereof in a kind of barrier film production process.
For achieving the above object, the present invention adopts following technical scheme:
A kind of battery saponification automatic processing equipment, its key is: be provided with left socle and right support, saponification pond is installed between described left socle and right support, barrier film is installed on described right support and puts circle roller and the first barrier film guide post, barrier film is installed on described left socle and receives circle roller, sticky cloth roller and winder power set, described winder power set rotate for driving described barrier film to receive circle roller the recovery that realizes smee cell barrier film, in described saponification pond, be provided with barrier film guide post group, described barrier film is put the circle roller smee cell barrier film of emitting and through described the first barrier film guide post, is sent into described saponification pond and carry out saponification processing, this smee cell barrier film in sending into described barrier film receipts circle roller after folding through described barrier film guide post group in saponification pond, when described barrier film is received circle roller recovery smee cell barrier film, sticky cloth on described sticky cloth roller is also folded between adjacent two layers smee cell barrier film.
This device is in concrete production process, smee cell barrier film is put to circle roller from barrier film emits, after the first barrier film guide post, send in saponification pond, and by barrier film guide post group by smee cell barrier film around folding in saponification pond, after saponification is processed, by controlling winder power set, drive the smee cell barrier film after barrier film receipts circle roller is processed saponification to collect,, the sticky cloth on sticky cloth roller is folded between adjacent two layers smee cell barrier film meanwhile.In addition, because smee cell barrier film is very thin, between barrier film, viscosity is stronger after the saponification, easily causes diaphragm failures while using in the later stage, and therefore sticky cloth is set, and can to reduce damage cost-saving.By this device saponification Processing Ag zinc battery barrier film, simple to operation, can effectively to barrier film, carry out saponification processing, contribute to improve the production efficiency of barrier film and the rate of finished products of saponification barrier film.
Described saponification pond comprises saponification case and boiler, and described saponification case is arranged in boiler, and overflow pipe and row's saponification liquor pipe are installed on described saponification case, and water inlet pipe and drainage pipe are installed on described boiler.
Adopt said structure, be convenient to inject hot water saponification liquor is heated, make its requirement that reaches saponification, improve the rate of finished products of barrier film saponification; Above-mentioned pipeline is set in addition and is convenient to interpolation and the discharge of hot water and saponification liquor in saponification process, improved production efficiency.
At the bottom of described overflow pipe is positioned at the bottom of described saponification case and runs through the case of described boiler with row's saponification liquor Guan Jun.
Overflow pipe and row's saponification liquor pipe are set like this, make the layout of device more reasonable, can have other corollary equipments of more sufficient space mounting simultaneously.
On described saponification pond, be provided with the first temperature sensor and the second temperature sensor, the induction end of described the first temperature sensor stretches in described saponification case, and the induction end of described the second temperature sensor stretches in described boiler.
Set temperature meter is convenient to the temperature of hot water and saponification liquor to monitor, and is convenient to saponification process to monitor, and injects in time hot water saponification liquor is heated, and guarantees that saponification process constant temperature carries out, and contributes to improve the rate of finished products of barrier film saponification.
Described barrier film guide post group comprises the second guide post group that is positioned at the first guide post group on described saponification case right side and is positioned at described saponification case left side, described the first guide post group is respectively the first guide roller, the first polished rod and the 3rd guide roller from top to bottom, and described the second guide post group is respectively the second guide roller, the second polished rod and the 4th guide roller from top to bottom.
By said structure, can easily barrier film be fixed, facilitate the carrying out of saponification processing procedure; Many guide rollers and polished rod are set in addition, can the more film of disposable saponification, improved production efficiency.
Described barrier film is put the installation site of circle roller lower than described the first barrier film guide post, described the first barrier film guide post and described barrier film are received the installation site of circle roller all higher than described saponification pond, on described right support, be provided with linear transducer, the length-testing wheel of this linear transducer is near described the first barrier film guide post.
The installation site of barrier film being put to circle roller reduces, and makes to put circle roller at the fully loaded barrier film of installation more laborsaving.Barrier film is received to circle roller and raise, can increase the recovery utilization rate of saponification liquor, reduce production cost; Also reduce the viscosity between barrier film, avoided the damage of barrier film.Linear transducer is set and is convenient to the barrier film length of saponification to monitor, facilitate and in saponification process, change barrier film and receive circle roller.
Described winder power set comprise motor, on the output shaft of this motor, be provided with driving gear, at described barrier film, receive on circle roller and be provided with driven gear, described motor drives described barrier film to receive circle roller by driving gear and driven gear engagement and reclaims smee cell barrier film.
Adopt said gear drive mechanism, when device is produced, saved production cost, in early stage, be convenient to the installation of device, in the later stage, be convenient to staff and carry out care and maintenance.
On described left socle, be provided with sticky cloth guide post, the sticky cloth on described sticky cloth roller is sent into described barrier film and is received in circle roller after described sticky cloth guide post.
Sticky cloth guide post is set and can changes the stressed direction of sticky cloth, reduce the frictional force between sticky cloth and sticky cloth, be convenient in production process, sticky cloth is folded between barrier film, improved operating efficiency.In addition, because smee cell barrier film is very thin, between barrier film, viscosity is stronger after the saponification, easily causes diaphragm failures while using in the later stage, and therefore sticky cloth is set, and can to reduce damage cost-saving.
A control method for battery saponification automatic processing equipment, its key is to carry out according to following steps:
Step 1: default saponification gap length, receipts circle length and saponification liquor temperature;
Step 2: add saponification liquor in saponification case, and inject hot water in boiler, by the hot water in boiler, saponification liquor is heated;
Step 3: when the saponification liquor in saponification case is heated to default saponification liquor temperature, barrier film is put to the smee cell barrier film of circle on roller and send in saponification case and carry out saponification processing, start winder power set simultaneously and drive barrier film to receive circle roller to reclaim the smee cell barrier film of saponification;
Step 4: when the saponification of smee cell barrier film reaches default saponification gap length, send alarm signal, saponification liquor is added in prompting;
Step 5: when saponification length reaches default receipts circle length, send alarm signal, prompting replacing barrier film is received and enclosed roller, returns to step 4, until the saponification of all smee cell barrier films is complete.
Remarkable result of the present invention is: simple in structure, modern design, can be fixed smee cell barrier film easily by barrier film guide post group, facilitates saponification to process; Many barrier film guide posts are set, can the more film of disposable saponification, improved production efficiency; This device can carry out saponification processing to barrier film effectively, has improved production efficiency and the saponification rate of finished products of barrier film; This device production cost is lower, is convenient to staff carries out maintaining in the later stage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is vertical view of the present invention;
Fig. 3 is smee cell barrier film assembling schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention and operation principle are described in further detail.
Referring to accompanying drawing 1-2, a kind of battery saponification automatic processing equipment, be provided with left socle 1a and right support 1b, between described left socle 1a and right support 1b, saponification pond 2 is installed, barrier film is installed on described right support 1b and puts circle roller 7 and the first barrier film guide post 8, barrier film is installed on described left socle 1a and receives circle roller 4, sticky cloth roller 5 and winder power set 6, in described saponification pond 2, be provided with barrier film guide post group 3, described barrier film is put the circle roller 7 smee cell barrier film of emitting and is sent in described saponification pond 2 through described the first barrier film guide post 8, this smee cell barrier film is interior sending into after folding through described barrier film guide post group 3 in described barrier film receipts circle roller 4 in saponification pond 2, when described barrier film is received circle roller 4 recovery smee cell barrier film, sticky cloth on described sticky cloth roller 5 is folded between adjacent two layers smee cell barrier film.
As shown in Figure 1, in the present embodiment, for the ease of saponification liquor is heated, guarantee the speed of saponification, described saponification pond 2 comprises saponification case 2a and boiler 2b, described saponification case 2a is arranged in boiler 2b, and overflow pipe 10 and row's saponification liquor pipe 11 are installed on described saponification case 2a, and water inlet pipe 12 and drainage pipe 13 are installed on described boiler 2b; At the bottom of described overflow pipe 10 is all positioned at the bottom of described saponification case 2a and runs through the case of described boiler 2b with row's saponification liquor pipe 11.
As shown in accompanying drawing 1-2, the reaction temperature of saponification liquor mainly concentrates on two regions, 40 ℃-45 ℃ and 50 ℃-55 ℃, therefore in saponification process, needs the temperature of added hot water and saponification liquor to detect, to immediately add hot water, improve the rate of finished products of barrier film saponification.Therefore in specific implementation process, on described saponification pond 2, be provided with the first temperature sensor 14 and the second temperature sensor 15, the induction end of described the first temperature sensor 14 stretches in described saponification case 2a, and the induction end of described the second temperature sensor 15 stretches in described boiler 2b.
As shown in Figure 1, as a kind of specific embodiment, for can the more smee cell barrier film of disposable saponification, described barrier film guide post group 3 comprises the second guide post group that is positioned at the first guide post group on described saponification case 2a right side and is positioned at described saponification case 2a left side, described the first guide post group is respectively the first guide roller, the first polished rod and the 3rd guide roller from top to bottom, and described the second guide post group is respectively the second guide roller, the second polished rod and the 4th guide roller from top to bottom.
As shown in Figure 1, because smee cell barrier film is very thin, viscosity after saponification between barrier film is stronger, while using in the later stage, easily cause diaphragm failures, cost-saving in order to reduce damage, on described left socle 1a, near described sticky cloth roller 5, be provided with sticky cloth guide post 16, the sticky cloth on described sticky cloth roller 5 is sent into described barrier film and is received in circle roller 4 after described sticky cloth guide post 16.
The present embodiment is in specific implementation process, described barrier film is put the installation site of circle roller 7 lower than described the first barrier film guide post 8, described the first barrier film guide post 8 and described barrier film are received the installation site of circle roller 4 all higher than described saponification pond 2, on described right support 1a, be provided with linear transducer 9, the length-testing wheel of this linear transducer 9 is near described the first barrier film guide post 8.
Wherein, described linear transducer 9 adopts the disclosed film measuring motion of Chinese patent CN202403685U, and this device comprises length-testing wheel, and the excircle of described length-testing wheel and described the first barrier film guide post 8 Elastic Contact are connected with encoder on described length-testing wheel.Its operation principle: smee cell barrier film is surveyed when long at needs, barrier film moves on the first barrier film guide post 8, now because length-testing wheel contacts with film, in barrier film moving process, length-testing wheel is also rotating, and when barrier film moves certain distance, length-testing wheel also turns over corresponding revolution, this revolution demonstrates the length of barrier film after calculating by encoder, can measure the length of smee cell barrier film.
As preferably, described winder power set 6 comprise motor, on the output shaft of this motor, be provided with driving gear, at described barrier film, receive on circle roller 4 and be provided with driven gear, described motor drives described barrier film to receive circle roller 4 by driving gear and driven gear engagement and reclaims smee cell barrier film.
Before the saponification of smee cell barrier film, first described barrier film being put to circle roller 7 is arranged on device, then according to shown in accompanying drawing 3, smee cell barrier film is installed on device for saponifying, be specially: from described barrier film, put circle roller 7 and emit smee cell barrier film, then through described the first barrier film guide post 8, send in described saponification pond 2, then smee cell barrier film is delivered to the first polished rod through the second guide roller from the bottom of the first guide roller after folding, from the top of the first polished rod, emit through the second polished rod and send into the 3rd guide roller after folding afterwards, finally from the top of the 3rd guide roller, through the described barrier film of sending into after folding of the 4th guide roller, receive in circle roller 4.
Then according to following control method control device, smee cell barrier film is carried out to saponification processing:
First enter step 1: default saponification gap length, receipts circle length and saponification temperature, in the present embodiment, saponification gap length is 2.99 meters, receiving circle length is 100 meters;
Enter step 2: in saponification case 2a, add saponification liquor, and inject hot water in boiler 2b, by the hot water in boiler 2b, saponification liquor is heated;
Then enter step 3: when the saponification liquor in saponification case 2a is heated to default saponification temperature, barrier film is put to the smee cell barrier film of circle on roller 7 and send in saponification case 2a and carry out saponification processing, start winder power set 6 simultaneously and drive barrier films to receive circle rollers 4 to reclaim the smee cell barrier film of saponification;
Enter afterwards step 4: when the saponification of smee cell barrier film reaches default saponification gap length, send alarm signal, saponification liquor is added in prompting;
Finally enter step 5: when saponification length reaches default receipts circle length, send alarm signal, prompting replacing barrier film is received and enclosed roller 4, returns to step 4, until the saponification of all smee cell barrier films is complete.
In the present invention, described barrier film is put the circle roller 7 smee cell barrier film of emitting and is sent in described saponification pond 2 through described the first barrier film guide post 8, this smee cell barrier film is interior in the described barrier film receipts circle of sending into after folding of the first guide post group and the second guide post group in described barrier film guide post group 3 roller 4 in saponification pond 2, when smee cell barrier film carries out after saponification processing, starting winder power set 6 drives 4 rotations of barrier film receipts circle roller to reclaim smee cell barrier film, when described barrier film is received circle roller 4 recovery smee cell barrier film, also the sticky cloth on described sticky cloth roller 5 is folded between adjacent two layers smee cell barrier film.This device is simple to operate, can the more film of disposable saponification, improved production efficiency and saponification rate of finished products; This device production cost is lower in addition, is also convenient to staff carries out maintaining in the later stage.
Claims (9)
1. a battery saponification automatic processing equipment, it is characterized in that: be provided with left socle (1a) and right support (1b), between described left socle (1a) and right support (1b), saponification pond (2) is installed, barrier film is installed on described right support (1b) and puts circle roller (7) and the first barrier film guide post (8), barrier film is installed on described left socle (1a) and receives circle roller (4), sticky cloth roller (5) and winder power set (6), described winder power set (6) rotate for driving described barrier film to receive circle roller (4) recovery that realizes smee cell barrier film, in described saponification pond (2), be provided with barrier film guide post group (3), described barrier film is put circle roller (7) the smee cell barrier film of emitting and through described the first barrier film guide post (8), is sent into described saponification pond (2) and carry out saponification processing, this smee cell barrier film is being sent in described barrier film receipts circle rollers (4) through described barrier film guide post group (3) in saponification pond (2) after folding, when described barrier film is received circle roller (4) recovery smee cell barrier film, sticky cloth on described sticky cloth roller (5) is also folded between adjacent two layers smee cell barrier film.
2. battery saponification automatic processing equipment according to claim 1, it is characterized in that: described saponification pond (2) comprises saponification case (2a) and boiler (2b), described saponification case (2a) is arranged in boiler (2b), overflow pipe (10) and row's saponification liquor pipe (11) are installed on described saponification case (2a), water inlet pipe (12) and drainage pipe (13) are installed on described boiler (2b).
3. battery saponification automatic processing equipment according to claim 2, is characterized in that: at the bottom of described overflow pipe (10) is all positioned at the bottom of described saponification case (2a) and runs through the case of described boiler (2b) with row's saponification liquor pipe (11).
4. battery saponification automatic processing equipment according to claim 2, it is characterized in that: on described saponification pond (2), be provided with the first temperature sensor (14) and the second temperature sensor (15), the induction end of described the first temperature sensor (14) stretches in described saponification case (2a), and the induction end of described the second temperature sensor (15) stretches in described boiler (2b).
5. battery saponification automatic processing equipment according to claim 2, it is characterized in that: described barrier film guide post group (3) comprises the second guide post group that is positioned at the first guide post group on described saponification case (2a) right side and is positioned at described saponification case (2a) left side, described the first guide post group is respectively the first guide roller, the first polished rod and the 3rd guide roller from top to bottom, and described the second guide post group is respectively the second guide roller, the second polished rod and the 4th guide roller from top to bottom.
6. battery saponification automatic processing equipment according to claim 1, it is characterized in that: described barrier film is put the installation site of circle roller (7) lower than described the first barrier film guide post (8), the installation site that described the first barrier film guide post (8) and described barrier film are received circle rollers (4) is all higher than described saponification pond (2), on described right support (1b), be provided with linear transducer (9), the length-testing wheel of this linear transducer (9) is near described the first barrier film guide post (8).
7. battery saponification automatic processing equipment according to claim 1, it is characterized in that: described winder power set (6) comprise motor, on the output shaft of this motor, be provided with driving gear, at described barrier film, receive on circle roller (4) and be provided with driven gear, described motor drives described barrier film to receive circle roller (4) by driving gear and driven gear engagement and reclaims smee cell barrier film.
8. battery saponification automatic processing equipment according to claim 1, it is characterized in that: on described left socle (1a), be provided with sticky cloth guide post (16), the sticky cloth on described sticky cloth roller (5) is sent into described barrier film and received in circle roller (4) after described sticky cloth guide post (16).
9. a control method for the battery saponification automatic processing equipment as described in claim 1-8 any one, is characterized in that carrying out according to following steps:
Step 1: default saponification gap length, receipts circle length and saponification temperature;
Step 2: add saponification liquor in saponification case (2a), and inject hot water in boiler (2b), by the hot water in boiler (2b), saponification liquor is heated;
Step 3: when the saponification liquor in saponification case (2a) is heated to default saponification temperature, barrier film is put to smee cell barrier film on circle roller (7) and send in saponification case (2a) and carry out saponification processing, start winder power set (6) simultaneously and drive barrier film to receive circle rollers (4) to reclaim the smee cell barrier film of saponification;
Step 4: when the saponification of smee cell barrier film reaches default saponification gap length, send alarm signal, saponification liquor is added in prompting;
Step 5: when saponification length reaches default receipts circle length, send alarm signal, prompting replacing barrier film is received and enclosed roller (4), returns to step 4, until the saponification of all smee cell barrier films is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219438.9A CN104078690B (en) | 2014-05-22 | 2014-05-22 | Battery saponification automatic processing equipment and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219438.9A CN104078690B (en) | 2014-05-22 | 2014-05-22 | Battery saponification automatic processing equipment and control method thereof |
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| Publication Number | Publication Date |
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| CN104078690A true CN104078690A (en) | 2014-10-01 |
| CN104078690B CN104078690B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410219438.9A Expired - Fee Related CN104078690B (en) | 2014-05-22 | 2014-05-22 | Battery saponification automatic processing equipment and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860122A (en) * | 2016-06-07 | 2016-08-17 | 广元欣源设备制造有限公司 | Saponification system for cellulose triacetate membranes |
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| US20100248002A1 (en) * | 2007-12-31 | 2010-09-30 | Kotaro Takita | Microporous Multilayer Membrane, System And Process For Producing Such Membrane, And The Use Of Such Membrane |
| CN103137929A (en) * | 2011-11-24 | 2013-06-05 | 比亚迪股份有限公司 | Lithium ion battery diaphragm, preparation method of the lithium ion battery diaphragm, and lithium ion battery containing the lithium ion battery diaphragm |
| CN103319747A (en) * | 2013-07-16 | 2013-09-25 | 莱州联友金浩新型材料有限公司 | Grafting treatment apparatus and grafting treatment method for battery diaphragm material |
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2014
- 2014-05-22 CN CN201410219438.9A patent/CN104078690B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100248002A1 (en) * | 2007-12-31 | 2010-09-30 | Kotaro Takita | Microporous Multilayer Membrane, System And Process For Producing Such Membrane, And The Use Of Such Membrane |
| CN103137929A (en) * | 2011-11-24 | 2013-06-05 | 比亚迪股份有限公司 | Lithium ion battery diaphragm, preparation method of the lithium ion battery diaphragm, and lithium ion battery containing the lithium ion battery diaphragm |
| CN103319747A (en) * | 2013-07-16 | 2013-09-25 | 莱州联友金浩新型材料有限公司 | Grafting treatment apparatus and grafting treatment method for battery diaphragm material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105860122A (en) * | 2016-06-07 | 2016-08-17 | 广元欣源设备制造有限公司 | Saponification system for cellulose triacetate membranes |
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