CN203680966U - Lithium battery diaphragm compounding device - Google Patents
Lithium battery diaphragm compounding device Download PDFInfo
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- CN203680966U CN203680966U CN201420031771.2U CN201420031771U CN203680966U CN 203680966 U CN203680966 U CN 203680966U CN 201420031771 U CN201420031771 U CN 201420031771U CN 203680966 U CN203680966 U CN 203680966U
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- roll
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- lithium battery
- battery diaphragm
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 35
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000013329 compounding Methods 0.000 title abstract description 6
- 238000007731 hot pressing Methods 0.000 claims abstract description 49
- 238000005096 rolling process Methods 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims description 28
- 238000010030 laminating Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012528 membrane Substances 0.000 abstract description 4
- 238000009998 heat setting Methods 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 description 14
- 230000004888 barrier function Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000037332 pore function Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
The utility model discloses a lithium battery diaphragm compounding device which comprises an unwinding device, a rolling device and a rewinding device, wherein the unwinding device comprises at least two unwinding rollers, an unwinding guide roller and a direction guide roller; the unwinding guide roller is used for guiding a lithium battery diaphragm to the rolling device; the direction guide roller is used for changing the membrane guide direction; the rolling device comprises a preheating roller, a hot-pressing roller, a heat setting roller and a cooling roller; the preheating roller, the hot-pressing roller, the heat setting roller and the cooling roller are sequentially arranged in parallel. According to the lithium battery diaphragm compounding device, the preheating roller, the hot-pressing roller, the heat setting roller and the cooling roller are arranged in the rolling device, uniform rolling and compounding of multiple layers of films can be well realized, the adhesion between the films can be enhanced, and the compounding effect is better.
Description
Technical field
The utility model relates to a kind of lithium battery diaphragm field of compounding, is specifically related to a kind of lithium battery diaphragm set composite.
Background technology
Lithium ion battery has the feature of high-energy-density, long circulation life, memory-less effect, have again safety, reliable and can fast charging and discharging etc. advantage, therefore become in recent years the focus of novel power supply technical research.In the structure of lithium battery, barrier film is one of crucial interior layer assembly.The quality of membrane properties has determined interfacial structure, the internal resistance etc. of battery, directly affects the characteristics such as capacity, cycle-index and the security performance of battery, and the barrier film that therefore obtains excellent performance is most important.The Main Function of barrier film is that the positive and negative electrode of battery is separated, and prevents the two poles of the earth contacts and short circuit has the function that can make electrolyte ion pass through, and can also, in the time that battery is overheated, intercept the electric current conduction in battery by closed pore function.Barrier film material is nonconducting, and its physicochemical properties have a great impact the performance of battery.The kind difference of battery, the barrier film of employing is also different.The lithium battery of existing market is mainly take polyethylene, polypropylene as main polyalkene diaphragm, comprises individual layer PE, individual layer PP, three layers of PP/PE/PP composite membrane.Existing polyalkene diaphragm production technology can be divided into two large classes according to dry method and wet method, and dry method can be subdivided into again simple tension technique and stretch processes simultaneously.
Along with the development of lithium ion battery industry, the requirement of diaphragm material increases considerably.And only have in the world a few countries such as Japan, the U.S. to have production technology and the corresponding large-scale production of lithium ion battery polymer barrier film; China is starting late aspect the research and development of lithium ion battery separator; though barrier film is in the existing production of China; but indices does not reach external level, even do not reach the requirement of use.As a complete unit, there is pore size in the lithium battery diaphragm of at present domestic production, it is all comparatively inhomogeneous to distribute, and the shortcoming such as less stable.
At present, in order to obtain having comparatively the lithium battery diaphragm of micropore uniformly, way is three layers or plural layers to be carried out compound conventionally, obtains thicker lithium ion battery separator, can obtain like this lithium battery diaphragm of excellent combination property.
Plural layers carry out compound tense, need that specific complex machine unreels, roll-in, rolling.Existing lithium battery diaphragm combination machine has been realized the compound of laminated diaphragm, overcome lithium battery diaphragm compound tense easily wrinkling, the shortcoming of bubble, but current lithium battery diaphragm set composite is all compound by directly carrying out roll-in after the multilayer film of rewinding, the compound three first layers of roll-in or multilayer film do not pass through even preheating, after roll-in is compound, do not pass through thermal finalization process yet, the adhesion strength of the multilayer complex films generating is like this not high, composite effect is bad, and the MULTILAYER COMPOSITE barrier film obtaining does not reach the requirement of lithium battery diaphragm.
Utility model content
The purpose of this utility model is that the adhesive strength in order to overcome existing roll-in composite lithium battery membrane is not high, the problem that composite effect is bad, the utility model provides a kind of lithium battery diaphragm set composite, three layers or multilayer film are passed through respectively to unwinding device, the preheat roll of rolling device, hot-pressing roller, setting roller, chill roll closes wrap-up, the even roll-in that can be good at realizing three layers or plural layers is compound, pressure roller is by the size of three layers of hydraulic means controls or multilayer film roll-in pressure, can provide larger pressure for three layers or multilayer film compound, guarantee that the adhesion strength between film is enough large.
In order to reach above-mentioned technique effect, the utility model is taked following technical scheme:
A kind of lithium battery diaphragm set composite, comprising: unwinding device, rolling device and wrap-up;
Described unwinding device comprises at least two let off roll, unreels deflector roll and direction deflector roll, and the described deflector roll that unreels is directed to rolling device for lithium battery diaphragm, the direction that described direction deflector roll imports for changing film;
Described rolling device comprises preheat roll, hot-pressing roller, setting roller and chill roll, and described preheat roll, hot-pressing roller, setting roller and chill roll successively class be arranged in parallel.
Further technical scheme is: described wrap-up comprise wind-up roll and be arranged on rolling device and wind-up roll between rolling deflector roll, described rolling deflector roll is connected with the second deflector roll motor, for driving rolling deflector roll.
Further technical scheme is: the described deflector roll that unreels is connected with the first deflector roll motor, unreels deflector roll for driving.
Further technical scheme is: described let off roll is connected with servomotor respectively with wind-up roll, is respectively used to drive let off roll and wind-up roll, can control the Tensity size of film by servomotor.
Further technical scheme is: described preheat roll is 3～7 groups, and each group preheat roll comprises preheating fixed roll and pre-hot-pressing roller, and described preheating fixed roll and pre-hot-pressing roller are by gear synchronous control; Described pre-hot-pressing roller is connected with the first air float constant pressure device, makes pre-hot-pressing roller and the laminating of preheating fixed roll for spacing.Preheat roll is connected with hotline heater by swivel joint pipeline, and preheat temperature is by hotline heater control.
Further technical scheme is: described hot-pressing roller is 1～3 group, and each group hot-pressing roller comprises hot pressing fixed roll and hot pressing pressure roller; Described hot pressing pressure roller is connected with hydraulic means, for controlling roll-in composite pressure.
Further technical scheme is: described setting roller is 3～5 groups, and each group setting roller comprises thermal finalization fixed roll and thermal finalization pressure roller; Described thermal finalization pressure roller is connected with the second air float constant pressure device, makes thermal finalization pressure roller and the laminating of thermal finalization fixed roll for spacing.Described thermal finalization fixed roll and thermal finalization pressure roller are by gear synchronous control.
Further technical scheme is: described chill roll is 1～3 group, and each group chill roll comprises cooling fixed roll and cooling pressure roller.
Further technical scheme is: described preheat roll, hot-pressing roller, setting roller and chill roll are connected with drive motors by universal coupling respectively.
The utility model compared with prior art, has following beneficial effect:
(1) in the rolling device of this device, be provided with preheat roll, hot-pressing roller, setting roller and chill roll, the even roll-in that can be good at realizing plural layers is compound, the cementability between can enhanced film, and composite effect is better.
(2) realize continuous transmission feeding by unwinding device and wrap-up, the continous-stable of being convenient to film is carried, and has greatly improved quality and the efficiency of film joint product.
(3) preheat roll can be by the gap of air supporting control preheating fixed roll and pre-hot-pressing roller, hot-pressing roller can be by hydraulic means control roll-in composite pressure, and setting roller can be by air float constant pressure device control thermal finalization pressure roller and the laminating of thermal finalization fixed roll, can guarantee that compound tense provides larger pressure, guarantee that the adhesion strength between film is enough large, and can regulate at three layers or multilayer film compound tense roll-in pressure, make the stressed size of three layers or multilayer film reach certain limit, thereby adaptation unlike material, the rete of size, three layers or multilayer film pass through preheat roll, after hot-pressing roller and setting roller are compound, make it to be bonded together securely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model lithium battery diaphragm set composite;
Fig. 2 is the side structure schematic diagram of the rolling device of the utility model lithium battery diaphragm set composite;
Wherein: 1-unwinding device; 2-rolling device; 21-preheat roll; 211-preheating fixed roll; 212-pre-hot-pressing roller; 22-hot-pressing roller; 221-hot pressing fixed roll; 222-hot pressing pressure roller; 23-setting roller; 231-thermal finalization fixed roll; 232-thermal finalization pressure roller; 24-chill roll; 241-cooling fixed roll; 242-cooling pressure roller; 3-wrap-up; 4-let off roll; 5-direction deflector roll; 6-wind-up roll; The 7-the first deflector roll motor; The 8-the second deflector roll motor; 9-servomotor; The 10-the first air float constant pressure device; 11-hydraulic means; The 12-the second air float constant pressure device; 13-unreel deflector roll; 14-rolling deflector roll; 19-swivel joint pipeline; 20-universal coupling.
The specific embodiment
Below in conjunction with accompanying drawing of the present utility model and embodiment of the present utility model, the utility model is further explained and explanation, to make the technical solution of the utility model more clear.
Fig. 1 and Fig. 2 show respectively the structural representation of utility model lithium battery diaphragm set composite and the side structure schematic diagram of rolling device, and in conjunction with Fig. 1 and Fig. 2, a kind of lithium battery diaphragm set composite, comprising: unwinding device 1, rolling device 2 and wrap-up 3;
Described unwinding device 1 comprises at least two let off roll 4, unreels deflector roll 13 and direction deflector roll 5, and the described deflector roll 13 that unreels is directed to rolling device 2 for lithium battery diaphragm, the direction that described direction deflector roll 5 imports for changing film;
Described rolling device 2 comprises preheat roll 21, hot-pressing roller 22, setting roller 23 and chill roll 24, and described preheat roll 21, hot-pressing roller 22, setting roller 23 and chill roll 24 successively class be arranged in parallel.
According to an embodiment of the present utility model, described wrap-up 3 comprise wind-up roll 6 and be arranged on rolling device 2 and wind-up roll 6 between rolling deflector roll 14, described rolling deflector roll 14 is connected with the second deflector roll motor 8, for driving rolling deflector roll 14.
According to an embodiment of the present utility model, the described deflector roll 13 that unreels is connected with the first deflector roll motor 7, unreels deflector roll 13 for driving.
According to an embodiment of the present utility model, described let off roll 4 is connected with servomotor 9 respectively with wind-up roll 6, is respectively used to drive let off roll 4 and wind-up roll 6, can control the Tensity size of film by servomotor.
According to an embodiment of the present utility model, described preheat roll 21 is 3～7 groups, and each group preheat roll 21 comprises preheating fixed roll 211 and pre-hot-pressing roller 212, and described preheating fixed roll 211 and pre-hot-pressing roller 212 are by gear synchronous control; Described pre-hot-pressing roller 212 is connected with the first air float constant pressure device 10, for spacing, pre-hot-pressing roller 212 is fitted with preheating fixed roll 211.Preheat roll is connected with hotline heater by swivel joint pipeline 19, and preheat temperature is by hotline heater control.By preheat roll 21, plural layers are carried out to even preheating.
According to an embodiment of the present utility model, described hot-pressing roller 22 is 1～3 group, and each group hot-pressing roller 22 comprises hot pressing fixed roll 221 and hot pressing pressure roller 222; Described hot pressing pressure roller 222 is connected with hydraulic means 11, for controlling roll-in composite pressure.By hot-pressing roller 22, plural layers are carried out to roll-in compound.
According to an embodiment of the present utility model, described setting roller 23 is 3～5 groups, and each group setting roller 23 comprises thermal finalization fixed roll 231 and thermal finalization pressure roller 232; Described thermal finalization pressure roller 232 is connected with the second air float constant pressure device 12, for spacing, thermal finalization pressure roller 232 and thermal finalization fixed roll 231 is fitted.Described thermal finalization fixed roll and thermal finalization pressure roller are by gear synchronous control.By setting roller 23, plural layers are carried out to thermal finalization.
According to an embodiment of the present utility model, described chill roll 24 is 1～3 group, and each group chill roll 24 comprises cooling fixed roll 241 and cooling pressure roller 242.Carry out cooling by chill roll 24 to plural layers.
According to an embodiment of the present utility model, described preheat roll 21, hot-pressing roller 22, setting roller 23 and chill roll 24 are connected with drive motors by universal coupling 20 respectively.
" embodiment ", " another embodiment ", " embodiment " etc. that spoken of in this manual, refer in conjunction with specific features, structure or the feature of this embodiment description and be included at least one embodiment of the application's generality description.In description, multiple local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with arbitrary embodiment, what advocate is to realize this feature, structure or feature in conjunction with other embodiment also to drop in scope of the present utility model.
Although the utility model is described with reference to multiple explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (9)
1. a lithium battery diaphragm set composite, is characterized in that comprising: unwinding device (1), rolling device (2) and wrap-up (3);
Described unwinding device (1) comprises at least two let off roll (4), unreels deflector roll (13) and direction deflector roll (5), the described deflector roll (13) that unreels is directed to rolling device (2) for lithium battery diaphragm, the direction that described direction deflector roll (5) imports for changing film;
Described rolling device (2) comprises preheat roll (21), hot-pressing roller (22), setting roller (23) and chill roll (24), and described preheat roll (21), hot-pressing roller (22), setting roller (23) and chill roll (24) successively class be arranged in parallel.
2. lithium battery diaphragm set composite according to claim 1, it is characterized in that described wrap-up (3) comprise wind-up roll (6) and be arranged on rolling device (2) and wind-up roll (6) between rolling deflector roll (14), described rolling deflector roll (14) is connected with the second deflector roll motor (8), for driving rolling deflector roll (14).
3. lithium battery diaphragm set composite according to claim 1, is characterized in that the described deflector roll (13) that unreels is connected with the first deflector roll motor (7), unreels deflector roll (13) for driving.
4. lithium battery diaphragm set composite according to claim 2, is characterized in that described let off roll (4) is connected with servomotor (9) respectively with wind-up roll (6), is respectively used to drive let off roll (4) and wind-up roll (6).
5. lithium battery diaphragm set composite according to claim 1, it is characterized in that described preheat roll (21) is 3～7 groups, each group preheat roll (21) comprises preheating fixed roll (211) and pre-hot-pressing roller (212), and described preheating fixed roll (211) and pre-hot-pressing roller (212) are by gear synchronous control; Described pre-hot-pressing roller (212) is connected with the first air float constant pressure device (10), makes pre-hot-pressing roller (212) and preheating fixed roll (211) laminating for spacing.
6. lithium battery diaphragm set composite according to claim 1, is characterized in that described hot-pressing roller (22) is 1～3 group, and each group hot-pressing roller (22) comprises hot pressing fixed roll (221) and hot pressing pressure roller (222); Described hot pressing pressure roller (222) is connected with hydraulic means (11), for controlling roll-in composite pressure.
7. lithium battery diaphragm set composite according to claim 1, is characterized in that described setting roller (23) is 3～5 groups, and each group setting roller (23) comprises thermal finalization fixed roll (231) and thermal finalization pressure roller (232); Described thermal finalization pressure roller (232) is connected with the second air float constant pressure device (12), makes thermal finalization pressure roller (232) and thermal finalization fixed roll (231) laminating for spacing.
8. lithium battery diaphragm set composite according to claim 1, is characterized in that described chill roll (24) is 1～3 group, and each group chill roll (24) comprises cooling fixed roll (241) and cooling pressure roller (242).
9. lithium battery diaphragm set composite according to claim 1, is characterized in that described preheat roll (21), hot-pressing roller (22), setting roller (23) and chill roll (24) are connected with drive motors by universal coupling (20) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031771.2U CN203680966U (en) | 2014-01-17 | 2014-01-17 | Lithium battery diaphragm compounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420031771.2U CN203680966U (en) | 2014-01-17 | 2014-01-17 | Lithium battery diaphragm compounding device |
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| Publication Number | Publication Date |
|---|---|
| CN203680966U true CN203680966U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420031771.2U Expired - Lifetime CN203680966U (en) | 2014-01-17 | 2014-01-17 | Lithium battery diaphragm compounding device |
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| CN (1) | CN203680966U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753936A (en) * | 2014-01-17 | 2014-04-30 | 成都芝田高分子材料有限公司 | Lithium battery diaphragm compound device and compound method thereof |
| CN105502055A (en) * | 2015-12-03 | 2016-04-20 | 太仓市中厚机械有限公司 | Precise rewinding machine |
| CN108336280A (en) * | 2018-01-09 | 2018-07-27 | 深圳中兴创新材料技术有限公司 | A kind of composite diaphragm and its preparation method and application |
| CN110993856A (en) * | 2019-11-18 | 2020-04-10 | 河北金力新能源科技股份有限公司 | Device for preparing double-layer composite diaphragm of lithium ion battery and using method thereof |
| CN113733573A (en) * | 2021-09-15 | 2021-12-03 | 南京首塑特种工程塑料制品有限公司 | PI flexible sheet polymer processing device and processing technology thereof |
| CN115230244A (en) * | 2022-05-11 | 2022-10-25 | 株洲时代华先材料科技有限公司 | Roller type hot-pressing device and hot-pressing process thereof |
| CN115312965A (en) * | 2021-05-08 | 2022-11-08 | 江苏星源新材料科技有限公司 | Composite diaphragm and preparation method thereof |
-
2014
- 2014-01-17 CN CN201420031771.2U patent/CN203680966U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753936A (en) * | 2014-01-17 | 2014-04-30 | 成都芝田高分子材料有限公司 | Lithium battery diaphragm compound device and compound method thereof |
| CN105502055A (en) * | 2015-12-03 | 2016-04-20 | 太仓市中厚机械有限公司 | Precise rewinding machine |
| CN108336280A (en) * | 2018-01-09 | 2018-07-27 | 深圳中兴创新材料技术有限公司 | A kind of composite diaphragm and its preparation method and application |
| CN110993856A (en) * | 2019-11-18 | 2020-04-10 | 河北金力新能源科技股份有限公司 | Device for preparing double-layer composite diaphragm of lithium ion battery and using method thereof |
| CN110993856B (en) * | 2019-11-18 | 2022-03-11 | 河北金力新能源科技股份有限公司 | Device for preparing double-layer composite diaphragm of lithium ion battery and using method thereof |
| CN115312965A (en) * | 2021-05-08 | 2022-11-08 | 江苏星源新材料科技有限公司 | Composite diaphragm and preparation method thereof |
| CN113733573A (en) * | 2021-09-15 | 2021-12-03 | 南京首塑特种工程塑料制品有限公司 | PI flexible sheet polymer processing device and processing technology thereof |
| CN115230244A (en) * | 2022-05-11 | 2022-10-25 | 株洲时代华先材料科技有限公司 | Roller type hot-pressing device and hot-pressing process thereof |
| CN115230244B (en) * | 2022-05-11 | 2023-10-13 | 株洲时代华先材料科技有限公司 | Roller type hot pressing device and hot pressing process thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20140702 |