CN110963334A - Method for rolling battery diaphragm - Google Patents
Method for rolling battery diaphragm Download PDFInfo
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- CN110963334A CN110963334A CN201911410559.0A CN201911410559A CN110963334A CN 110963334 A CN110963334 A CN 110963334A CN 201911410559 A CN201911410559 A CN 201911410559A CN 110963334 A CN110963334 A CN 110963334A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
- B65H23/1955—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations and controlling web tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1133—Size of webs
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- Winding Of Webs (AREA)
- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
The application discloses a method for rolling a battery diaphragm. The battery diaphragm rolling method comprises the step of adjusting rolling tension according to the size of a rolling diameter when the battery diaphragm is rolled. The utility model provides a battery diaphragm rolling method to the different periods of rolling, carries out the tensile adjustment of rolling according to a roll footpath size promptly, strengthens rolling tension along with a roll footpath increase for the winding mechanism operation is more stable, has reduced pipe end wrinkle, violence muscle, fold, synovial membrane scheduling problem.
Description
Technical Field
The application relates to the technical field of battery diaphragm production, in particular to a method for winding a battery diaphragm.
Background
With the research and development of lithium ion batteries, the lithium ion batteries are widely applied to various industries and fields such as digital products, electric bicycles, electric motorcycles, electric automobiles, electric energy storage, communication energy storage and the like. The battery diaphragm is an important component of the lithium ion battery, has the function of separating the positive electrode and the negative electrode of the battery, prevents the two electrodes from contacting and short-circuiting, and is one of the key inner layer components of the battery. The performance of the diaphragm determines the interface structure, internal resistance and the like of the battery, directly influences the capacity, circulation, safety performance and other characteristics of the battery, and the diaphragm with excellent performance plays an important role in improving the comprehensive performance of the lithium ion battery.
After the production of the battery diaphragm or the base film is completed, the battery diaphragm or the base film is usually wound into a roll by adopting a winding device, and the roll is stored for subsequent production and use. However, in the practical production process, various problems such as wrinkles, ribs, folds, slip films and the like exist on the tube bottom basically when the battery separator is rolled and stored. This not only affects the quality and performance of the battery separator, but also, in the case of severe requirements, causes a great deal of material loss, and affects the production efficiency and quality.
Disclosure of Invention
The utility model aims at providing a new battery diaphragm rolling method that can solve battery diaphragm rolling wrinkle, violence muscle, fold, synovial membrane scheduling problem.
In order to achieve the purpose, the following technical scheme is adopted in the application:
one aspect of the application discloses a method for rolling a battery diaphragm, which comprises the step of adjusting rolling tension according to the size of a roll diameter when the battery diaphragm is rolled.
It should be noted that, the key point of the present application lies in research and discovery that in the existing winding manner, since the winding tension is invariable, problems such as wrinkles, rib breaking, wrinkles, and sliding films at the tube bottom may result, and the present application creatively proposes to adjust the winding tension according to the size of the winding diameter, that is, to gradually increase the winding tension along with the increase of the winding diameter, so that the winding mechanism operates more stably, and the problems such as wrinkles, rib breaking, wrinkles, and sliding films at the tube bottom are significantly reduced.
It can be understood that the key point of the present application is to creatively provide to adjust the winding tension according to the size of the roll diameter, that is, gradually increase the winding tension, and how much winding tension is specifically adopted or the specific gradually increasing degree may be determined according to the specific film roll, for example, for a larger film roll, the initial winding tension is larger, and the subsequent increasing degree may also be larger, and is not specifically limited herein.
It should be noted that the key point of the present application is to creatively provide to adjust the winding tension according to the size of the roll diameter, and the specific adjustment mode may be determined according to the production requirement or production condition, for example, the winding tension may be divided into a plurality of stages according to the size of the roll diameter, and each stage adopts a fixed winding tension; an automatic control program can also be adopted to enhance the winding tension in real time according to the size of the winding diameter, namely the winding tension is not enhanced in a step shape but gradually and continuously enhanced in a certain slope.
Preferably, the rolling tension is adjusted, specifically, the rolling of the battery diaphragm is performed by adopting the rolling tension 1-2 times of the initial rolling tension, and the rolling tension is gradually increased along with the increase of the roll diameter.
It should be noted that, generally, the winding effect of the present application can be achieved when the winding tension is adjusted within a range of 1-2 times of the initial winding tension, for example, in an implementation manner of the present application, the winding tension is gradually adjusted within 1.26 times of the initial winding tension; too large rolling tension is not beneficial to stress release of the battery diaphragm at the later stage.
Preferably, a turret winder is used for winding the battery diaphragm.
It should be noted that the turret type winding machine is adopted to replace a common central shaft type winding machine, so that the winding tension of the winding method is more accurately controlled, and the winding method is more suitable for winding the dry-method multilayer battery diaphragm.
Preferably, in the method of the present application, the winding tension is adjusted according to the size of the winding diameter, and specifically, after the battery separator is wound by using the initial winding tension, the winding tension is gradually increased to wind the battery separator in a stage of increasing the winding diameter by 50 mm.
It should be noted that gradually increasing the winding tension at a stage every time the winding diameter is increased by 50mm is only a winding manner specifically adopted in an implementation manner of the present application, and it is not excluded that the winding tension can be adjusted according to an actual winding condition.
Preferably, in the method of the present application, the winding tension is adjusted according to the size of the winding diameter, specifically, the method includes dividing into 3-20 stages according to the size of the winding diameter, and each stage respectively uses different winding tensions to wind the battery diaphragm. Similarly, the winding tension of 1-2 times of the initial winding tension is adopted in each stage to wind the battery diaphragm, and the winding tension is gradually increased along with the increase of the winding diameter.
It should be noted that, it is a relatively easy way to adjust the winding tension in stages according to the winding diameter, and the winding diameter is detected in real time, and when the winding diameter reaches a certain set value, the winding tension is increased. In one implementation of the present application, the whole roll can be divided into at most 20 stages, and each stage adopts a corresponding rolling tension force.
Preferably, in the method, the winding tension is adjusted according to the size of the winding diameter, and the method specifically comprises the steps of winding the battery diaphragm by adopting different winding tensions in three stages, namely a winding shaft tube bottom stage, a diaphragm winding middle stage and a diaphragm winding surface stage according to the size of the winding diameter.
It can be understood that the three stages are divided according to the size of the roll diameter, which is a relatively rough way specifically adopted in one implementation of the present application, and the corresponding effects of solving the problems of the bottom wrinkles, the violent ribs, the wrinkles, the sliding films and the like are also weak.
Preferably, in the method of the present application, the winding tension is adjusted according to the size of the winding diameter, specifically including 10 stages according to the size of the winding diameter, and each stage respectively uses different winding tensions to wind the battery diaphragm.
Preferably, the 10 stages are respectively that the coil diameter is less than 185mm as the first stage, the coil diameter is 185-235mm as the second stage, the coil diameter is 235-285mm as the third stage, the coil diameter is 285-335mm as the fourth stage, the coil diameter is 335-385mm as the fifth stage, the coil diameter is 385-435mm as the sixth stage, the coil diameter is 435-485mm as the seventh stage, the coil diameter is 485-535mm as the eighth stage, the coil diameter is 535-585mm as the ninth stage, and the coil diameter is greater than or equal to 585mm as the tenth stage.
Preferably, the winding tension of 10 stages is, in order, an initial winding tension, 1.1 times of the initial winding tension, 1.13 times of the initial winding tension, 1.15 times of the initial winding tension, 1.2 times of the initial winding tension, 1.21 times of the initial winding tension, 1.23 times of the initial winding tension, 1.24 times of the initial winding tension, 1.25 times of the initial winding tension, and 1.26 times of the initial winding tension.
Preferably, the initial winding tension is 13.5N.
It should be noted that the winding diameter is divided into 10 stages according to the size of the winding diameter, the winding diameter design, the winding tension design, the initial winding tension 13.5N, and the like of each stage are design schemes specifically adopted in an implementation manner of the present application, and according to the difference of the adopted specific winding systems, improvement can be performed on the basis of the design schemes of the present application, or appropriate segmentation and winding tension are designed based on the inventive idea of the present application, which is not specifically limited herein.
Due to the adoption of the technical scheme, the beneficial effects of the application are as follows:
the utility model provides a battery diaphragm rolling method to the different periods of rolling, carries out the tensile adjustment of rolling according to a roll footpath size promptly, strengthens rolling tension along with a roll footpath increase for the winding mechanism operation is more stable, has reduced pipe end wrinkle, violence muscle, fold, synovial membrane scheduling problem.
Drawings
Fig. 1 is a trend chart of winding tension actually operated in the embodiment of the present application.
Detailed Description
The research of the application discovers that various problems of wrinkles, rib, folds, sliding films and the like exist at the bottom of the tube in the existing rolling mode; in the preparation process of the battery diaphragm, the quality of the winding and forming of the battery diaphragm directly influences the yield of a finished product, and the magnitude of the winding force is very important for the stress release of the diaphragm at the later stage, so that the control of the winding tension has a great improvement direction on the quality of the product. In addition, the inventor thinks that the winding tension required in different periods is different in the winding process of the battery diaphragm, and the existing winding mode always adopts the uniform winding tension and is a key factor for causing the problems of pipe bottom wrinkles, rib bustling, folds, sliding films and the like.
Based on the research and the recognition, the application creatively provides a novel battery diaphragm rolling method, namely, when the battery diaphragm is rolled, the rolling tension is adjusted according to the size of the roll diameter. Through the rolling method of this application, the tension that is fit for the diaphragm moves under the condition of different book footpaths, pipe bottom wrinkle, violence muscle, fold, synovial membrane can be fine management and control in the diaphragm preparation, has certain air content between every layer simultaneously, has reserved the space for the stress release in battery diaphragm later stage.
The present application is described in further detail below with reference to specific embodiments and the attached drawings. The following examples are intended to be illustrative of the present application only and should not be construed as limiting the present application.
Examples
The winding machine is adopted to wind the battery diaphragm of the lithium battery. Before the winding method is improved, winding is carried out according to the conventional winding tension of 13.5N, and the battery diaphragm with the winding diameter of 600mm is obtained. The observation of the coiled battery diaphragm shows that the problems of pipe bottom wrinkles, rib, folds or slip films exist in most diaphragm coils, and are almost difficult to avoid.
To this end, the present example writes a PLC program, adjusts the winding tension according to the size of the winding diameter, specifically, according to the size of the winding diameter, the winding process is divided into 10 stages, and each stage respectively uses different winding tensions to wind the battery diaphragm; specifically, the 10 stages are respectively that the coil diameter is less than 185mm as the first stage, the coil diameter is 185-235mm as the second stage, the coil diameter is 235-285mm as the third stage, the coil diameter is 285-335mm as the fourth stage, the coil diameter is 335-385mm as the fifth stage, the coil diameter is 385-435mm as the sixth stage, the coil diameter is 435-485mm as the seventh stage, the coil diameter is 485-535mm as the eighth stage, the coil diameter is 535-585mm as the ninth stage, and the coil diameter is greater than or equal to 585mm as the tenth stage.
The winding tension of the 10 stages is, in order, initial winding tension, 1.1 times of initial winding tension, 1.13 times of initial winding tension, 1.15 times of initial winding tension, 1.2 times of initial winding tension, 1.21 times of initial winding tension, 1.23 times of initial winding tension, 1.24 times of initial winding tension, 1.25 times of initial winding tension and 1.26 times of initial winding tension; wherein the initial winding tension is 13.5N. The stages and the corresponding take-up tensions are detailed in table 1. And a winding tension trend chart controlled by a PLC program is shown in figure 1.
TABLE 1 winding diameter and tension design form
In table 1, the "tension setting coefficient" refers to a multiple of the initial winding tension, that is, the winding tension actually running is adjusted according to the multiple during PLC program control.
The battery diaphragm is rolled according to the rolling method, the rolled battery diaphragm with the rolling diameter of 600mm of 1000 rolls is statistically analyzed in the embodiment, and the defect conditions of wrinkles, rib, folds, sliding films and the like at the bottom of the tube are observed; compared statistics analyzes the defect condition of the battery diaphragm which is rolled into a roll by 1000 in the same specification according to the condition of a conventional rolling mode; the statistical results are shown in table 2.
TABLE 2 Damage statistics for wound membrane rolls before and after improvement
| Type of defect | Before improvement | After improvement |
| Pipe bottom wrinkle | 0.6％ | 0.1％ |
| Rib | 2％ | 1％ |
| Fold of | 1.3％ | 0.5％ |
| Slip film | 3％ | 0％ |
In table 2, "before modification" means percentage of the separator roll of the corresponding defect type generated by winding with the winding tension of 13.5N before modification, and "after modification" means percentage of the separator roll of the corresponding defect type generated by winding with the winding method.
The results in table 2 show that the winding method of the embodiment can effectively control the problems of pipe bottom wrinkles, violent ribs, wrinkles, sliding films and the like, improves the winding quality, reduces the influence on the quality of the battery diaphragm caused by winding, and also reduces the material waste caused by the winding.
The foregoing is a more detailed description of the present application in connection with specific embodiments thereof, and it is not intended that the present application be limited to the specific embodiments thereof. It will be apparent to those skilled in the art from this disclosure that many more simple derivations or substitutions can be made without departing from the spirit of the disclosure.
Claims (10)
1. A method for rolling a battery diaphragm is characterized by comprising the following steps: the method comprises the step of adjusting the winding tension according to the winding diameter when the battery diaphragm is wound.
2. The method of claim 1, wherein: the method for adjusting the winding tension specifically comprises the steps of winding the battery diaphragm by adopting the winding tension 1-2 times of the initial winding tension, and gradually increasing the winding tension along with the increase of the winding diameter.
3. The method of claim 1, wherein: and winding the battery diaphragm by adopting a turret type winding machine.
4. A method according to any one of claims 1-3, characterized in that: the winding tension is adjusted according to the size of the winding diameter, and the winding tension is adjusted according to the winding diameter, specifically, after the battery diaphragm is wound by adopting the initial winding tension, the winding tension is gradually increased to wind the battery diaphragm according to the winding diameter which is increased by 50 mm.
5. A method according to any one of claims 1-3, characterized in that: the method comprises the following steps of adjusting the winding tension according to the size of the winding diameter, and specifically comprises the steps of dividing the winding diameter into 3-20 stages, wherein each stage respectively adopts different winding tensions to wind the battery diaphragm.
6. A method according to any one of claims 1-3, characterized in that: the winding tension is adjusted according to the size of the winding diameter, and the winding tension adjusting method specifically comprises the steps of dividing the winding shaft tube bottom stage, the middle diaphragm winding stage and the surface diaphragm winding stage according to the size of the winding diameter, and respectively winding the battery diaphragm by adopting different winding tensions in the three stages.
7. A method according to any one of claims 1-3, characterized in that: the winding tension is adjusted according to the size of the winding diameter, and the method specifically comprises the steps of dividing into 10 stages according to the size of the winding diameter, and winding the battery diaphragm by adopting different winding tensions in each stage respectively.
8. The method of claim 7, wherein: the 10 stages are respectively that the diameter of the coil is less than 185mm, the diameter of the coil is 185-235mm, the diameter of the coil is 235-285mm, the diameter of the coil is 285-335mm, the diameter of the coil is 335-385mm, the diameter of the coil is 385-435mm, the diameter of the coil is 435-485mm, the diameter of the coil is seventh, the diameter of the coil is 485-535mm, the diameter of the coil is eighth, the diameter of the coil is 535-585mm, and the diameter of the coil is greater than or equal to 585mm, and the diameter of the coil is tenth.
9. The method of claim 8, wherein: the winding tension of the 10 stages sequentially comprises initial winding tension, 1.1-time initial winding tension, 1.13-time initial winding tension, 1.15-time initial winding tension, 1.2-time initial winding tension, 1.21-time initial winding tension, 1.23-time initial winding tension, 1.24-time initial winding tension, 1.25-time initial winding tension and 1.26-time initial winding tension.
10. The method of claim 9, wherein: the initial winding tension is 13.5N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410559.0A CN110963334A (en) | 2019-12-31 | 2019-12-31 | Method for rolling battery diaphragm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410559.0A CN110963334A (en) | 2019-12-31 | 2019-12-31 | Method for rolling battery diaphragm |
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| CN110963334A true CN110963334A (en) | 2020-04-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115064755A (en) * | 2022-08-16 | 2022-09-16 | 江苏时代新能源科技有限公司 | Winding method and winding system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798029A (en) * | 2009-11-09 | 2010-08-11 | 东莞市飞新达精密机械科技有限公司 | Automatic rewinding device |
| CN201903793U (en) * | 2010-09-30 | 2011-07-20 | 武汉钢铁(集团)公司 | Tension control device for strip steel processing line coiling region |
| CN102167246A (en) * | 2010-12-31 | 2011-08-31 | 东莞市利帆精密机械制造厂 | Film stripping and rewinding machine |
| CN202464879U (en) * | 2012-01-17 | 2012-10-03 | 江苏领航材料科技有限公司 | Casting and rolling improvement device for lithium battery diaphragm production line |
| CN102923511A (en) * | 2012-10-31 | 2013-02-13 | 上海海泰克***工程有限公司 | Winding tension control system |
| CN203636877U (en) * | 2013-12-27 | 2014-06-11 | 天津市天塑滨海氟塑料制品有限公司 | Numerical-control rotary-cut lathe used for producing polytetrafluoroethylene turning film |
| CN105173828A (en) * | 2015-08-11 | 2015-12-23 | 张家港市兰航机械有限公司 | Traction winding machine |
| CN207375435U (en) * | 2017-09-28 | 2018-05-18 | 汕头市远东轻化装备有限公司 | A kind of double-station winding tension control device |
| CN108190586A (en) * | 2017-12-14 | 2018-06-22 | 合肥乐凯科技产业有限公司 | A kind of improvement winder winding corrugated method of thin film bottoming |
| CN108864627A (en) * | 2018-07-02 | 2018-11-23 | 重庆云天化瀚恩新材料开发有限公司 | A kind of polyvinyl alcohol film and preparation method thereof |
| CN208326839U (en) * | 2018-06-15 | 2019-01-04 | 安徽金日包装有限公司 | A kind of PVC label winding tension control device |
-
2019
- 2019-12-31 CN CN201911410559.0A patent/CN110963334A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798029A (en) * | 2009-11-09 | 2010-08-11 | 东莞市飞新达精密机械科技有限公司 | Automatic rewinding device |
| CN201903793U (en) * | 2010-09-30 | 2011-07-20 | 武汉钢铁(集团)公司 | Tension control device for strip steel processing line coiling region |
| CN102167246A (en) * | 2010-12-31 | 2011-08-31 | 东莞市利帆精密机械制造厂 | Film stripping and rewinding machine |
| CN202464879U (en) * | 2012-01-17 | 2012-10-03 | 江苏领航材料科技有限公司 | Casting and rolling improvement device for lithium battery diaphragm production line |
| CN102923511A (en) * | 2012-10-31 | 2013-02-13 | 上海海泰克***工程有限公司 | Winding tension control system |
| CN203636877U (en) * | 2013-12-27 | 2014-06-11 | 天津市天塑滨海氟塑料制品有限公司 | Numerical-control rotary-cut lathe used for producing polytetrafluoroethylene turning film |
| CN105173828A (en) * | 2015-08-11 | 2015-12-23 | 张家港市兰航机械有限公司 | Traction winding machine |
| CN207375435U (en) * | 2017-09-28 | 2018-05-18 | 汕头市远东轻化装备有限公司 | A kind of double-station winding tension control device |
| CN108190586A (en) * | 2017-12-14 | 2018-06-22 | 合肥乐凯科技产业有限公司 | A kind of improvement winder winding corrugated method of thin film bottoming |
| CN208326839U (en) * | 2018-06-15 | 2019-01-04 | 安徽金日包装有限公司 | A kind of PVC label winding tension control device |
| CN108864627A (en) * | 2018-07-02 | 2018-11-23 | 重庆云天化瀚恩新材料开发有限公司 | A kind of polyvinyl alcohol film and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115064755A (en) * | 2022-08-16 | 2022-09-16 | 江苏时代新能源科技有限公司 | Winding method and winding system |
| CN115064755B (en) * | 2022-08-16 | 2022-11-25 | 江苏时代新能源科技有限公司 | Winding method and winding system |
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