CN203998315U - Spread rolls for lithium battery diaphragm - Google Patents
Spread rolls for lithium battery diaphragm Download PDFInfo
- Publication number
- CN203998315U CN203998315U CN201420394591.0U CN201420394591U CN203998315U CN 203998315 U CN203998315 U CN 203998315U CN 201420394591 U CN201420394591 U CN 201420394591U CN 203998315 U CN203998315 U CN 203998315U
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- CN
- China
- Prior art keywords
- spread rolls
- lithium battery
- battery diaphragm
- spread
- rolls body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 41
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 230000009471 action Effects 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- 210000005056 cell body Anatomy 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 abstract description 17
- 238000010622 cold drawing Methods 0.000 abstract description 5
- 239000004411 aluminium Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010301 surface-oxidation reaction Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model belongs to the wind-up roll expansion equipment field of biaxial tension lithium battery diaphragm, is specifically related to a kind of novel spread rolls for lithium battery diaphragm.The utility model comprises spread rolls body, and the two ends of spread rolls body possess to realize the shaft of spread rolls body revolution action, and described this body profile of spread rolls is straight tube column, and its cylinder is configured for the fitting surface coordinating with the face of lithium battery diaphragm; The cylinder of described spread rolls body is face symmetrical structure, and spread rolls body is postponed respectively and is concaved with single helical groove one to its both sides axle head around its cylinder by its plane of symmetry place, and above-mentioned twice single helical groove is face along the aforementioned plane of symmetry and is arranged symmetrically with.The utility model is in the Minimal Tension expanded function that can guarantee with respect to lithium battery diaphragm, and the profile pattern in the time of not only guaranteeing its barrier film rolling, can avoid again the generation of traditional barrier film cold drawing deformation situation.
Description
Technical field
The utility model belongs to the wind-up roll expansion equipment field of biaxial tension lithium battery diaphragm, is specifically related to a kind of novel spread rolls for lithium battery diaphragm.
Background technology
In the structure of lithium cell, barrier film is one of crucial interior layer assembly.The performance of barrier film has determined the interfacial structure, internal resistance of battery etc., directly affects the characteristics such as capacity, circulation and safety performance of battery, and the barrier film of excellent performance has important effect to improving the Combination property of battery.In the actual course of processing, lithium battery diaphragm is through after longitudinal, cross directional stretch, the internal indicator such as inner pore size and micropore distribution, void content are all molded, and afterwards, how uniformity, indeformable, covering to rolling roller of Minimal Tension have become the most important thing.Wrapup procedure septation expansion force, tensile force are excessive, capital causes barrier film cold drawn, thereby cause that separator product internal performance index changes, if barrier film is not carried out to Minimal Tension expansion during rolling, barrier film can form fold again, cause barrier film Folding Deformation, affect rolling quality, and then quality and product qualified rate are cut in impact.
At present, lithium battery diaphragm manufacturer finally expands operation by arc rubber spread rolls before as barrier film rolling together, thereby guarantees that it is by the tension force expanded function of Xiang Qi both sides, face stage casing.Yet, its structure has no doubt realized part expansion and the smooth ability of lithium battery diaphragm, but the lithium battery diaphragm that the arcuate configuration of its body of roll has often been tending towards uniformity to thickness and structure has again been bestowed extra deformation power, cause lithium battery diaphragm to produce face evagination and secondary cold drawing deformation phenomenon, thus the whole actual product mass formation harmful effect to lithium battery diaphragm.
Summary of the invention
The purpose of this utility model is to provide a kind of rational in infrastructure and spread rolls for lithium battery diaphragm of reliable operation, it is in the Minimal Tension expanded function that can guarantee with respect to lithium battery diaphragm, profile pattern in the time of not only guaranteeing its barrier film rolling, can avoid again the generation of traditional barrier film secondary cold drawing deformation situation.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of spread rolls for lithium battery diaphragm, comprise spread rolls body, the two ends of spread rolls body possess to realize the shaft of spread rolls body revolution action, it is characterized in that: described this body profile of spread rolls is straight tube column, and its cylinder is configured for the fitting surface coordinating with the face of lithium battery diaphragm; The cylinder of described spread rolls body is face symmetrical structure, and spread rolls body is postponed respectively and is concaved with single helical groove one to its both sides axle head around its cylinder by its plane of symmetry place, and above-mentioned twice single helical groove is face along the aforementioned plane of symmetry and is arranged symmetrically with.
Described single helical groove is deep-slotted chip breaker and its cell body degree of depth h=0.3mm～0.7mm, and its cell body is along become around the axis direction of direction with spread rolls body of postponing angle a=30 °～45 ° of spread rolls body cylinder.
Described spread rolls body is hollow aluminum roll structure, and embedded layout is located for being connected the rolling bearing of spread rolls body and shaft in the both ends of spread rolls body; Between spread rolls body inner hole wall and rolling bearing outer ring, form interference or transition fit, between described shaft outer wall and rolling bearing inner ring, form interference or transition fit.
The beneficial effects of the utility model are:
1), the quality of lithium battery diaphragm rolling effect, the formation state that carries out rolling front surface with its barrier film plays key role, and will make lithium battery diaphragm reach surfacing, the expansion effect before rolling is very crucial.The expansion structure that the expansion effect having reached must have, in the Minimal Tension expansion of when expansion, can make lithium battery diaphragm reach surfacing, does not make again lithium battery diaphragm cold drawing deformation to such an extent as to affects the inside and outside product design of lithium battery diaphragm.The utility model passes through than traditional arch rollers difference straight tube column structure, thereby guaranteed that lithium battery diaphragm is still possessing splendid planeness after spread rolls body, and then the assurance that provides the foundation of the profile pattern when the barrier film rolling, avoided traditional and pushed the generation that the secondary cold drawing deformation situation of lithium battery diaphragm appears in presses against diaphragm stage casing because of arch rollers.The single helical groove of the face symmetrical structure of the spread rolls body cylinder place screw arrangement that diameter is consistent, realized the horizontal low-tension expansion effect by place, Xiang Qi both sides, lithium battery diaphragm stage casing, do not causing under the prerequisite of diaphragm deflection, spiral fluted is to the pulling force for barrier film of both sides, and it possesses the guiding expansion effect of assigned direction.Realized the Minimal Tension expanded function of lithium battery diaphragm.Meanwhile, the layout of concave arc groove shape structure, has also guaranteed the contact non-invasi of the lithium battery diaphragm face of contact with it, and finally stable the manufacturing efficiently for lithium battery diaphragm provides stable assurance.
2), hollow aluminum roller coordinates the project organization of embedded rolling bearing, on the one hand, adopt lightweight aluminium roller, reduced roller weight, reduced the static deflection degree of roller, not only this body action of spread rolls is more light, simultaneously also for the follow-up rolling planeness of the lithium battery diaphragm of cooperation with it provides assurance; On the other hand, spread rolls body adopts mandrel not rotate and the mode of aluminium roller shell rotation, when having reduced the space hold degree of whole spread rolls body, has also obtained the wider cylinder face area coordinating with lithium battery diaphragm, its frictional damping is little, reliable and stable work.
3), the cylinder place of spread rolls body, the Yi Qi center plane of symmetry is the reversing sense arc plug helix that starting point adopts designated depth, is also aforesaid single helical groove structure.Like this, lithium battery diaphragm, after trimming, causes rolling roller, and the barrier film of longitudinally crumpling flattens through the utility model, wrinkle resistant, does not damage, and micro-extendability is good.Reality can consider its cylinder to carry out surface oxidation treatment, further to guarantee the flattening effect of lithium battery diaphragm.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structure cutaway view Amplified image of the I part single helical groove of Fig. 1;
Fig. 3 is mode of operation site plan of the present utility model.
In accompanying drawing, each label and corresponding component corresponding relation of the present utility model are as follows:
A-lithium battery diaphragm B-rolling roller C-jockey pulley
10-spread rolls body 11-single helical groove 20-shaft 30-rolling bearing
The specific embodiment
For ease of understanding, in conjunction with Fig. 1-3 pair concrete enforcement structure of the present utility model and workflow, do following description herein:
The utility model concrete structure as shown in Figure 1-2, comprise that profile is the aluminium roller of the straight tube tubular structure of hollow (being also spread rolls body 10), the embedded layout rolling bearing 30 in both ends of aluminium roller, rolling bearing 30 outer rings form and coordinate with aluminium roller inner hole wall, and rolling bearing 30 inner rings form affixed cooperation with 20 reserved of shafts.During actual use, shaft 20 is fixed in outside frame, and aluminium roller can be made the rotational action along its axis.Tubular symmetric profile due to aluminium roller, it must possess and have the plane of symmetry in stage casing, the utility model is on aforementioned basis, outer wall with aluminium roller is also on its cylinder, the winding single helical groove 11 that postpones along from its plane of symmetry to its place, both ends face symmetry, and for guaranteeing the good operating characteristic of its single helical groove 11, limiting its groove is herein deep-slotted chip breaker and its cell body degree of depth h=0.3mm～0.7mm, and its cell body is along become around the axis direction of direction with aluminium roller of postponing angle a=30 °～45 ° of aluminium roller cylinder.During practical operation, its aluminium roller surface can be made surface oxidation treatment, further to guarantee its working effect.
During the utility model real work, as shown in Figure 3, the two ends shaft of aluminium roller is fixed in outside frame and with rolling coil of strip core and is adjusted to parastate, lithium battery diaphragm A is after trimming, cause rolling roller B place, now the utility model is also between wind-up roll cylinder B and jockey pulley C, specifically as shown in Figure 3.Like this, the lithium battery diaphragm A longitudinally crumpling coming via the manufacturing procedure of preorder is via jockey pulley C, cylinder of the present utility model and even the collaborative side direction spreading of single helical groove 11 on it, thereby wrinkle resistant while having guaranteed its barrier film rolling and not damage effect, in the income rolling roller B being finally flattened; Its work efficiency is high and reliable and stable, and market outlook are wide.
Claims (3)
1. the spread rolls for lithium battery diaphragm, comprise spread rolls body (10), the two ends of spread rolls body (10) possess to realize the shaft (20) of spread rolls body (10) revolution action, it is characterized in that: described spread rolls body (10) profile is straight tube column, and its cylinder is configured for the fitting surface coordinating with the face of lithium battery diaphragm; The cylinder of described spread rolls body (10) is face symmetrical structure, spread rolls body (10) is postponed respectively and is concaved with one single helical groove (11) to its both sides axle head around its cylinder by its plane of symmetry place, and above-mentioned twice single helical groove (11) is face along the aforementioned plane of symmetry and is arranged symmetrically with.
2. the spread rolls for lithium battery diaphragm according to claim 1, it is characterized in that: described single helical groove (11) is for deep-slotted chip breaker and its cell body degree of depth h=0.3mm～0.7mm, its cell body is along become around the axis direction of direction with spread rolls body (10) of postponing angle a=30 °～45 ° of spread rolls body (10) cylinder.
3. the spread rolls for lithium battery diaphragm according to claim 1 and 2, it is characterized in that: described spread rolls body (10) is hollow aluminum roll structure, embedded layout is located for being connected the rolling bearing (30) of spread rolls body (10) and shaft (20) in the both ends of spread rolls body (10); Between spread rolls body (10) inner hole wall and rolling bearing (30) outer ring, form interference or transition fit, between described shaft (20) outer wall and rolling bearing (30) inner ring, form interference or transition fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394591.0U CN203998315U (en) | 2014-07-16 | 2014-07-16 | Spread rolls for lithium battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394591.0U CN203998315U (en) | 2014-07-16 | 2014-07-16 | Spread rolls for lithium battery diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203998315U true CN203998315U (en) | 2014-12-10 |
Family
ID=52038349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420394591.0U Expired - Fee Related CN203998315U (en) | 2014-07-16 | 2014-07-16 | Spread rolls for lithium battery diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203998315U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217254A (en) * | 2017-12-13 | 2018-06-29 | 六安银鱼网业有限公司 | A kind of winding device of the cable of plastics fishing net |
| CN111573381A (en) * | 2020-05-28 | 2020-08-25 | 浙江永利经编股份有限公司 | Lace fabric conveying structure with surface cleaning and leveling functions |
-
2014
- 2014-07-16 CN CN201420394591.0U patent/CN203998315U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217254A (en) * | 2017-12-13 | 2018-06-29 | 六安银鱼网业有限公司 | A kind of winding device of the cable of plastics fishing net |
| CN111573381A (en) * | 2020-05-28 | 2020-08-25 | 浙江永利经编股份有限公司 | Lace fabric conveying structure with surface cleaning and leveling functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |