CN209374541U - A kind of lithium ion battery wet process diaphragm wind-up roll - Google Patents
A kind of lithium ion battery wet process diaphragm wind-up roll Download PDFInfo
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- CN209374541U CN209374541U CN201920402002.1U CN201920402002U CN209374541U CN 209374541 U CN209374541 U CN 209374541U CN 201920402002 U CN201920402002 U CN 201920402002U CN 209374541 U CN209374541 U CN 209374541U
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- roll
- wind
- lithium ion
- ion battery
- flexible material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a kind of lithium ion battery wet process diaphragm wind-up rolls, belong to lithium ion battery wet process diaphragm production technical field.The lithium ion battery wet process diaphragm wind-up roll of the utility model, including wind-up roll and the flexible material being circumferentially evenly spaced on positioned at winding roller surface along it, the trapezoidal structure in the cross section of the flexible material, and its outer corners is arc, and the length of flexible material is 4.3-4.5m, with a thickness of 10-15mm, the width close to roll surface is 30-50mm, and the width far from roll surface is 50-100mm.Production process septation can be effectively prevent to occur too tight or too loose state because of internal stresses release using the wind-up roll of the utility model, and then generate sudden and violent muscle, wrinkle defect.
Description
Technical field
The utility model belongs to lithium ion battery wet process diaphragm production technical field, more specifically to a kind of lithium from
Sub- cell wet-method diaphragm wind-up roll.
Background technique
Lithium ion battery is made of anode, cathode, electrolyte and diaphragm etc., wherein positive electrode is by the transition gold containing lithium
Belong to oxide composition, common material has cobalt acid lithium, LiMn2O4, ternary material and LiFePO4.Negative electrode material can be graphite,
Graphitized carbon material, modified graphite, graphitized intermediate-phase carbon particulate, electrolyte are largely by lithium hexafluoro phosphate plus organic molten
Agent is made into.Battery diaphragm is a kind of special composite membrane, its function is isolation positive and negative anodes, prevents electronics from passing through, while can
Lithium ion is allowed to pass through, to complete quick transmission of the lithium ion between positive and negative anodes during charge discharge.Currently,
Existing battery diaphragm mainly uses polyethylene (PE) or polypropylene (PP) microporous barrier.
With the rapid development of Battery Market, the requirement to diaphragm quality is also increasingly improved, application of the diaphragm in lithium battery
In play an important role.Lithium ion battery wet process diaphragm is in process of production because technological reason can generate internal stress, and in Hou Chu
During reason, the meeting such as temperature, stress, gas inside diaphragm slow release with the time, during release, diaphragm meeting
Generate certain contraction.But since wind-up roll is rigid material, winding roller diameter is remained unchanged, therefore the winding for diaphragm
Tension etc., which not can be carried out, to be released effectively, and the diaphragm after resulting in winding in this way can occur too tight or too loose with internal stresses release
State influence the service performance of lithium ion battery separator to generate sudden and violent muscle, wrinkle defect.
Through retrieving, the application case that Chinese Patent Application No. is 201721192135.8 disclose the lithium battery of improvement a kind of every
Film reel, the reel of this application, including cylinder, the cylinder outer peripheral surface are equipped with multiple integrally formed convex with cylinder
Item, the lateral surface of the raised line constitute the outer periphery for winding diaphragm, are equipped with elongated slot, the elongated slot between the adjacent raised line
Inside it is inlaid with silica gel strip.This application can be made inside the diaphragm on wind-up roll cylinder to a certain extent by the setting of silica gel strip
Tension is released effectively, but it needs the structure to original wind-up roll to be changed, and process operation is complicated
Utility model content
1. to solve the problems, such as
The purpose of the utility model is to overcome lithium ion battery wet process diaphragm in the prior art, to be also easy to produce sudden and violent muscle, fold existing
As providing a kind of lithium ion battery wet process diaphragm wind-up roll to influence the deficiency of its service performance.It is practical new using this
The wind-up roll of type can effectively prevent production process septation to occur too tight or too loose state because of internal stresses release, and then produce
Raw sudden and violent muscle, wrinkle defect.
2. technical solution
To solve the above-mentioned problems, technical solution used by the utility model is as follows:
A kind of lithium ion battery wet process diaphragm wind-up roll of the utility model, including wind-up roll and be located at winding roller surface
The flexible material being circumferentially evenly spaced on along it, the trapezoidal structure in the cross section of the flexible material, and its outer corners is
Arc.
Further, the flexible material is using buffering cotton, pearl cotton or foam cotton.
Further, the length of the flexible material is 4.3-4.5m, with a thickness of 10-15mm, close to the width of roll surface
Degree is 30-50mm, and the width far from roll surface is 50-100mm.
Further, the radian of the outer corners is 6-12 °, and the spacing between adjacent flexible material is 8-12cm.
Further, the flexible material is adhered to the surface of wind-up roll by glue.
Further, the flexible material is attached at the surface of wind-up roll by adhesive tape.
Further, the adhesive tape is evenly spaced in the back side of flexible material, its spacing 8-12cm, and width is
8-10cm, with a thickness of 5-8cm, length 1.5m-2.5m.
Further, the back side of the flexible material is equipped with three adhesive tape being evenly spaced on, and two, edge glue
Spacing between item and flexible material both ends is 5-10cm.
Further, the adhesive tape uses one of butadiene-styrene rubber, EP rubbers, neoprene, isoprene rubber.
3. beneficial effect
Compared with the prior art, the utility model has the following beneficial effects:
(1) a kind of lithium ion battery wet process diaphragm wind-up roll of the utility model, at winding roller surface setting interval point
The flexible material of cloth can effectively absorb the internal stress of winding metacneme release by flexible material, to avoid
Tightly fold, sudden and violent muscle defect caused by excessively loose state.In addition, the trapezoidal structure in the cross section of flexible material, by will be outside it
Incline angle is designed as arc, thus the mark for effectively avoiding flexible material seamed edge from generating diaphragm.
(2) a kind of lithium ion battery wet process diaphragm wind-up roll of the utility model, the flexible material with a thickness of 10-
15mm, the width close to roll surface are 30-50mm, and the width far from roll surface is 50-100mm, between adjacent flexible material between
It away from for 8-12cm, is optimized by the size to flexible material, so as to the release of farthest absorbing septum
Internal stress.
(3) a kind of lithium ion battery wet process diaphragm wind-up roll of the utility model, the flexible material pass through adhesive tape
Be attached at the surface of wind-up roll, to greatly improve the efficiency, save cost, decrease it is subsequent replacement flexible material when
Cleaning.
(4) a kind of lithium ion battery wet process diaphragm wind-up roll of the utility model, the back side of the flexible material is equipped with
Three adhesive tape being evenly spaced on, and the distribution and size of adhesive tape are optimized, it thereby may be ensured that flexible material
The fastness of attaching guarantees using effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of lithium ion battery wet process diaphragm wind-up roll of the utility model；
Fig. 2 is the side view of the flexible material of the utility model；
Fig. 3 is the attachment structure schematic diagram of flexible material.
In figure: 1, flexible material；101, outer corners；2, wind-up roll；3, adhesive tape.
Specific embodiment
The utility model is further described below combined with specific embodiments below.
Embodiment 1
Diaphragm after winding can gradually appear the excessively loose state of tension with the increase of standing time, the reason for this is that rigid roller
Can not absorbing septum release internal stress.Therefore, the flexible material that the present embodiment carries out special shape to rigid roller attaches.The shape
The flexible material of shape can effectively absorb the internal stress of winding diaphragm release, fold caused by avoiding because of diaphragm internal stresses release,
The generation of sudden and violent muscle defect.Specifically, as shown in Figure 1 and Figure 2, the lithium ion battery wet process diaphragm wind-up roll of the present embodiment, including
Wind-up roll 2 and the flexible material 1 being circumferentially evenly spaced on positioned at 2 surface of wind-up roll along it, the cross section of the flexible material 1
Trapezoidal structure, and its outer corners 101 is arc, to can effectively avoid the mark that 1 seamed edge of flexible material generates diaphragm.
Above-mentioned flexible material is one of buffering cotton, pearl cotton and foam cotton, the length is 4.3-4.5m, with a thickness of
10-15mm, the width close to roll surface (relatively narrow one side) are 30-50mm, and the width far from roll surface (wider one side) is 50-
100mm, the radian of outer corners 101 are 6-12 °, and the spacing between adjacent flexible material 1 is 8-12cm, by flexible material
Size optimize, so as to farthest absorbing septum release internal stress.
Embodiment 2
The lithium ion battery wet process diaphragm wind-up roll of the present embodiment, structure is substantially with embodiment 1, further,
The flexible material 1 is adhered to the surface of wind-up roll 2 by glue.
Embodiment 3
The lithium ion battery wet process diaphragm wind-up roll of the present embodiment, structure is substantially with embodiment 1, further,
As shown in figure 3, the flexible material 1 is attached at the surface of wind-up roll 2 by adhesive tape 3, therefore flexible material 1 is wrapped in receipts
Adhesive tape 3 need to only be pasted when on winding up roller 2, greatly improve the efficiency, save cost, decrease subsequent cleaning
Work (handles the glue of roller surface) when replacement flexible material 1.Meanwhile adhesive tape length is unlimited, it can be according to practical wind-up roll size
It is cut out.Specifically, above-mentioned adhesive tape 3 uses one of butadiene-styrene rubber, EP rubbers, neoprene, isoprene rubber,
It is even to be spaced apart in the back side of flexible material 1, and its spacing is 8-12cm, width 8-10cm, with a thickness of 5-8cm, length is
1.5m-2.5m。
Embodiment 4
The lithium ion battery wet process diaphragm wind-up roll of the present embodiment, structure is substantially with embodiment 3, further,
The back side of the flexible material 1 is equipped with three adhesive tape 3 being evenly spaced on, and is located at the centre and both ends of flexible material,
And the spacing between 1 both ends of two, edge adhesive tape 3 and flexible material can be set as needed as 5-10cm.
Claims (9)
1. a kind of lithium ion battery wet process diaphragm wind-up roll, it is characterised in that: including wind-up roll (2) and be located at wind-up roll (2)
The flexible material (1) that surface is circumferentially evenly spaced on along it, the trapezoidal structure in cross section of the flexible material (1), and its
Outer corners (101) are arc.
2. a kind of lithium ion battery wet process diaphragm wind-up roll according to claim 1, it is characterised in that: the flexibility material
Expect (1) using buffering cotton, pearl cotton or foam cotton.
3. a kind of lithium ion battery wet process diaphragm wind-up roll according to claim 1, it is characterised in that: the flexibility material
The length for expecting (1) is 4.3-4.5m, and with a thickness of 10-15mm, the width close to roll surface is 30-50mm, the width far from roll surface
For 50-100mm.
4. a kind of lithium ion battery wet process diaphragm wind-up roll according to claim 1, it is characterised in that: the outer incline
The radian at angle (101) is 6-12 °, and the spacing between adjacent flexible material (1) is 8-12cm.
5. a kind of lithium ion battery wet process diaphragm wind-up roll described in any one of -4 according to claim 1, it is characterised in that:
The flexible material (1) is adhered to the surface of wind-up roll (2) by glue.
6. a kind of lithium ion battery wet process diaphragm wind-up roll described in any one of -4 according to claim 1, it is characterised in that:
The flexible material (1) is attached at the surface of wind-up roll (2) by adhesive tape (3).
7. a kind of lithium ion battery wet process diaphragm wind-up roll according to claim 6, it is characterised in that: the adhesive tape
(3) it is evenly spaced in the back side of flexible material (1), its spacing 8-12cm, width 8-10cm, it is long with a thickness of 5-8cm
Degree is 1.5m-2.5m.
8. a kind of lithium ion battery wet process diaphragm wind-up roll according to claim 7, it is characterised in that: the flexibility material
The back side of material (1) is equipped with three adhesive tape (3) being evenly spaced on, and two, edge adhesive tape (3) and flexible material (1) both ends it
Between spacing be 5-10cm.
9. a kind of lithium ion battery wet process diaphragm wind-up roll according to claim 7, it is characterised in that: the adhesive tape
(3) one of butadiene-styrene rubber, EP rubbers, neoprene, isoprene rubber are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920402002.1U CN209374541U (en) | 2019-03-27 | 2019-03-27 | A kind of lithium ion battery wet process diaphragm wind-up roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920402002.1U CN209374541U (en) | 2019-03-27 | 2019-03-27 | A kind of lithium ion battery wet process diaphragm wind-up roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209374541U true CN209374541U (en) | 2019-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920402002.1U Active CN209374541U (en) | 2019-03-27 | 2019-03-27 | A kind of lithium ion battery wet process diaphragm wind-up roll |
Country Status (1)
| Country | Link |
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| CN (1) | CN209374541U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606096A (en) * | 2020-05-29 | 2020-09-01 | 湖南中锂新材料有限公司 | Winding process of lithium battery diaphragm |
| CN111640908A (en) * | 2020-06-03 | 2020-09-08 | 湖北亿纬动力有限公司 | Crease-resistant device and crease-resistant paster pasting method |
-
2019
- 2019-03-27 CN CN201920402002.1U patent/CN209374541U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606096A (en) * | 2020-05-29 | 2020-09-01 | 湖南中锂新材料有限公司 | Winding process of lithium battery diaphragm |
| CN111640908A (en) * | 2020-06-03 | 2020-09-08 | 湖北亿纬动力有限公司 | Crease-resistant device and crease-resistant paster pasting method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 891, Yinhuang East Road, Economic and Technological Development Zone, Maanshan City, Anhui Province, 243071 Patentee after: Anhui Jinli new energy Co.,Ltd. Address before: 243000 no.891, Yinhuang East Road, Maanshan economic and Technological Development Zone, Maanshan City, Anhui Province Patentee before: ANHUI XINHENG NEW MATERIAL TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |