CN105428698A - Rolling needle and application method thereof - Google Patents
Rolling needle and application method thereof Download PDFInfo
- Publication number
- CN105428698A CN105428698A CN201510901984.5A CN201510901984A CN105428698A CN 105428698 A CN105428698 A CN 105428698A CN 201510901984 A CN201510901984 A CN 201510901984A CN 105428698 A CN105428698 A CN 105428698A
- Authority
- CN
- China
- Prior art keywords
- volume pin
- hollow tube
- lug boss
- air bag
- needle 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Finger-Pressure Massage (AREA)
Abstract
The invention relates to a rolling needle, which comprises a needle body and an air bag, wherein the air bag is sleeved with the needle body; a plurality of bumps with rough surfaces are formed on the outer surface of the air bag; and a plurality of through holes out of which the bumps can extend are formed in the needle body. The invention aims at providing the rolling needle which is simple in structure, ingenious in structure, convenient to operate and beneficial to preparation of a cell which is compact in structure, high in volume energy density and not easy to break.
Description
Technical field
The present invention relates to battery preparation technology field, especially a kind of volume pin and using method thereof.
Background technology
In lithium battery manufacturing process, battery positive pole piece, cathode pole piece, barrier film are normally closely wound on together by winding apparatus by battery core, winding process is the guarantee realizing battery high volume energy density, and peak volume energy density can make battery carry more energy in limited space.At present, along with the development of battery technology, the high volume energy density to battery such as vehicle power, electric automobile has had higher requirement.In the assembly of winding apparatus, the design of volume pin and winding method are on the very large impact of the battery core performance made.
In existing winding apparatus, usually adopt two volume pins, anode pole piece, barrier film, cathode pole piece are clipped between two volume pins, then reel.In winding process, volume pin can be wound around extruding gradually, and the rear needs that reeled will be rolled up pin and extract out in the middle of core.But when rolling up pin and extract out, need could extract out flicking certain gap smoothly, this affects with regard to giving the tightness degree of core.Due to volume wire surface and core squeezed tight, can be comparatively difficult when pin is extracted out in the middle of core so will roll up, even may take the internal layer barrier film of core out of, destroy core, cause core to scrap.Battery tightly will be made easily to occur in the course of work situation that pole piece ruptures if pine is outer in core, reduce rate of finished products.The cavity that core is formed after extracting out can make battery easily cause internal structure subside and cause battery polarization in the course of the work, reduces the serviceability of battery.During the coiled battery of hollow structure especially in the mill, the shortcoming that current volume pin exists is then more obvious.
Summary of the invention
The object of the present invention is to provide a kind of structure simple and structure rolls up pin cleverly, this volume pin is easy to operate, is conducive to preparing the large and battery core that is not easy fracture of compact conformation, volume energy density.
A kind of volume pin, comprises needle body and air bag; Air sac cover is located in needle body; Gasbag outer surface is formed with multiple shaggy lug boss; Needle body is formed with multiple through hole stretched out for lug boss.
Further, lug boss is inflatable bulge; Bulge communicates with air bag.
Further, lug boss is solid parts.
Further, needle body is connected with volume pin fixed part.
The present invention also provides the using method of above-mentioned volume pin, comprises step:
Hollow tube in needle body outer cover;
Air bag is inflated, makes the lug boss of air bag appearance and the inwall close contact of hollow tube;
Will the preparation material doubling of core alignment bosses on the hollow tube in volume pin outside, rotate volume pin, make hollow tube jointly form the core of hollow with the material of preparation core; And
Air bag is exitted, volume pin is extracted out from hollow tube;
Wherein the diameter of hollow tube is slightly larger than the external diameter of needle body.
Further, the material preparing core comprises barrier film, positive plate, negative plate.
Further, lug boss is inflatable bulge; Bulge communicates with air bag.
Further, lug boss is solid parts.
Further, hollow tube is sheet steel pipe.
Volume pin of the present invention and using method possess following beneficial effect:
1) winding needle construction of the present invention is simple, by inflation and the venting of air bag, can control the laminating degree of rolling up pin and core, thus makes volume pin can not damage core when departing from core, thus can improve rate of finished products and the reliability of takeup type battery core;
2) volume pin of the present invention is particularly useful for the core preparing hollow structure, core and hollow tube one-body molded, effectively can ensure the compact conformation of core, thus core is not easy to occur the phenomenons such as pole piece fracture;
3) volume pin preparation of the present invention forms the core of hollow structure, the battery of the core formation of this hollow circular ring structure in the course of the work, its electric discharge heat can shed more quickly, make cell integrated even heat, there will not be localized hyperthermia's phenomenon, thus ensure that battery can meet larger multiplying power discharging, higher security performance and longer cycle life; Further, battery strings by convenient, such as, can be become chain battery pack when being assembled into battery pack by the battery of this hollow circular ring structure, forms the various shape such as bangle, bracelet.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the volume pin of an embodiment.
Fig. 2 is the schematic diagram that the volume pin of an embodiment coordinates with hollow tube.
Description of reference numerals: 1 is needle body, 2 is air bag, and 22 is lug boss, and 3 is needle body fixed part, and 4 is hollow tube.
Embodiment
Roll up pin below in conjunction with specific embodiment and accompanying drawing to the present invention to be described in further detail.
Volume pin of the present invention is used for the preparation of takeup type core.As depicted in figs. 1 and 2, in a preferred embodiment, volume pin of the present invention comprises needle body, the air bag of inflatable venting and needle body fixed part.One end of needle body is connected with needle body fixed part.Container cavity is offered at the middle part of needle body.Air sac cover is located in the container cavity of needle body.When air bag is full of gas, the outer surface of air bag presses the inwall of container cavity.Multiple lug boss is formed at the outer surface of air bag.The rough surface of lug boss, or at least lug boss is coarse away from the one side of air bag.Multiple through hole stretched out for lug boss is formed at the outer wall of needle body.Wherein, the quantity of lug boss, shape, material, distributing position all can have multiple design.
Lug boss is formed as the bulge of inflatable venting, and bulge communicates with air bag.When giving airbag aeration, bulge also can correspondingly be heaved, and stretches out from the through hole of needle body.
In another embodiment, lug boss is formed as solid parts, such as solid rubber part etc.When giving airbag aeration, lug boss can stretch out from the through hole of needle body.
The present invention also provides a kind of and utilizes above-mentioned volume pin to prepare the method for takeup type core, specifically comprises the following steps:
Step S1: hollow tube in the needle body outer cover of volume pin;
Step S2: inflate air bag, makes the lug boss of air bag appearance stretch out from the through hole of needle body, and with the inwall close contact of hollow tube;
Step S3: the volume pin fixed part of volume pin is fixed on machine for reeling, will the material doubling of preparation core alignment bosses on the hollow tube of volume pin outside, then rotate volume pin, the material being used in preparation core forms core around hollow tube winding;
Step S4: exit to air bag, makes lug boss be retracted in needle body, then is extracted out from hollow tube by volume pin.
Wherein, the diameter of hollow tube is slightly larger than the external diameter of needle body, and hollow tube is preferably sheet steel pipe.The material of preparation core comprises book film, anode pole piece and cathode pole piece.
Utilize said method can prepare the takeup type core of hollow structure.During preparation core, by can make rough surface and the hollow tube close contact of volume pin lug boss to the airbag aeration of volume pin, make in the core structure of winding formation compacter, thus the pole piece of core is also not easy the phenomenon occurring fracture, and effectively can improve the volume energy density of core.Time prepared by core, by the lug boss of volume pin being made to depart from hollow tube to the air bag deflation of volume pin, thus very simple and convenient when volume pin is extracted out from hollow tube, any destruction and impact can not be caused on core.Further, hollow tube and core form as one structure, and hollow tube can play the effect of the hollow structure of fixing core, thus effectively improves the rate of finished products of core.
The core utilizing volume pin of the present invention to prepare is formed as hollow circular ring structure, the battery of the core formation of this hollow circular ring structure in the course of the work, its electric discharge heat can shed more quickly, make cell integrated even heat, there will not be localized hyperthermia's phenomenon, thus ensure that battery can meet larger multiplying power discharging, higher security performance and longer cycle life.Further, battery strings such as can be become chain battery pack when being assembled into battery pack by convenient by the battery of this hollow circular ring structure, forms the various shape such as bangle, bracelet.
Although the description of this invention carries out in conjunction with above specific embodiment, those skilled in the art can carry out many replacements, modifications and variations, be apparent according to above-mentioned content.Therefore, all like this substitute, improve and change be all included in the spirit and scope of attached claim.
Claims (9)
1. roll up a pin, it is characterized in that, comprise needle body and air bag; Described Air sac cover is located in described needle body; Described gasbag outer surface is formed with multiple shaggy lug boss; Described needle body is formed with multiple through hole stretched out for described lug boss.
2. volume pin according to claim 1, is characterized in that, described lug boss is inflatable bulge; Described bulge communicates with described air bag.
3. volume pin according to claim 1, is characterized in that, described lug boss is solid parts.
4. volume pin according to claim 1, is characterized in that, described needle body is connected with volume pin fixed part.
5. the using method of volume pin as claimed in claim 1, is characterized in that, comprise step:
Hollow tube in described needle body outer cover;
Described air bag is inflated, makes the inwall close contact of the lug boss of air bag appearance and described hollow tube;
Will the preparation material doubling of core alignment bosses on the hollow tube in described volume pin outside, rotate described volume pin, make the material of described hollow tube and described preparation core jointly form the core of hollow; And
Described air bag is exitted, described volume pin is extracted out from described hollow tube;
The diameter of wherein said hollow tube is slightly larger than the external diameter of described needle body.
6. volume pin according to claim 5, is characterized in that, the material of described preparation core comprises barrier film, positive plate, negative plate.
7. volume pin according to claim 5, is characterized in that, described lug boss is inflatable bulge; Described bulge communicates with described air bag.
8. volume pin according to claim 5, is characterized in that, described lug boss is solid parts.
9. volume pin according to claim 5, is characterized in that, described hollow tube is sheet steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901984.5A CN105428698B (en) | 2015-12-09 | 2015-12-09 | A kind of volume needle and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901984.5A CN105428698B (en) | 2015-12-09 | 2015-12-09 | A kind of volume needle and its application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105428698A true CN105428698A (en) | 2016-03-23 |
| CN105428698B CN105428698B (en) | 2018-08-21 |
Family
ID=55506738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510901984.5A Active CN105428698B (en) | 2015-12-09 | 2015-12-09 | A kind of volume needle and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105428698B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986236A (en) * | 2016-01-20 | 2017-07-28 | 东莞市雅康精密机械有限公司 | Roll up pin and coiler device |
| CN109728359A (en) * | 2018-12-31 | 2019-05-07 | 谷新运 | A kind of lithium battery winder matches the mirrored volume needle of naked battery core with production |
| CN111446480A (en) * | 2020-04-29 | 2020-07-24 | 广东微电新能源有限公司 | Preparation method of battery cell of energy storage device and battery cell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859818Y (en) * | 2005-12-29 | 2007-01-17 | 天津力神电池股份有限公司 | Width adjustable reel needle |
| CN201623216U (en) * | 2009-12-31 | 2010-11-03 | 河南比得力高新能源科技有限公司 | Winding pin device of cylindrical lithium ion battery |
| US20130164583A1 (en) * | 2011-12-21 | 2013-06-27 | Seth M. Humphrys | Through weld interconnect joint |
| CN204651411U (en) * | 2015-03-09 | 2015-09-16 | 江苏赛尔电池有限公司 | A kind of winding mould of modified model low-volume secondary battery |
| CN205122699U (en) * | 2015-12-09 | 2016-03-30 | 惠州亿纬锂能股份有限公司 | Winding needle |
-
2015
- 2015-12-09 CN CN201510901984.5A patent/CN105428698B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859818Y (en) * | 2005-12-29 | 2007-01-17 | 天津力神电池股份有限公司 | Width adjustable reel needle |
| CN201623216U (en) * | 2009-12-31 | 2010-11-03 | 河南比得力高新能源科技有限公司 | Winding pin device of cylindrical lithium ion battery |
| US20130164583A1 (en) * | 2011-12-21 | 2013-06-27 | Seth M. Humphrys | Through weld interconnect joint |
| CN204651411U (en) * | 2015-03-09 | 2015-09-16 | 江苏赛尔电池有限公司 | A kind of winding mould of modified model low-volume secondary battery |
| CN205122699U (en) * | 2015-12-09 | 2016-03-30 | 惠州亿纬锂能股份有限公司 | Winding needle |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986236A (en) * | 2016-01-20 | 2017-07-28 | 东莞市雅康精密机械有限公司 | Roll up pin and coiler device |
| CN106986236B (en) * | 2016-01-20 | 2019-03-05 | 东莞市雅康精密机械有限公司 | Roll up needle and winding device |
| CN109728359A (en) * | 2018-12-31 | 2019-05-07 | 谷新运 | A kind of lithium battery winder matches the mirrored volume needle of naked battery core with production |
| CN109728359B (en) * | 2018-12-31 | 2021-10-22 | 叶豪 | Lithium battery winding machine |
| CN111446480A (en) * | 2020-04-29 | 2020-07-24 | 广东微电新能源有限公司 | Preparation method of battery cell of energy storage device and battery cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105428698B (en) | 2018-08-21 |
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