CN105811018A - Method for fixing pole plate on diaphragm - Google Patents
Method for fixing pole plate on diaphragm Download PDFInfo
- Publication number
- CN105811018A CN105811018A CN201610295893.6A CN201610295893A CN105811018A CN 105811018 A CN105811018 A CN 105811018A CN 201610295893 A CN201610295893 A CN 201610295893A CN 105811018 A CN105811018 A CN 105811018A
- Authority
- CN
- China
- Prior art keywords
- barrier film
- pole plate
- colloid
- positive
- plate
- 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.)
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Classifications
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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
- H01M10/058—Construction or manufacture
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or 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
Abstract
The invention relates to a method for fixing a pole plate on a diaphragm. The method comprises the following steps of taking a positive pole plate and a negative pole plate which are fabricated, separately coating colloid onto the edges of the two surfaces of the positive pole plate and the negative pole plate, and drying the positive pole plate and the negative pole plate for use; grinding the positive pole plate and the negative pole plate which are dried; cutting the positive pole plate and the negative pole plate which are grinded; alternatively placing the positive pole plate and the negative pole plate which are cut right above the diaphragm; and carrying out hot-pressing processing on the positive pole plate, the negative pole plate and the diaphragm so that the colloid is attached onto the diaphragm. According to the method, the diaphragm and the pole plates become a coherent whole, and rapid winding can be achieved while the structural advantages of a lamination battery can be ensured; the problem of low fabrication efficiency of the lamination battery due to the adoption of a Z-shaped structure of a current lamination battery is solved, and the working efficiency is improved; and meanwhile, the structure of a winding type lamination battery is more stable than that of a Z-shaped lamination battery, and the relative positions of the pole plates are difficult to change due to the effect of an external force.
Description
Technical field
The present invention relates to technical field of lithium-ion battery, be specifically related to a kind of method being fixed on barrier film by pole piece.
Background technology
Lithium ion battery is widely used in the middle of electronic product because of advantages such as its energy density height, voltage stabilization, memory-less effect and environmental protections.In recent years, due to the fast development of domestic automobile, quantity is increased sharply, and while bringing traffic congestion to urban life, causes serious pollution, haze weather showed increased also to our air.Adding up according to relevant departments, vehicle exhaust has accounted for air-polluting more than 20%.Country, in order to solve this problem, starts lithium ion battery applications in automotive field, greatly develops new-energy automobile, reach the effect of energy-saving and emission-reduction.Lithium ion battery is of a great variety, from having seen cylinder in shape, square, abnormity；Have takeup type from structure, stacked etc..Different types of battery production technology and flow process just have very big difference.
Lithium ion battery in charge and discharge process, positive pole, negative pole due to lithium ion embedding with deviate from, expansion and the contraction of pole piece volume can be caused, when adopt continuous winding method make battery time, the change in volume of pole piece can make battery core cause very big deformation, causes bulging shell；Barrier film is internal produces tension force, and barrier film is wrinkling, contacts variation between electrode with barrier film, electrolyte, gap is produced between pole piece and barrier film, in turn result in the uneven of pole piece CURRENT DISTRIBUTION so that pole piece local precipitates out Li dendrite, and the cycle life of battery is caused very ill effect.
At present, solve to do laminated battery plate exactly because electrode material produces cell deformation best bet in charge and discharge process.On the one hand, pole piece has the space of free wxpansion, and on the other hand, the change of volume will not be gathered, and does not result in barrier film internal generation tension force.Meanwhile, the power-performance of battery is also had greatly improved by laminated battery plate.But, laminated batteries adopts zigzag folding mode at present mostly, the machinery of a back and forth movement pull barrier film, separately has mechanical hand that alternately positive/negative plate is placed diaphragm, and this kind of mode is inefficient, and machinery is difficult to high-frequency reciprocating motion.
Summary of the invention
It is an object of the invention to provide a kind of method being fixed on barrier film by pole piece so that barrier film and pole piece become a coherent entirety, it is possible to while ensureing the structural advantage of laminated batteries, can realize again quick winding, improve work efficiency.
For achieving the above object, present invention employs techniques below scheme:
A kind of method pole piece being fixed on barrier film, it is characterised in that comprise the following steps:
(1) take the positive plate made and negative plate, be respectively coated with colloid dry for standby at the edge, two sides of positive plate and negative plate；
(2) undertaken rolling process by the positive plate after drying and negative plate；
(3) positive plate after rolling and negative plate are cut；
(4) positive plate after cutting and negative plate are alternately disposed in directly over barrier film；
(5) positive plate, negative plate and barrier film are carried out hot-pressing processing, make colloid stick on barrier film.
Described barrier film is PP barrier film, PE barrier film, PP/PE/PP barrier film, ceramic-coated separator or non-woven fabrics barrier film.
Described colloid includes one or more mixing in PVDF colloid, CMC colloid, SBR colloid, EVA colloid, PI colloid.
Positive electrode used by described positive plate includes the mixing of one or more in iron phosphate lithium positive pole, tertiary cathode, lithium cobaltate cathode, NCA positive pole, LiMn2O4 positive electrode.
Negative material used by described negative plate includes the mixing of one or more in Delanium, native graphite, MCMB, soft carbon, hard carbon, lithium titanate material.
Described positive plate and negative plate and barrier film laminating type are hot melting cohesion.
As shown from the above technical solution, the present invention has made the special pole piece with colloid by the mode of gluing on positive and negative plate, single pole piece is prepared into through laser or cross cutting, by mechanical hand, pole piece is placed on by permanent order the fixed position of barrier film, carry out hot pressing, barrier film and pole piece are bonded together, while thus can ensure that the continuity of barrier film, pole piece has again laminated structure simultaneously, the making of takeup type laminated batteries can be realized, solve the problem that current laminated batteries adopts zigzag structure fabrication inefficiency.Meanwhile, takeup type laminated batteries is more stable than the structure of zigzag laminated batteries, and pole piece relative position is not susceptible to External Force Acting and changes.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the present invention；
Fig. 2 is the structural representation before positive plate of the present invention or negative plate cutting；
Fig. 3 is the structural representation after positive plate of the present invention or negative plate cutting.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
A kind of method being fixed on by pole piece on barrier film described in the present embodiment, comprises the following steps:
S1: take the positive plate and negative plate made, is respectively coated with colloid 1 dry for standby at the edge, two sides of positive plate and negative plate powder layer 2, as in figure 2 it is shown, accompanying drawing labelling 3 represents foil in this figure；This colloid includes one or more mixing in PVDF colloid, CMC colloid, SBR colloid, EVA colloid, PI colloid.
S2: undertaken rolling process by the positive plate after drying and negative plate；
S3: the positive plate after rolling and negative plate are cut, is cut to conform to the single battery pole piece of given size, its structure as it is shown on figure 3, in this figure accompanying drawing labelling 4 be the battery pole ear formed after battery pole piece cutting.
S4: the positive plate after cutting and negative plate are alternately disposed in directly over barrier film by mechanical hand；
Barrier film described in this step is PP barrier film, PE barrier film, PP/PE/PP barrier film, ceramic-coated separator or non-woven fabrics barrier film.
S5: positive plate, negative plate and barrier film are carried out hot-pressing processing, makes colloid stick on barrier film, namely completes the fixing of positive and negative plate.
In above-mentioned steps, the positive electrode used by described positive plate includes the mixing of one or more in iron phosphate lithium positive pole, tertiary cathode, lithium cobaltate cathode, NCA positive pole, LiMn2O4 positive electrode.Negative material used by described negative plate includes the mixing of one or more in Delanium, native graphite, MCMB, soft carbon, hard carbon, lithium titanate material.Described positive plate and negative plate and barrier film laminating type are hot melting cohesion.
Method of the present invention, simple to operate, convenient fixing, pole piece relative position is not susceptible to External Force Acting and changes, and facilitates the winding of further battery core, improves battery make efficiency.
Embodiment described above is only that the preferred embodiment of the present invention is described; not the scope of the present invention is defined; under the premise designing spirit without departing from the present invention; various deformation that technical scheme is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention is determined.
Claims (6)
1. method pole piece being fixed on barrier film, it is characterised in that comprise the following steps:
(1) take the positive plate made and negative plate, be respectively coated with colloid dry for standby at the edge, two sides of positive plate and negative plate；
(2) undertaken rolling process by the positive plate after drying and negative plate；
(3) positive plate after rolling and negative plate are cut；
(4) positive plate after cutting and negative plate are alternately disposed in directly over barrier film；
(5) positive plate, negative plate and barrier film are carried out hot-pressing processing, make colloid stick on barrier film.
2. method pole piece being fixed on barrier film according to claim 1, it is characterised in that: described barrier film is PP barrier film, PE barrier film, PP/PE/PP barrier film, ceramic-coated separator or non-woven fabrics barrier film.
3. method pole piece being fixed on barrier film according to claim 1, it is characterised in that: described colloid includes one or more mixing in PVDF colloid, CMC colloid, SBR colloid, EVA colloid, PI colloid.
4. method pole piece being fixed on barrier film according to claim 1, it is characterised in that: the positive electrode used by described positive plate includes the mixing of one or more in iron phosphate lithium positive pole, tertiary cathode, lithium cobaltate cathode, NCA positive pole, LiMn2O4 positive electrode.
5. method pole piece being fixed on barrier film according to claim 1, it is characterised in that: the negative material used by described negative plate includes the mixing of one or more in Delanium, native graphite, MCMB, soft carbon, hard carbon, lithium titanate material.
6. method pole piece being fixed on barrier film according to claim 1, it is characterised in that described positive plate and negative plate and barrier film laminating type are hot melting cohesion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610295893.6A CN105811018A (en) | 2016-05-07 | 2016-05-07 | Method for fixing pole plate on diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610295893.6A CN105811018A (en) | 2016-05-07 | 2016-05-07 | Method for fixing pole plate on diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105811018A true CN105811018A (en) | 2016-07-27 |
Family
ID=56456251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610295893.6A Pending CN105811018A (en) | 2016-05-07 | 2016-05-07 | Method for fixing pole plate on diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105811018A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204415A (en) * | 2017-07-11 | 2017-09-26 | 力信（江苏）能源科技有限责任公司 | A kind of high temperature safe type battery core |
| CN110165280A (en) * | 2019-05-29 | 2019-08-23 | 成都特隆美储能技术有限公司 | The lamination process and its battery of a kind of vibration resistance, long-life energy-storage battery |
| CN110247124A (en) * | 2019-06-24 | 2019-09-17 | 惠州亿纬锂能股份有限公司 | A kind of lithium ion battery high speed laminating method, lamination device and lithium ion battery |
| CN113140804A (en) * | 2020-01-22 | 2021-07-20 | 虞静敏 | Method and equipment for manufacturing lithium ion battery |
| CN113140780A (en) * | 2020-01-22 | 2021-07-20 | 钟浪均 | Fold formula of book electricity core and lithium ion battery |
| CN113597683A (en) * | 2020-09-30 | 2021-11-02 | 宁德新能源科技有限公司 | Electrode assembly, battery and preparation method of electrode assembly |
| CN114024014A (en) * | 2021-10-20 | 2022-02-08 | 三一技术装备有限公司 | Lamination system of battery core pole piece |
| CN114204105A (en) * | 2021-11-10 | 2022-03-18 | 安徽南都华拓新能源科技有限公司 | Soft-packaged novel laminated lithium ion battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916219A (en) * | 2011-10-21 | 2013-02-06 | 因迪能源（苏州）有限公司 | Lithium ion battery core and preparation method thereof |
| CN103427118A (en) * | 2012-05-25 | 2013-12-04 | 拓志光机电股份有限公司 | Electrode assembly and manufacturing method thereof |
| CN105428727A (en) * | 2015-12-24 | 2016-03-23 | 合肥国轩高科动力能源有限公司 | Coiling-type laminated battery manufacturing method coating adhesive on membrane to fix pole pieces |
-
2016
- 2016-05-07 CN CN201610295893.6A patent/CN105811018A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916219A (en) * | 2011-10-21 | 2013-02-06 | 因迪能源（苏州）有限公司 | Lithium ion battery core and preparation method thereof |
| CN103427118A (en) * | 2012-05-25 | 2013-12-04 | 拓志光机电股份有限公司 | Electrode assembly and manufacturing method thereof |
| CN105428727A (en) * | 2015-12-24 | 2016-03-23 | 合肥国轩高科动力能源有限公司 | Coiling-type laminated battery manufacturing method coating adhesive on membrane to fix pole pieces |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204415A (en) * | 2017-07-11 | 2017-09-26 | 力信（江苏）能源科技有限责任公司 | A kind of high temperature safe type battery core |
| CN107204415B (en) * | 2017-07-11 | 2023-08-08 | 利信(江苏)能源科技有限责任公司 | High-temperature safe type battery cell |
| CN110165280A (en) * | 2019-05-29 | 2019-08-23 | 成都特隆美储能技术有限公司 | The lamination process and its battery of a kind of vibration resistance, long-life energy-storage battery |
| CN110247124A (en) * | 2019-06-24 | 2019-09-17 | 惠州亿纬锂能股份有限公司 | A kind of lithium ion battery high speed laminating method, lamination device and lithium ion battery |
| CN113140804A (en) * | 2020-01-22 | 2021-07-20 | 虞静敏 | Method and equipment for manufacturing lithium ion battery |
| CN113140780A (en) * | 2020-01-22 | 2021-07-20 | 钟浪均 | Fold formula of book electricity core and lithium ion battery |
| CN113597683A (en) * | 2020-09-30 | 2021-11-02 | 宁德新能源科技有限公司 | Electrode assembly, battery and preparation method of electrode assembly |
| WO2022067767A1 (en) * | 2020-09-30 | 2022-04-07 | 宁德新能源科技有限公司 | Electrode assembly, battery, and preparation method for electrode assembly |
| CN114024014A (en) * | 2021-10-20 | 2022-02-08 | 三一技术装备有限公司 | Lamination system of battery core pole piece |
| CN114204105A (en) * | 2021-11-10 | 2022-03-18 | 安徽南都华拓新能源科技有限公司 | Soft-packaged novel laminated lithium ion battery |
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| PB01 | Publication | ||
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Application publication date: 20160727 |