CN101944607B - Preparation method of negative plate of chemical battery - Google Patents
Preparation method of negative plate of chemical battery Download PDFInfo
- Publication number
- CN101944607B CN101944607B CN2010101078058A CN201010107805A CN101944607B CN 101944607 B CN101944607 B CN 101944607B CN 2010101078058 A CN2010101078058 A CN 2010101078058A CN 201010107805 A CN201010107805 A CN 201010107805A CN 101944607 B CN101944607 B CN 101944607B
- Authority
- CN
- China
- Prior art keywords
- starching
- negative plate
- slurry
- sided
- scraping
- 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.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a preparation method of a negative plate of a chemical battery, which comprises the steps of sizing, drying and rolling, wherein the sizing step is continuous, double-side sizing and single-side sizing are operated alternatively, and the single-side sizing is adopted on a surface which has no corresponding positive surface; and that the double-side sizing and the single-side sizing are operated alternatively refers to that the double-side sizing is adopted on a section of the negative plate, the single-side sizing is adopted on a next section, then the double-side sizing is adopted again, and the cycle is repeated.
Description
Technical field
The present invention relates to a kind of preparation method of chemical cell negative plate.
Background technology
Traditional chemical GND piece preparation method is following: cathode size or powder are applied or be filled on the negative pole matrix, roll, cut the back and get into assembly process.In the assembling, when adopting winding method, the negative pole cylinder that leans on that leans on volume core one side and outermost one circle of the inside one circle does not simultaneously all have positive pole-face correspondence with it; When adopting the lamination mode, outmost two housing that leans on does not simultaneously have positive pole-face correspondence with it.Because the reaction of battery plus-negative plate is a liquid-solid interfacial reaction; Ion is that distance participation or the minimum resistance with minimum transmits between both positive and negative polarity; Do not participate in reaction if negative pole or certain anodal one side are not positive corresponding corresponding negative or positive electrodes, its active material utilization is lower.The utilance of facing anodal part in the non-front of GND is low to be improved " alkaline secondary cell " of " drum like alkaline accumulator " of " the capable alkaline battery of cylinder " of Chinese patent CN1297031C bulletin, CN1301564C bulletin, CN2570999Y bulletin to improving respectively, but does not propose method and feasibility existing problems about how to realize; When " a kind of manufacture method of negative plate " of CN101552335A bulletin adopts the back starching mode to make, there is following problem:
1. negative plate adopts horizontal back starching; I.e. back starching on the pole piece Width; The pole piece Width becomes the length direction of coiling when pole piece coiling, promptly as requested utmost point band is cut into the pole piece that requires length after the film-making, must cut earlier just after the film-making then and can carry out soldering polar ear etc.; Can't realize operations such as automatic welding electrode ear and automatic rubberizing, become the governing factor that can't realize automation.
2. do not have transition between pole piece back starching and the two-sided starching, have certain gradient on the pole piece thickness, be easy to generate crackle in the winding process, even fracture.
3. horizontal back starching; Because pole piece thickness is different in the same plane,, promptly must there be a roller that two sections different diameters are arranged in two pair rollers so must adopt special roller press pair roller; This has higher requirement to equipment; And the positioning requirements during utmost point band process roller is very strict, otherwise can cause utmost point tape thickness not match with roller diameter, damages utmost point band by pressure.
4. this kind method can only not have back starching on the corresponding one side of positive plate at tail end, in fact head end and volume be directed against answer also to have one section negative plate not have positive plate corresponding with it.
Therefore, the solution of always seeking in the industry overcomes above-mentioned deficiency.
Summary of the invention
The present invention is not high in order to solve the automaticity that exists in the prior art; There is certain gradient on the pole piece thickness, is easy to generate crackle in the winding process, even fracture; To equipment problem such as have higher requirement; A kind of preparation method of new chemical cell negative plate is provided, has overcome the defective that exists in the prior art, this method is low for equipment requirements, automaticity is high and the pole piece pliability is good.
The present invention adopts following technical scheme to realize:
A kind of preparation method of chemical cell negative plate comprises starching, oven dry, roll-in, and wherein said starching is continuous, and two-sided starching and back starching intersection are carried out, and the one side corresponding with it at no positive pole-face adopts back starching; Said two-sided starching and back starching intersection are meant to go up for one section of negative plate and adopt two-sided starching, adopt back starching at ensuing one section, next are again two-sided starchings, so circulate and carry out.
The preparation method of above-mentioned chemical cell negative plate, wherein said continuous starching is adopted and is scraped the realization of slurry mould.
The preparation method of above-mentioned chemical cell negative plate, the wherein said slurry mould of scraping comprises two scrapers, and an end scraper is fixed, and other end scraper is a movable scraper of being regulated control by numerical control device.Realize the surface blending between said two-sided starching and the back starching through movable scraper.
The manufacturing approach of above-mentioned chemical cell negative plate; The wherein said slurry mould of scraping is arranged on the hopper top that slurry is housed; Be provided with in the said hopper fixed base take away to the axis of guide, pass the axis of guide with base band and get into hopper and scrape the slurry moulding at 5-20mm place under the slurry liquid level.
The manufacturing approach of above-mentioned chemical cell negative plate; It is characterized in that: the said slurry mould of scraping is adjusted distance and the length of back starching between two edges of a knife at any time according to technological requirement; Distance between said two edges of a knife is used to control spreading mass, and the length of said back starching, two-sided starching is confirmed according to design technology.
The manufacturing approach of above-mentioned chemical cell negative plate, the density of wherein said negative plate are 6.20-6.60g/cm
3
The manufacturing approach of above-mentioned chemical cell negative plate, wherein said roll-in are that roll squeezer parallel in the roller left and right sides and that central axis is arranged on the same horizontal plane carries out.
In technical scheme, said that slurry also is the material of pole piece in the prior art because said active material and additive all are the materials of existing manufacturing battery pole piece, therefore in specification, no longer launch to be elaborated.
Regulate the movable scraper of control by numerical control device; Numerical control device is anyly in the prior art can control the flexible equipment of cutter, according to the requirement of technology, sets the distance between the edge of a knife; And configure the flexible time, realizing that two-sided starching and back starching intersect carries out.
The present invention compared with prior art has the following advantages and beneficial effect: the head end and the tail end of corresponding negative plate are all realized back starching with it at no positive plate; Starching does not continuously have slurry on the corresponding with it negative pole face of no positive pole-face, can improve the utilance of negative electrode active material, reduces cost; Reduce the elasticity of battery winding, improve qualification rate; The starching process can be carried out continuously, and after roll extrusion, can directly get into operations such as automatic welding electrode ear, automatic rubberizing, can realize the automation of whole film-making process, obtains the moulding negative plate; Adopt arc transition between two-sided starching and the back starching, in the winding process of pole piece thickness, can avoid the fracture of transition position; Adopt conventional twin rollers pair roller after the starching, need not special processing, be easy to realize.Has wide prospect in industrial application.
Description of drawings
Following accompanying drawing only is intended to the present invention is done schematic illustration and explanation, not delimit the scope of the invention.Wherein:
Fig. 1 is a negative plate sketch map described in the preparation method of a kind of chemical cell negative plate of the present invention;
Fig. 2 scrapes slurry mould structure sketch map described in the preparation method of a kind of chemical cell negative plate of the present invention;
Fig. 3 is the preparation method's of a kind of chemical cell utmost point negative film of the present invention utmost point group sketch map of embodiment 1; Wherein 8 scrape the powder face for negative pole, 9 is the negative pole leading portion, and 10 is anodal tail end, and 11 is winding needle, and 12 is barrier film, and 12 is anodal leading portion.
Embodiment
To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, to contrast description of drawings embodiment of the present invention at present.
Embodiment 1
AA2500HC battery as shown in Figure 1, structure are divided into negative pole and scrape powder face 1, negative pole leading portion 2, anodal tail end 3, winding needle 4, barrier film 5, anodal leading portion 6.Positive pole, barrier film, the mutual range upon range of coiling of negative pole, the inside one circle is by the volume core for negative pole, and last lap leans on box hat.
The manufacture method of positive plate: with commercial ball-shape nickel hydroxide and the cobalt powder ratio proportioning in 95: 5, mix, be filled into then in the foaming nickel, through roll extrusion, cut into 95mm * 43mm * 0.68mm, containing the active material total amount in the positive pole is 10.0g.
The preparation of negative plate comprises mixed slurry, starching continuously, oven dry, roll extrusion, automatic welding electrode ear, automatic rubberizing, cuts.
The preparation slurry is with commercial AB5 hydrogen-storage alloy, with the CMC aqueous solution, processes cathode size.
Adopt continuous starching that slurry is applied to matrix steel band 5 surfaces then; Process and be of a size of 133 * 44 * 0.34mm negative plate; The length of starching negative pole section, two sides 1 as shown in Figure 2 is 85mm; The not starching that contacts with box hat partly is that the length of tail end back starching negative pole section 2 is 42mm, and the not starching that contacts with the volume pin partly is that the length of head end back starching negative pole section 3 is 6mm.The active material total amount is 10.5g.
Starching adopts as shown in Figure 3 scraping to starch mould 4,6 continuously, scrapes slurry mould 4,6 and is arranged on the hopper middle upper part that slurry is housed, and is provided with the fixedly axis of guide 7 of steel band trend in the hopper; Pass the axis of guide 7 entering hoppers with steel band 11 and scrape the slurry moulding at 20mm place under the slurry liquid level, and the axis of guide 7 plays the effect of location; Reduce irregular deformation takes place, an end scraper 4 of scraping the slurry mould is fixing, and other end scraper 6 is a movable scraper; Regulate control by numerical control device (by the PLC program control, can buy), movable scraper is used to realize back starching; Can adjust distance and the length of back starching between two edges of a knife at any time according to technological requirement, the distance between two edges of a knife is used to control spreading mass, by the starching amount decision that meets technological design; The technological requirement of present embodiment is two-sided starching length 85mm, back starching length 42+6=48mm; Two-sided starching scraper distance is 1.0mm, and back starching scraper distance is 0.5mm), therefore set according to technological requirement.
Pole piece after the starching is at 100 ℃ of dry 10min.Pass through the twin rollers roll extrusion then, automatic then welding electrode ear, automatic rubberizing, cutting into leading portion back starching length then is that 6mm, middle two-sided starching length are that 85mm, terminal back starching length are the pole piece of 42mm.
The manufacture method of battery places above-mentioned positive/negative plate centre to fold in order in barrier film, wherein one of the negative plate back starching faces radial outside; Not starching one was facing to volume core and box hat after it was reeled; Be wound into helical form then, make battery utmost point group, again the utmost point is assembled in the box hat of AA circular batteries; Inject LiOH, NaOH, KOH ternary electrolyte, seal the Ni-MH battery of processing AA2500 at last.
In order to contrast; The positive plate of control cell is identical with the even implementation method of barrier film; The prescription of negative plate is also identical with material, and different is that control cell adopts traditional starching mode, and promptly whole pole piece all is two-sided starching; Through oven dry, roll extrusion, cut into the negative plate of 133 * 44 * 0.34mm, the active material total amount is 11.55g.The battery production method is also identical.
The battery that embodiment is made and the physics comparable situation such as the following table of control cell:
| The negative plate size | Volume reduces after scraping powder | Battery package elasticity descends after scraping powder | Scrape the about alloyed powder of powder deutomerite |
| 133×44×0.34mm | 10.6％ | 3.2％ | 10％ |
Battery and control cell performance that the matrix embodiment is made are following:
(1) 0.2C solid measure
According to the regulation of IEC61951:2003, under the situation of 20 ± 5 ℃ of ambient temperatures, battery was shelved 1-4 hour with 0.1C current charges 16 hours, used the 0.2C current discharge to 1.0V then, the capacity of test battery.
(2) cycle life test
Under the situation of 20 ± 5 ℃ of ambient temperatures; Battery is with the 1C current charges, with-Δ V >=5mV is a termination condition, shelved then 1 hour; Use the 1C current discharge to 1.0V again; Be a circulation, when the discharge capacity of certain circulation be lower than initial capacity 60% the time end loop, measure the cycle-index that is taken place.
Testing equipment is for holding up a day BS-9360.
Test result such as following table:
| Capacity (mAh) | Life-span (cycle-index) | |
| Case study on implementation 1 | 2560 | 350 |
| Control cell | 2500 | 300 |
There is the table of going up visible; The capacity of case study on implementation and cycle life are because the elasticity of battery is lower all than good with reference to battery, help reducing in the process of charging and discharging the compression to barrier film; Protect liquid thereby help barrier film, and can on effecting reaction positive and negative, distribute more electrolyte.
The above is merely the schematic embodiment of the present invention, is not in order to limit scope of invention.For the those of ordinary skill of technical field under the present invention, the equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, being done, revise and combine, all should belong to the scope that the present invention protects.
Claims (3)
1. the preparation method of a chemical cell negative plate comprises starching, oven dry, roll-in, it is characterized in that: said starching is continuous, and two-sided starching and back starching intersection are carried out, and the one side corresponding with it at no positive pole-face adopts back starching; Said two-sided starching and back starching intersection are meant to go up for one section of negative plate and adopt two-sided starching, adopt back starching at ensuing one section, next are again two-sided starchings, so circulate and carry out; Said continuous starching is adopted and is scraped the realization of slurry mould; The said slurry mould of scraping comprises two scrapers, and an end scraper is fixed, and other end scraper is a movable scraper of being regulated control by numerical control device.Realize the surface blending between said two-sided starching and the back starching through movable scraper; The said slurry mould of scraping is arranged on the hopper top that slurry is housed, be provided with in the said hopper fixed base take away to the axis of guide, pass axis of guide entering hopper with base band and scrape the slurry moulding at 5-20mm place under the slurry liquid level; The said slurry mould of scraping is adjusted distance and the length of back starching between two edges of a knife at any time according to technological requirement, and the distance between said two edges of a knife is used to control spreading mass, and the length of said back starching, two-sided starching is definite according to design technology.
2. like the manufacturing approach of the described chemical cell negative plate of arbitrary claim in the claim 1, it is characterized in that: the density of said negative plate is 6.20-6.60g/cm
3
3. the manufacturing approach of chemical cell negative plate as claimed in claim 1 is characterized in that: described roll-in is that roll squeezer parallel in the roller left and right sides and that central axis is arranged on the same horizontal plane carries out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101078058A CN101944607B (en) | 2010-02-09 | 2010-02-09 | Preparation method of negative plate of chemical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101078058A CN101944607B (en) | 2010-02-09 | 2010-02-09 | Preparation method of negative plate of chemical battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101944607A CN101944607A (en) | 2011-01-12 |
| CN101944607B true CN101944607B (en) | 2012-12-12 |
Family
ID=43436490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101078058A Active CN101944607B (en) | 2010-02-09 | 2010-02-09 | Preparation method of negative plate of chemical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101944607B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618068B (en) * | 2013-11-13 | 2016-05-25 | 河南师范大学 | Zinc-nickel battery negative plate and preparation method thereof and the zinc-nickel cell that uses this negative plate |
| CN111029527B (en) * | 2019-12-11 | 2021-06-11 | 宁德新能源科技有限公司 | Negative electrode, and electrochemical device and electronic device including the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581556A (en) * | 2003-08-04 | 2005-02-16 | 三洋电机株式会社 | Drum shape alkali accumulator |
| CN101552335A (en) * | 2009-04-30 | 2009-10-07 | 深圳市豪鹏科技有限公司 | Method for manufacturing battery negative plate |
-
2010
- 2010-02-09 CN CN2010101078058A patent/CN101944607B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581556A (en) * | 2003-08-04 | 2005-02-16 | 三洋电机株式会社 | Drum shape alkali accumulator |
| CN101552335A (en) * | 2009-04-30 | 2009-10-07 | 深圳市豪鹏科技有限公司 | Method for manufacturing battery negative plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101944607A (en) | 2011-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2319109B1 (en) | Battery electrode plate, forming method thereof and battery having the same | |
| US9742031B2 (en) | Lithium battery and the preparation method thereof | |
| KR19980018160A (en) | Manufacturing method of nonaqueous electrolyte battery, electrode plate for nonaqueous electrolyte battery, electrode plate for nonaqueous electrolyte battery and apparatus for manufacturing electrode plate for nonaqueous electrolyte battery | |
| CN102017238A (en) | Positive electrode plate for nonaqueous battery, electrode group for nonaqueous battery and method for producing same, and rectangular nonaqueous secondary battery and method for manufacturing same | |
| CN101867045B (en) | Method for preparing positive plate of nickel hydrogen battery | |
| EP3211695B1 (en) | Method and apparatus for manufacturing electrode for secondary battery | |
| CN100334753C (en) | Positive electrode plate for alkaline battery and making method thereof | |
| CN103430360A (en) | Non-aqueous electrolyte secondary battery and manufacturing method thereof | |
| CN102017237A (en) | Negative electrode plate for nonaqueous battery, electrode group for nonaqueous battery and method for producing same, and tubular nonaqueous secondary battery and method for manufacturing same | |
| CN102017272A (en) | Electrode group for nonaqueous battery and method for producing same, and tubular nonaqueous secondary battery and method for manufacturing same | |
| CN103137945B (en) | The preparation method of electrodes of lithium-ion batteries and surface processing device | |
| CN101552335B (en) | Method for manufacturing battery negative pole piece | |
| CN102405552A (en) | Lithium secondary battery and production method for same | |
| US7914921B2 (en) | Enhanced separators for zinc negative electrodes | |
| JP2009181833A (en) | Non-aqueous secondary battery and method of manufacturing the same | |
| CN113346042A (en) | Electrode for lithium ion secondary battery, and lithium ion secondary battery | |
| CN113140697A (en) | Positive plate, lithium ion battery and preparation method of positive plate | |
| US20160218348A1 (en) | Dual coating method for electrode | |
| CN101944607B (en) | Preparation method of negative plate of chemical battery | |
| CN101183735A (en) | Prismatic nonaqueous electrolyte secondary battery and method for manufacturing the same | |
| CN104868175A (en) | Preparation method for ultrafine cylindrical flexible package lithium ion battery | |
| JP2012059491A (en) | Electrode group for flat-type secondary battery and flat-type secondary battery using the same | |
| CN203218376U (en) | Surface treatment device for lithium ion battery polar piece | |
| JPS60133655A (en) | Positive plate for cylindrical sealed type nickel-cadmium storage battery | |
| CN100334754C (en) | Steel-tape nickel cathode and assemblied battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210722 Address after: 410100 first floor, building 10, advanced energy storage and energy conservation demonstration Industrial Park, No. 169, Section 2, Renmin East Road, Changsha Economic and Technological Development Zone, Hunan Province Patentee after: NATIONAL ENGINEERING RESEARCH OF ADVANCED ENERGY STORAGE MATERIALS Address before: 410205 No. 348, tongzipo West Road, national high tech Development Zone, Changsha City, Hunan Province Patentee before: Hunan Corun New Energy Co.,Ltd. |