CN103887565A - Method for manufacturing super-thick high-energy-density polymer lithium ion battery cell - Google Patents
Method for manufacturing super-thick high-energy-density polymer lithium ion battery cell Download PDFInfo
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- CN103887565A CN103887565A CN201410085822.4A CN201410085822A CN103887565A CN 103887565 A CN103887565 A CN 103887565A CN 201410085822 A CN201410085822 A CN 201410085822A CN 103887565 A CN103887565 A CN 103887565A
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- battery cell
- plastic flexible
- lithium ion
- negative plate
- barrier film
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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
- H01M10/0587—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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- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a method for manufacturing a super-thick high-energy-density polymer lithium ion battery cell. The method comprises the following steps: preparing a positive plate, an isolating membrane and a negative plate; winding the isolating membrane for a half layer, inserting the negative plate, winding the isolating membrane and the negative plate for a layer, inserting the positive plate, and winding the isolating membrane, the negative plate and the positive plate together, wherein the total number of winding layers of the battery cell is 12-76; when the number of the winding layers is 12-36, inserting a plastic hose between the isolating membrane and the positive plate or between the isolating membrane and the negative plate; when the total number of the winding layers is larger than 36, entering a step D; when the total number of the winding layers is less than or equal to 36, entering a step E; when the number of the winding layers of the battery cell is increased to 12-36 in the step D, inserting the plastic hose between the isolating membrane and the positive plate or between the isolating membrane and the negative plate; continuously winding in the step E until the number of the winding layers reaches a preset number; and detaching the plastic hose from the battery cell to obtain the finished product. According to the battery cell produced by the method, the problem that the battery cell is deformed can be solved.
Description
Technical field
The present invention relates to technical field of lithium batteries, relate in particular to a kind of manufacture method of super thick high-energy-density polymer lithium ion battery cell.
Background technology
Due to polymer lithium ion battery cell, to have energy density high, light portable, and the feature such as profile is customizable, along with digital product variation, increases severely to the demand of this kind of battery core.In addition, such as portable power source, the capacity to lithium-ion electric core such as special equipment etc. require to improve, and some large scales, jumbo battery core model demand are increasing, and for example: portable power source monomer battery core capacity has reached 10000mAh, thickness approaches 12.0mm.
Lithium-ion electric core inner pole piece structure has following two kinds at present conventionally: a kind of is more common takeup type pole piece structure, this battery core is by a positive pole, article one, or two barrier films and negative pole by manually, semi-automatic or full automatic winding mechanism, in layer reels and becomes a battery core from the beginning to the end; Another is stacked pole piece structure, this battery core is by positive pole, negative pole and barrier film cut into square little pole piece, then adopt manually, and semi-automatic or full-automatic stack manner is according to positive pole, barrier film, negative pole, positive pole, barrier film, negative pole ... similar fashion stacks several to tens pole pieces, and then is assembled into a battery core.Certainly, also having some other structures, is all the derivative or comprehensive of above two kinds of structures substantially.
Above two kinds of pole piece structures are through the accumulation of exploitation for many years of industry, very ripe, but due to some intrinsic characteristics, pluses and minuses are also more outstanding.Specifically please refer to following table:
Based on the difference of takeup type and lamination type electric core, industry generally adopts takeup type structure to produce medium and small battery core, such as consumer electronics lithium-ion electric core; There is application for medium-and-large-sized electric core winding formula and laminated structure.For partially thick or super thick high energy density lithium ion battery core (thickness is generally greater than 6.0mm), substantially all adopt more efficient takeup type structure, but having relatively distinct issues, be exactly semi-automatic or the problem on deformation of auto reeling generation, that is battery core is in thickness direction out-of-flatness, become S type, sometimes exceed more than 50% than regular meeting, cause high bad ratio, cause the bad ratio of lithium-ion electric core enterprise high, greatly, cost sharply rises in waste.
Cause the reason of super thick Wind lithium ion core distortion to have a lot of aspects, mainly comprise two large aspects: 1, in charge and discharge process, the pole piece bounce-back that particularly cathode pole piece existence is larger is (in charging process, negative pole embeds lithium ion, due to crystal structure becomes greatly), cause battery core internal volume to increase, barrier film constraint becomes large; Barrier film, positive/negative plate cut with winding process in there is tension force to a certain degree, coiling backward pull discharges, and causes barrier film further to fetter battery core.The cumulative stress of above two aspects acts on battery core inside and makes it torsional deformation.Particularly in the electric core architecture of some super thick high-energy-densities, cathode pole piece densification is larger, rebounds larger, and barrier film is thinner, cut with winding tension and tensile deformation greatlyr, adopt thus semi-automatic and battery core deformation extent and proportion of deformation full automatic winding technique also more serious.
Therefore, the problem on deformation that solves super thick takeup type battery core is a difficult problem of lithium electricity industrial circle always, at present, industry is mainly improved problem on deformation by following thinking and mode: 1, and the bounce-back while reducing negative pole charging by improving the pattern of negative material and crystal regularity; 2, improve the thermal contraction of barrier film; 3, reduce from machinery barrier film and the pole piece tension force of cutting while particularly coiling.Above-mentioned measure is to a certain degree improving deformation extent and the ratio of thicker battery core, and still, for the DeGrain that improves of super thick battery core, the problem on deformation of super thick battery core is still the bad item of most critical that affects conforming product rate
Summary of the invention
The present invention provides a kind of manufacture method of super thick high-energy-density polymer lithium ion battery cell for overcoming above-mentioned defect, the battery core that uses the method to reel out can reserve expansion space in battery core inside, alleviate battery core metaboly, keep the chemical property of battery core, be easy to control the size of battery core, the method has simple to operate, production efficiency is high, production cost is low, and the advantage that conforming product rate is high is convenient to promote the use of.
For achieving the above object, the present invention adopts following technical scheme.
A manufacture method for super thick high-energy-density polymer lithium ion battery cell, comprises following procedure of processing:
Steps A, according to composition and engineering requirement, prepare positive plate, barrier film and negative plate, for subsequent use;
Step B, select cell winding device, the half storey of first barrier film being reeled, then insert negative plate, and then barrier film is reeled together with negative plate after one deck, insert positive plate, then barrier film, negative plate are reeled together with positive plate;
The total number of plies of coiling of step C, described battery core is 12-76 layer; In the time that Winding Layer reaches 12-36 layer, plastic flexible pipe is inserted between barrier film and positive plate or negative plate; If reel, total number of plies is greater than 36 layers, enters step D; If reel, total number of plies is less than or equal to 36 layers, enters step e;
When the Winding Layer of step D, described battery core increases 12-36 layer again, again plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
Step e, continuation are reeled, until Winding Layer reaches the setting number of plies;
Step F, take off the battery core that is inserted with plastic flexible pipe from cell winding device, then all plastic flexible pipes are detached from battery core, get product.
Wherein, described plastic flexible pipe is formed by macromolecule polymer material manufacture.
Wherein, described macromolecule polymer material is PP, PE or PC.
Wherein, the diameter of described plastic flexible pipe is 4-8mm.
Wherein, the hardness of described plastic flexible pipe is 300-5000gf.
Wherein, the length of described plastic flexible pipe is greater than the length of described battery core.
Wherein, described cell winding device is semi-automatic electricity core winding machine.
Wherein, described cell winding device is fully automatic electric core winder
Beneficial effect of the present invention is:
The manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell of the present invention, comprises following procedure of processing: steps A, according to composition and engineering requirement, prepare positive plate, barrier film and negative plate, and for subsequent use; Step B, select cell winding device, the half storey of first barrier film being reeled, then insert negative plate, and then barrier film is reeled together with negative plate after one deck, insert positive plate, then barrier film, negative plate are reeled together with positive plate; The total number of plies of coiling of step C, described battery core is 12-76 layer; In the time that Winding Layer reaches 12-36 layer, plastic flexible pipe is inserted between barrier film and positive plate or negative plate; If reel, total number of plies is greater than 36 layers, enters step D; If reel, total number of plies is less than or equal to 36 layers, enters step e; When the Winding Layer of step D, described battery core increases 12-36 layer again, again plastic flexible pipe is inserted between barrier film and positive plate or negative plate; Step e, continuation are reeled, until Winding Layer reaches the setting number of plies; Step F, take off the battery core that is inserted with plastic flexible pipe from cell winding device, then all plastic flexible pipes are detached from battery core, get product; The battery core that uses the method to reel out can reserve in battery core inside certain space, as the inner space of expanding of follow-up battery core, the battery core problem on deformation that the stress collection of drama that solving expands because battery core is inner causes causes, keep the chemical property of battery core, be easy to control the size of battery core, the method implementation is flexible, and manually intubate also can be transformed with optimized device and carry out automatic intubation; Have simple to operately, improve cost low, production efficiency is high, and production cost is low, and the advantage that conforming product rate is high is convenient to promote the use of.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, and this is preferred embodiment of the present invention.
Embodiment 1.
The manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell of the present invention, comprises following procedure of processing:
Steps A, according to composition and engineering requirement, prepare positive plate, barrier film and negative plate, for subsequent use;
Step B, select cell winding device, the half storey of first barrier film being reeled, then insert negative plate, and then barrier film is reeled together with negative plate after one deck, insert positive plate, then barrier film, negative plate are reeled together with positive plate;
The total number of plies of coiling of step C, described battery core is 18 layers; In the time that Winding Layer reaches 12 layers, plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
Step e, continuation are reeled, until Winding Layer reaches the setting number of plies;
Step F, take off the battery core that is inserted with plastic flexible pipe from cell winding device, then all plastic flexible pipes are detached from battery core, get product.
The plastic flexible pipe of the present embodiment is formed by macromolecule polymer material manufacture.
Preferably, described macromolecule polymer material is PP.
The diameter of the plastic flexible pipe of the present embodiment is 4mm.
The hardness of the plastic flexible pipe of the present embodiment is 300gf.
The length of the plastic flexible pipe of the present embodiment is greater than the length of described battery core.
The cell winding device of the present embodiment is fully automatic electric core winder.
Embodiment 2.
The manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell of the present invention, comprises following procedure of processing:
Steps A, according to composition and engineering requirement, prepare positive plate, barrier film and negative plate, for subsequent use;
Step B, select cell winding device, the half storey of first barrier film being reeled, then insert negative plate, and then barrier film is reeled together with negative plate after one deck, insert positive plate, then barrier film, negative plate are reeled together with positive plate;
The total number of plies of coiling of step C, described battery core is 38 layers; In the time that Winding Layer reaches 14 layers, plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
When the Winding Layer of step D, described battery core increases by 14 layers again, again plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
Step e, continuation are reeled, until Winding Layer reaches the setting number of plies;
Step F, take off the battery core that is inserted with plastic flexible pipe from cell winding device, then all plastic flexible pipes are detached from battery core, get product.
The plastic flexible pipe of the present embodiment is formed by macromolecule polymer material manufacture.
Preferably, described macromolecule polymer material is PE.
The diameter of the plastic flexible pipe of the present embodiment is 5mm.
The hardness of the plastic flexible pipe of the present embodiment is 2000gf.
The length of the plastic flexible pipe of the present embodiment is greater than the length of described battery core.
The cell winding device of the present embodiment is semi-automatic electricity core winding machine.
Embodiment 3.
The manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell of the present invention, comprises following procedure of processing:
Steps A, according to composition and engineering requirement, prepare positive plate, barrier film and negative plate, for subsequent use;
Step B, select cell winding device, the half storey of first barrier film being reeled, then insert negative plate, and then barrier film is reeled together with negative plate after one deck, insert positive plate, then barrier film, negative plate are reeled together with positive plate;
The total number of plies of coiling of step C, described battery core is 54 layers; In the time that Winding Layer reaches 22 layers, plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
When the Winding Layer of step D, described battery core increases by 22 layers again, again plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
Step e, continuation are reeled, until Winding Layer reaches the setting number of plies;
Step F, take off the battery core that is inserted with plastic flexible pipe from cell winding device, then all plastic flexible pipes are detached from battery core, get product.
The plastic flexible pipe of the present embodiment is formed by macromolecule polymer material manufacture.
Preferably, described macromolecule polymer material is PC.
The diameter of the plastic flexible pipe of the present embodiment is 6mm.
The hardness of the plastic flexible pipe of the present embodiment is 3500gf.
The length of the plastic flexible pipe of the present embodiment is greater than the length of described battery core.
The cell winding device of the present embodiment is fully automatic electric core winder.
Embodiment 4.
The manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell of the present invention, comprises following procedure of processing:
Steps A, according to composition and engineering requirement, prepare positive plate, barrier film and negative plate, for subsequent use;
Step B, select cell winding device, the half storey of first barrier film being reeled, then insert negative plate, and then barrier film is reeled together with negative plate after one deck, insert positive plate, then barrier film, negative plate are reeled together with positive plate;
The total number of plies of coiling of step C, described battery core is 76 layers; In the time that Winding Layer reaches 30 layers, plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
When the Winding Layer of step D, described battery core increases by 30 layers again, again plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
Step e, continuation are reeled, until Winding Layer reaches the setting number of plies;
Step F, take off the battery core that is inserted with plastic flexible pipe from cell winding device, then all plastic flexible pipes are detached from battery core, get product.
The plastic flexible pipe of the present embodiment is formed by macromolecule polymer material manufacture.
Preferably, described macromolecule polymer material is PP.
The diameter of the plastic flexible pipe of the present embodiment is 8mm.
The hardness of the plastic flexible pipe of the present embodiment is 5000gf.
The length of the plastic flexible pipe of the present embodiment is greater than the length of described battery core.
The cell winding device of the present embodiment is fully automatic electric core winder.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although the present invention has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not depart from essence and the scope of technical solution of the present invention.
Claims (8)
1. a manufacture method for super thick high-energy-density polymer lithium ion battery cell, is characterized in that, comprises following procedure of processing:
Steps A, according to composition and engineering requirement, prepare positive plate, barrier film and negative plate, for subsequent use;
Step B, select cell winding device, the half storey of first barrier film being reeled, then insert negative plate, and then barrier film is reeled together with negative plate after one deck, insert positive plate, then barrier film, negative plate are reeled together with positive plate;
The total number of plies of coiling of step C, described battery core is 12-76 layer; In the time that Winding Layer reaches 12-36 layer, plastic flexible pipe is inserted between barrier film and positive plate or negative plate; If reel, total number of plies is greater than 36 layers, enters step D; If reel, total number of plies is less than or equal to 36 layers, enters step e;
When the Winding Layer of step D, described battery core increases 12-36 layer again, again plastic flexible pipe is inserted between barrier film and positive plate or negative plate;
Step e, continuation are reeled, until Winding Layer reaches the setting number of plies;
Step F, take off the battery core that is inserted with plastic flexible pipe from cell winding device, then all plastic flexible pipes are detached from battery core, get product.
2. the manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell according to claim 1, is characterized in that: described plastic flexible pipe is formed by macromolecule polymer material manufacture.
3. the manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell according to claim 2, is characterized in that: described macromolecule polymer material is PP, PE or PC.
4. the manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell according to claim 1, is characterized in that: the diameter of described plastic flexible pipe is 4-8mm.
5. the manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell according to claim 1, is characterized in that: the hardness of described plastic flexible pipe is 300-5000gf.
6. the manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell according to claim 1, is characterized in that: the length of described plastic flexible pipe is greater than the length of described battery core.
7. the manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell according to claim 1, is characterized in that: described cell winding device is semi-automatic electricity core winding machine.
8. the manufacture method of a kind of super thick high-energy-density polymer lithium ion battery cell according to claim 1, is characterized in that: described cell winding device is fully automatic electric core winder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410085822.4A CN103887565A (en) | 2014-03-10 | 2014-03-10 | Method for manufacturing super-thick high-energy-density polymer lithium ion battery cell |
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| CN201410085822.4A CN103887565A (en) | 2014-03-10 | 2014-03-10 | Method for manufacturing super-thick high-energy-density polymer lithium ion battery cell |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979582A (en) * | 2015-05-27 | 2015-10-14 | 深圳市动力聚能科技有限公司 | Low-deformation rolling type flexible package lithium-ion battery and production method thereof |
| CN104993176A (en) * | 2015-07-27 | 2015-10-21 | 湖北宇隆新能源有限公司 | Winding type lithium ion electric core body and preparation method thereof |
| CN106910944A (en) * | 2017-04-12 | 2017-06-30 | 东莞市和明机械有限公司 | A kind of device of the anti-battery core deformation of automatic inserted sheet |
| CN108336418A (en) * | 2018-03-27 | 2018-07-27 | 江苏塔菲尔新能源科技股份有限公司 | A kind of winding process improving battery core dilatancy |
| CN109509917A (en) * | 2018-11-28 | 2019-03-22 | 惠州锂威新能源科技有限公司 | A kind of winding process of battery battery core |
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| CN102983363A (en) * | 2012-08-23 | 2013-03-20 | 珠海光宇电池有限公司 | Rolling core, polymer lithium ion battery and preparation method |
| CN103151551A (en) * | 2011-12-06 | 2013-06-12 | 丰田自动车株式会社 | Method of battery production |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979582A (en) * | 2015-05-27 | 2015-10-14 | 深圳市动力聚能科技有限公司 | Low-deformation rolling type flexible package lithium-ion battery and production method thereof |
| CN104993176A (en) * | 2015-07-27 | 2015-10-21 | 湖北宇隆新能源有限公司 | Winding type lithium ion electric core body and preparation method thereof |
| CN106910944A (en) * | 2017-04-12 | 2017-06-30 | 东莞市和明机械有限公司 | A kind of device of the anti-battery core deformation of automatic inserted sheet |
| CN108336418A (en) * | 2018-03-27 | 2018-07-27 | 江苏塔菲尔新能源科技股份有限公司 | A kind of winding process improving battery core dilatancy |
| CN109509917A (en) * | 2018-11-28 | 2019-03-22 | 惠州锂威新能源科技有限公司 | A kind of winding process of battery battery core |
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