CN109687032A - A kind of design method of lithium ion battery structure - Google Patents
A kind of design method of lithium ion battery structure Download PDFInfo
- Publication number
- CN109687032A CN109687032A CN201811628094.1A CN201811628094A CN109687032A CN 109687032 A CN109687032 A CN 109687032A CN 201811628094 A CN201811628094 A CN 201811628094A CN 109687032 A CN109687032 A CN 109687032A
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- China
- Prior art keywords
- lithium ion
- ion battery
- design method
- battery structure
- 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
-
- 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
Abstract
The present invention provides a kind of new type lithium ion battery construction design method, lithium ion battery structure is designed as anode and negative electrode material is ipsilateral is coated on film, or it will be inside positive electrode and negative electrode material insertion solid electrolyte material, the structure design advantage is to make the travel motion of lithium ion laterally to occur in film or solid electrolyte, bring internal short-circuit hidden danger is crushed to weaken breakage of thin film applied or solid electrolyte, improve the safety in utilization of lithium ion battery, this method is novel in design, it is easy to large-scale industrial production, there is good application prospect.
Description
Technical field
The invention belongs to field of structural design, and in particular to arrive a kind of lithium ion battery structure design method, be applied to lithium
Ion battery field.
Technical background
Lithium ion battery energy density height, output power, voltage are high, self discharge is small, operating temperature range is wide, memoryless
Effect and it is environmentally friendly the advantages that, be widely used to electronic equipment, electric vehicle, rail traffic, extensive energy storage and aviation
The fields such as space flight.The structure of lithium ion battery is broadly divided into " laminated structure " and " winding by the difference of its pole piece assembly method
Two kinds of formula structure ", corresponding " lamination " and " winding " two kinds of techniques.
Lamination process is to cut and be overlapped into small battery core monomer with diaphragm anode, cathode into pieces, then by small battery core monomer
It stacks and is together in parallel, form the manufacturing process of one big battery core.
Lamination size is more flexible, lithium ion battery can be made into triangle, circle etc., and pole piece is easy to be examined
It looks into or selects；But its mechanization is not easily accomplished, and pole piece will be punched, and section is more, is easy to pierce through diaphragm, is caused short circuit, easily
Side reaction is generated, and the tension of battery is not easily controlled.
Winding process is by materials such as positive plate, negative electrode tab, diaphragm, anode ear, negative electrode lug, protective glue band, terminal adhesive tapes
It is fixed in equipment, equipment completes battery core production by unreeling.
Winding-structure mechanization is easy, and fast speed, homogeneity is more guaranteed, is conducive to be mass produced；But its front
It is inconsistent with the tension of side, cause internal-response uneven, the coating of pole piece is required high.It is required that pole piece layer has certain bullet
Property, otherwise bending place it is easy to fall off or fracture, due to electrode one from pole piece from draw, there are problems that field distribution, it is desirable that
Electrode layer has preferable electric conductivity.
So the structure design of existing lithium ion battery is there are many drawbacks, such as it is more outstanding be energy density compared with
Low and safety issue, so the structure design of new type lithium ion battery is particularly important the development of lithium ion battery.This
The structure of invention designs, can solve to a certain extent lithium ion battery energy density is lower and safety issue.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of design methods of lithium ion battery structure.
The object of the invention is realized by following proposal: a kind of design method of lithium ion battery structure, preparing material includes:
Film or 3D printing have the solid electrolyte of empty slot, include the following steps:
(1) by positive electrode be coated on film two sides or insert electrolyte membrance empty slot, dry solidification, wherein it is described just
Pole material is nickel-cobalt-manganese ternary material: nickel-cobalt-manganese ternary material does active material, and acetylene black does conductive agent, and PVDF makees binder,
NMP makees solvent, the mixed liquor being made into；
(2) negative electrode material is coated on film two sides or inserts the empty slot of electrolyte membrance, dry solidification, the negative electrode material
Can be graphite material: graphite material does active material, and acetylene black does conductive agent, and PVDF makees binder, and NMP does what solvent was made into
Mixed liquor；
(3) core material for obtaining above step encapsulates.
Wherein, the film is cellulosic separator or polyoxyethylene (PEO) base electrolyte.
In step (1), the active material mass fraction is 50%-80%, and conductive agent mass fraction is 10%-30%, bonding
Agent PVDF mass fraction is 10%-20%.
On the basis of above scheme, in step (1), the PVDF concentration are as follows: 0.02g/ml-0.04g/ml.
On the basis of above scheme, in step (1), drying temperature is 80 DEG C -100 DEG C, drying time 4h-12h.
In step (2), the active material mass fraction is 50%-80%；Conductive agent mass fraction is 10%-30%, bonding
Agent PVDF mass fraction is 10%-20%.
On the basis of above scheme, in step (2), the PVDF concentration is 0.02g/ml-0.04g/ml.
On the basis of above scheme, in step (2), drying temperature is 80 DEG C -100 DEG C, drying time 4-12h.
Structure of the invention design advantage is to make the travel motion of lithium ion laterally to occur in film or solid electrolyte,
It is crushed bring internal short-circuit hidden danger to weaken breakage of thin film applied or solid electrolyte, improves the use of lithium ion battery
Safety, this method is novel in design, is easy to large-scale industrial production, there is good application prospect.
A kind of new type lithium ion battery construction design method provided by the present invention, passes through the battery structure solution of " plane formula "
The long-standing energy density of lithium ion battery of having determined is lower and safety issue, and improves all-solid lithium-ion battery
It is flexible.
Detailed description of the invention
Fig. 1 is battery core schematic diagram obtained in embodiment 1；
Fig. 2 is battery core schematic front view obtained in embodiment 2；
Rely on solid electrolyte as the medium for the diaphragm and lithium ion transport for separating positive and negative pole material.
Fig. 3 is battery core schematic side view obtained in embodiment 2.
Rely on solid electrolyte as the medium for the diaphragm and lithium ion transport for separating positive and negative pole material.
Specific embodiment
The present invention is further described below by specific embodiment and in conjunction with attached drawing, but is not intended to limit the present invention.
Material prepares:
(1) nickel-cobalt-manganese ternary material positive electrode: nickel-cobalt-manganese ternary material is active material, mass fraction 50%-80%；Acetylene
It is black to be conductive agent, mass fraction 10%-30%；Concentration is that the PVDF of 0.02g/ml-0.04g/ml makees binder, and mass fraction is
10%-20%；NMP makees solvent, the mixed liquor being made into.
(2) graphite cathode material: graphite material is active material, mass fraction 50%-80%；Acetylene black does conductive agent,
Mass fraction is 10%-30%；Concentration is that the PVDF of 0.02g/ml-0.04g/ml is binder, mass fraction 10%-20%；NMP
Cook the mixed liquor that solvent is made into.
Embodiment 1
As shown in Figure 1, battery core schematic diagram obtained in the present embodiment, using cellulosic separator as the thin of separation positive and negative pole material
Film is coated with the positive and negative pole material of cross shaped head, using electrolyte as the medium of lithium ion transport on diaphragm.
A kind of diaphragm/electrolyte/anode/cathode " plane formula " construction design method of the invention, as follows:
(1) nickel-cobalt-manganternary ternary anode material is coated on cellulosic separator two sides with shape shown in Fig. 1, the dry 12h at 80 DEG C
Solidification；
(2) graphite cathode material is coated on cellulosic separator two sides with shape shown in Fig. 1, the dry 12h solidification at 100 DEG C；
(3) above-mentioned material is immersed into electrolyte and encapsulated.
Embodiment 2
A kind of solid electrolyte of the invention/anode/cathode " plane formula " construction design method, if Fig. 2 is in the present embodiment
Obtained battery core schematic front view relies on solid electrolyte as the matchmaker for the diaphragm and lithium ion transport for separating positive and negative pole material
It is situated between；Battery core schematic side view obtained in Fig. 3 the present embodiment, rely on solid electrolyte as separate positive and negative pole material diaphragm with
The medium of lithium ion transport.
Specifically as follows:
(1) nickel-cobalt-manganternary ternary anode material is inserted into polyoxyethylene (PEO) base electrolyte empty slot with shape shown in Fig. 2, Fig. 3,
Dry 12h solidification at 80 DEG C；
(2) graphite cathode material is inserted into polyoxyethylene (PEO) base electrolyte empty slot with shape shown in Fig. 2, Fig. 3, at 100 DEG C
Dry 12h solidification；
(3) above-mentioned material is encapsulated.
The above is only the citing of embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improve and become
Type also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of design method of lithium ion battery structure, which is characterized in that preparing material includes: that film or 3D printing have
The solid electrolyte of empty slot, includes the following steps:
(1) by positive electrode be coated on film two sides or insert electrolyte membrance empty slot, dry solidification, wherein it is described just
Pole material is nickel-cobalt-manganese ternary material: nickel-cobalt-manganese ternary material does active material, and acetylene black does conductive agent, and PVDF makees binder,
NMP makees solvent, the mixed liquor being made into；
(2) negative electrode material is coated on film two sides or inserts the empty slot of electrolyte membrance, dry solidification, the negative electrode material
Can be graphite material: graphite material does active material, and acetylene black does conductive agent, and PVDF makees binder, and NMP does what solvent was made into
Mixed liquor；
(3) core material for obtaining above step encapsulates.
2. the design method of lithium ion battery structure as described in claim 1, which is characterized in that the film be cellulose every
Film or polyoxyethylene (PEO) base electrolyte.
3. the design method of lithium ion battery structure as described in claim 1, which is characterized in that activity described in step (1)
Material mass score is 50%-80%, and conductive agent mass fraction is 10%-30%, and binder PVDF mass fraction is 10%-20%.
4. the design method of lithium ion battery structure as claimed in claim 1 or 3, which is characterized in that described in step (1)
PVDF concentration are as follows: 0.02g/ml-0.04g/ml.
5. the design method of lithium ion battery structure as described in claim 1, which is characterized in that in step (1), dry temperature
Degree is 80 DEG C -100 DEG C, drying time 4h-12h.
6. the design method of lithium ion battery structure as described in claim 1, which is characterized in that in step (2), the activity
Material mass score is 50%-80%；Conductive agent mass fraction is 10%-30%, and binder PVDF mass fraction is 10%-20%.
7. the design method of lithium ion battery structure as claimed in claim 1 or 6, which is characterized in that described in step (2)
PVDF concentration be 0.02g/ml-0.04g/ml.
8. the design method of lithium ion battery structure as described in claim 1, which is characterized in that in step (2), dry temperature
Degree is 80 DEG C -100 DEG C, drying time 4-12h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811628094.1A CN109687032A (en) | 2018-12-28 | 2018-12-28 | A kind of design method of lithium ion battery structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811628094.1A CN109687032A (en) | 2018-12-28 | 2018-12-28 | A kind of design method of lithium ion battery structure |
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| CN201811628094.1A Pending CN109687032A (en) | 2018-12-28 | 2018-12-28 | A kind of design method of lithium ion battery structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459811A (en) * | 2019-08-20 | 2019-11-15 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of lithium ion battery structure design method |
| CN112186257A (en) * | 2020-08-28 | 2021-01-05 | 西安交通大学 | Three-dimensional lithium battery preparation method based on direct-writing forming 3D printing technology |
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| CN1470083A (en) * | 2000-10-20 | 2004-01-21 | ��ʡ��ѧԺ | Reticulated and controlled porosity battery structures |
| US20080241665A1 (en) * | 2007-03-29 | 2008-10-02 | Tdk Corporation | All-solid-state lithium-ion secondary battery and production method thereof |
| CN103247823A (en) * | 2013-04-19 | 2013-08-14 | 清华大学 | All-solid lithium-ion battery and manufacturing method thereof |
| CN206976499U (en) * | 2017-07-03 | 2018-02-06 | 中能国盛动力电池技术（北京）股份公司 | A kind of all-solid-state battery |
| TW201843875A (en) * | 2017-03-20 | 2018-12-16 | 炳榮 謝 | Printed planar lithium-ion batteries |
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2018
- 2018-12-28 CN CN201811628094.1A patent/CN109687032A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470083A (en) * | 2000-10-20 | 2004-01-21 | ��ʡ��ѧԺ | Reticulated and controlled porosity battery structures |
| US20080241665A1 (en) * | 2007-03-29 | 2008-10-02 | Tdk Corporation | All-solid-state lithium-ion secondary battery and production method thereof |
| CN103247823A (en) * | 2013-04-19 | 2013-08-14 | 清华大学 | All-solid lithium-ion battery and manufacturing method thereof |
| TW201843875A (en) * | 2017-03-20 | 2018-12-16 | 炳榮 謝 | Printed planar lithium-ion batteries |
| CN206976499U (en) * | 2017-07-03 | 2018-02-06 | 中能国盛动力电池技术（北京）股份公司 | A kind of all-solid-state battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459811A (en) * | 2019-08-20 | 2019-11-15 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of lithium ion battery structure design method |
| CN112186257A (en) * | 2020-08-28 | 2021-01-05 | 西安交通大学 | Three-dimensional lithium battery preparation method based on direct-writing forming 3D printing technology |
| CN112186257B (en) * | 2020-08-28 | 2021-12-28 | 西安交通大学 | Three-dimensional lithium battery preparation method based on direct-writing forming 3D printing technology |
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Application publication date: 20190426 |