CN102055014A - Lithium ion battery without diaphragm - Google Patents
Lithium ion battery without diaphragm Download PDFInfo
- Publication number
- CN102055014A CN102055014A CN2010102364663A CN201010236466A CN102055014A CN 102055014 A CN102055014 A CN 102055014A CN 2010102364663 A CN2010102364663 A CN 2010102364663A CN 201010236466 A CN201010236466 A CN 201010236466A CN 102055014 A CN102055014 A CN 102055014A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- electrode tab
- pole piece
- battery
- 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.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 12
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims abstract description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims abstract description 5
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 5
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 5
- 239000003792 electrolyte Substances 0.000 claims abstract description 3
- 230000004888 barrier function Effects 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005234 chemical deposition Methods 0.000 abstract 3
- OQMIRQSWHKCKNJ-UHFFFAOYSA-N 1,1-difluoroethene;1,1,2,3,3,3-hexafluoroprop-1-ene Chemical group FC(F)=C.FC(F)=C(F)C(F)(F)F OQMIRQSWHKCKNJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 230000005518 electrochemistry Effects 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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)
- Secondary Cells (AREA)
Abstract
The invention discloses a lithium ion battery without a diaphragm. The lithium ion battery comprises a positive electrode tab, a negative electrode tab and electrolyte, the chemical deposition treatment is carried out to the surfaces of the electrode tabs, a layer of uniform organic chemical film is deposited on the surface of the electrode tab, and the chemical deposition treatment can be realized by adopting the deposition method. The major components of the deposited organic chemical film comprise methyl acetate, vinylidene fluoride fluoride-hexafluoropropylene polymer, silicon dioxide, diethyl carbonate, n-butyl alcohol and dimethyl sulfoxide; the thickness of the organic chemical film is between 10 um and 50 um; the organic chemical film is deposited on at least one of the positive electrode tab and the negative electrode tab; and the electrode tab is rolled and cut before the chemical deposition treatment. Through the technical scheme, the lithium ion battery without the diaphragm is realized, the cost of the battery is reduced, and the safety performance and the electrochemistry performance of the battery are facilitated to be improved as the combination of the deposited organic chemical film and the electrode tab is tighter. The beneficial effects play a good role in benefiting the application of the lithium ion battery on an electric automobile.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly a kind of lithium ion battery that does not have barrier filmization.
Background technology
21 century, energy crisis was increasingly serious; wherein; automobile fuel has occupied about 60% of whole fuel consume; in order to tackle the demand of people to the fuel equal energy source; national governments are all in positive trying every possible means, yet the intrinsic fuel of occurring in nature is limited; therefore, the car that taps a new source of energy becomes the task of top priority.
Lithium ion battery is pollution-free, power density is high, voltage is high, memory-less effect, and it is used as the energy of electric automobile, has obtained people's extensive approval.National governments throw each link that huge fund is studied the lithium ion battery industrialization in succession, and have obtained great successes, make that the range of application of lithium ion battery is further enlarged.At present, the research and development of electric vehicle lithium ion battery are affecting the nerve of national governments and research and development institution, and the problem of its existence also needs further research.
Wherein, fail safe, life-span, cost problem are that lithium ion battery wants industrialization to use three subject matters that institute must solution, their solution will strengthen the trust of people to lithium ion battery greatly, reduce battery cost, thereby make the widely-used possibility that becomes of electric automobile.
Power lithium-ion battery is had relatively high expectations to barrier film, and the barrier film source mainly depends on import at present, causes the battery cost high.In order to reduce the battery cost, more domestic manufacturers are also greatly developing the production domesticization membrane technique, and have obtained comparatively gratifying achievement, but the stability of barrier film is compared with external product a certain distance is also arranged.Simultaneously, this battery diaphragm is owing to poor heat stability, and (＞80 ℃) cause battery short circuit with regard to having very big contraction under the higher temperature, cause security incident.
At present, be the security performance, reduction battery cost, the lifting battery performance that solve battery, people are doing a large amount of work at different directions, wherein battery pole piece are carried out the deep discussion that some optimization processes have attracted the research staff.
Patent of invention CN1838468A employing is prolonged the stream method and be coated with one deck inorganic particulate hybrid films on cathode pole piece, and the first charge-discharge capacity of gained battery can reach 142mAh/g, and (positive electrode is LiCoO
2), the capacity attenuation rate is 0.4 ‰.Yet, exist problem to be solved is much arranged because prior art is carried out chemical treatment to electrodes of lithium-ion batteries, as the lack of homogeneity that the pole piece surface chemistry applies, stability is bad, and the pollution that applies chemical material is big, the poor operability of equipment etc. under the normal temperature.
Summary of the invention
At the problems referred to above, the invention provides a kind of is the lithium ion battery that is used for the no barrier filmization of electric automobile or hybrid vehicle.
The technical solution adopted in the present invention mainly is anodal in the battery, cathode pole piece to be carried out surface chemistry apply, and the functional similarity of gained coat film and barrier film plays the transmission lithium ion, prevents the directly effect of contact of both positive and negative polarity pole piece.
The present invention does not have the barrier film lithium ion battery, comprises positive pole, cathode pole piece and electrolyte, and wherein: described pole piece has carried out the surface chemistry coating processing, with at pole piece surface-coated layer of even organic chemistry film.
Described chemical coating processing can adopt the method for coating to realize.
The main component of the organic chemistry film of described coating comprises methyl acetate, vinylidene fluoride-hexafluoropropylene copolymer, silicon dioxide, diethyl carbonate, n-butanol, dimethyl sulfoxide (DMSO).
The thickness of described organic chemistry film is between 10～50um.
Described pole piece is at least a in positive plate and the negative plate.
Described pole piece is for through roll-in, pole piece after cutting.
Pass through such scheme, realized the no barrier filmization of lithium ion battery, reduced the battery cost, simultaneously because the barrier film that applies combines tightr with pole piece, help improving the security performance and the chemical property of battery, relatively be fit to electric automobile or hybrid vehicle and use, these beneficial effects to lithium ion battery the application on electric automobile played good facilitation.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with example, but the present invention not only is confined to the following examples.
Embodiment one:
1) positive and negative electrode film-making:
The anode pole piece preparation:
A) press positive electrode active materials: conductive agent: the part by weight blended anode slurry of binding agent=91: 4: 5 adds suitable nmp solvent then and mixes;
B) on the coating machine anode sizing agent is being coated on the aluminium foil matrix;
C) toast, roll-in, cutting edge.
The cathode pole piece preparation:
A) press negative active core-shell material: conductive agent: the part by weight mixing cathode size of binding agent=95: 1: 4 adds suitable water then and mixes as solvent;
B) on the coating machine cathode size is being coated on the Copper Foil matrix;
C) toast, roll-in, cutting edge.
2) configuration applies the pole piece chemical sizwe: by methyl acetate, vinylidene fluoride-hexafluoropropylene copolymer (PVDF-HFP), silicon dioxide, diethyl carbonate (DEC), n-butanol, the shared mass fraction of each raw material of dimethyl sulfoxide (DMSO) be: methyl acetate 60%, PVDF-HFP8%, silicon dioxide 2%, DEC 15%, n-butanol 10%, dimethyl sulfoxide (DMSO) 5% carry out dispersing and mixing, obtain mixed slurry;
3) chemical sizwe that configures the surface chemistry of positive and negative electrode pole piece coating: with step 2) is coated on coating machine on the finished product positive and negative electrode pole piece for preparing in the step 1);
4) baking of coating back positive and negative electrode pole piece: the both positive and negative polarity pole piece after will applying carries out 90～120 ℃ gradient type baking process;
5) pole piece in the step 4) is cut, cut to the needed size of design battery;
6) the positive and negative electrode pole piece that cuts with the step 5) branch prepares battery;
7) the electric core that step 6) is prepared carries out lug welding, encapsulation, and fluid injection, preliminary filling change into.
8) battery that step 7) is prepared is tested.
Test result shows: capacity residue 90% after the battery circulation 500 times, and can be safely by acupuncture, short circuit, push, overcharge, cross and safety test such as put, relatively be fit to electric automobile or hybrid vehicle and use.
Claims (6)
1. a no barrier film lithium ion battery comprises positive pole, cathode pole piece and electrolyte, and it is characterized in that: described pole piece has carried out the surface chemistry coating processing, with at pole piece surface-coated layer of even organic chemistry film.
2. no barrier film lithium ion battery according to claim 1 is characterized in that: described chemical treatment adopts the method that applies to realize.
3. no barrier film lithium ion battery according to claim 2 is characterized in that: the main component of the organic chemistry film of described coating comprises methyl acetate, vinylidene fluoride-hexafluoropropylene copolymer, silicon dioxide, diethyl carbonate, n-butanol, dimethyl sulfoxide (DMSO).
4. no barrier film lithium ion battery according to claim 3, it is characterized in that: the thickness of described organic chemistry film is between 10～50um.
5. no barrier film lithium ion battery according to claim 4 is characterized in that: described pole piece is at least a in positive plate and the negative plate.
6. no barrier film lithium ion battery according to claim 5 is characterized in that: described pole piece is for through roll-in, pole piece after cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102364663A CN102055014A (en) | 2010-07-22 | 2010-07-22 | Lithium ion battery without diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102364663A CN102055014A (en) | 2010-07-22 | 2010-07-22 | Lithium ion battery without diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102055014A true CN102055014A (en) | 2011-05-11 |
Family
ID=43959129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102364663A Pending CN102055014A (en) | 2010-07-22 | 2010-07-22 | Lithium ion battery without diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102055014A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958112A (en) * | 2016-06-24 | 2016-09-21 | 合肥国轩高科动力能源有限公司 | Diaphragm-free lithium ion battery roll core and preparation method thereof |
| CN106099172A (en) * | 2016-07-19 | 2016-11-09 | 浙江超威创元实业有限公司 | A kind of aseptate lithium ion battery |
| CN107785607A (en) * | 2016-08-25 | 2018-03-09 | 中国科学院金属研究所 | A kind of new structure sodium-ion battery and preparation method thereof |
| CN108630864A (en) * | 2017-03-24 | 2018-10-09 | 深圳先进技术研究院 | A kind of cathode and diaphragm integral structure and preparation method thereof and battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964102A (en) * | 2004-11-10 | 2007-05-16 | 索尼株式会社 | Anode and battery |
| CN101436655A (en) * | 2007-11-12 | 2009-05-20 | 中信国安盟固利新能源科技有限公司 | Cathode pole piece of lithium ion secondary battery and preparation method thereof |
-
2010
- 2010-07-22 CN CN2010102364663A patent/CN102055014A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964102A (en) * | 2004-11-10 | 2007-05-16 | 索尼株式会社 | Anode and battery |
| CN101436655A (en) * | 2007-11-12 | 2009-05-20 | 中信国安盟固利新能源科技有限公司 | Cathode pole piece of lithium ion secondary battery and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《电源技术》 20090831 安富强等 负极涂膜对锂离子电池性能的影响 654-657 1-6 第33卷, 第8期 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958112A (en) * | 2016-06-24 | 2016-09-21 | 合肥国轩高科动力能源有限公司 | Diaphragm-free lithium ion battery roll core and preparation method thereof |
| CN106099172A (en) * | 2016-07-19 | 2016-11-09 | 浙江超威创元实业有限公司 | A kind of aseptate lithium ion battery |
| CN106099172B (en) * | 2016-07-19 | 2018-09-11 | 浙江超威创元实业有限公司 | A kind of aseptate lithium ion battery |
| CN107785607A (en) * | 2016-08-25 | 2018-03-09 | 中国科学院金属研究所 | A kind of new structure sodium-ion battery and preparation method thereof |
| CN107785607B (en) * | 2016-08-25 | 2020-01-03 | 中国科学院金属研究所 | Sodium ion battery with novel structure and preparation method thereof |
| CN108630864A (en) * | 2017-03-24 | 2018-10-09 | 深圳先进技术研究院 | A kind of cathode and diaphragm integral structure and preparation method thereof and battery |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110511 |