CN205508953U - Positive negative pole of lithium ion battery of double -coat is extremely rolled up - Google Patents
Positive negative pole of lithium ion battery of double -coat is extremely rolled up Download PDFInfo
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- CN205508953U CN205508953U CN201620234889.4U CN201620234889U CN205508953U CN 205508953 U CN205508953 U CN 205508953U CN 201620234889 U CN201620234889 U CN 201620234889U CN 205508953 U CN205508953 U CN 205508953U
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- external coating
- lithium ion
- ion battery
- pole
- pole piece
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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
Abstract
The utility model discloses a positive negative pole of lithium ion battery of double -coat is extremely rolled up, it includes substrate, undercoating and external coating. The substrate is a metal forming, the substrate mass flow body two sides coating in place that evenly coats, and both combine the lithium ion battery who constitutes conventional structure extremely to roll up. The utility model discloses a further improvement electrode pole piece under the high magnification lithium ion embedding with deviate from the ability, add on interior coating surface fixed and scribble the one deck external coating. The material of external coating is decided according to waiting to make electrode pole piece polarity, and the external coating material of making anodal pole piece is 2~20mgcm2 for activated carbon, activated carbon solidification back surface density, and thickness is 50~200 mu m, the external coating material of preparation negative pole pole piece is the hard carbon, and hard carbon solidification back surface density is 2~16mgcm2, and thickness is 40~180 mu m. The adapted the utility model discloses a lithium ion battery rate properties is good, and circulation long service life can support super high -rate discharge in the twinkling of an eye, has energy density height, advantage such as with low costs moreover.
Description
Technical field
This utility model relates to a kind of lithium ion battery accessory, and specifically, this utility model relates to a kind of lithium-ion electric
Positive and negative electrode pole, pond is rolled up, the lithium ion battery plus-negative plate pole volume of a kind of double-coat.
Background technology
The base material making lithium ion battery positive and negative electrode pole volume is metal forming.The aluminium foil of scale coats by positive-active
Material and conductive agent, binding agent and the slurry of solvent composition, form the positive pole pole volume of external coating after drying；It addition, fixed
Coat the slurry being made up of with conductive agent, binding agent and solvent negative electrode active material on the Copper Foil of chi, formed external after drying
The negative pole pole volume of coating, positive and negative electrode pole volume is the raw material for making lithium ion battery positive and negative electrode pole piece.Use prior art
The positive and negative electrode pole piece steady quality made, it is possible to meet lithium ion battery and apply requirement in normal state.But, existing
Positive and negative electrode pole piece is arranged in lithium ion battery, and under high magnification state, service life cycle is short.Tracing it to its cause is lithium-ion electric
Pond is in charging process, and lithium ion is deviate from from positive pole until embedding cathode pole piece surface, when adding Lithium-ion embeding process
Between short, resistance big, have part lithium ion to be deposited on cathode pole piece surface and form Li dendrite, thus strengthen lithium ion battery sorrow and slow down
Degree.Now, the industry, in order to slow down the generation of the problems referred to above, have employed two ways targetedly, and one is to reduce both positive and negative polarity
Pole piece thickness；Two is to strengthen conductive agent deal in positive and negative electrode rolls up external coating, to improve each point voltage of positive and negative electrode pole piece
Concordance, thus shorten the time-consuming of embedding lithium ion process.The battery energy density that technique is made is relatively low, and produces
Substrate metal paper tinsel and the barrier film for layer insulation consume big problem.Thus, technique improves and can not fundamentally solve
The lithium ion battery positive and negative plate problem that service life cycle is short under high magnification state.
Utility model content
This utility model mainly overcomes the deficiency that existing goods lithium ion battery plus-negative plate pole is rolled up, and proposes a kind of by adding layer
The lithium ion battery plus-negative plate pole volume of the double-coat of composite, this pole volume layer stack structure is simple, make easy, coating physics
Stable in properties, adhesive force are strong.To strengthen active substance lithium ion under high magnification embedding by adding external coating for this utility model
Enter and abjection ability.
This utility model is achieved through the following technical solutions technical goal.
The lithium ion battery plus-negative plate pole volume of double-coat, it includes base material, undercoating and external coating.Described base material is one
Planting metal forming, base material collector two sides uniformly coats one layer of undercoating, and this composite construction constitutes traditional lithium-ion battery pole volume.Its
The improvement is that: on cured undercoating surface, add one layer of external coating of painting.
As further improvement project, the material of external coating, according to depending on electrode plates polarity to be made, makes anode pole piece
External coating material be activated carbon, it is 2～20mg/cm that activated carbon solidifies density below2, make the external coating material of cathode pole piece
For hard carbon, it is 2～16mg/cm that hard carbon solidifies density below2。
As further improvement project, after the external coating solidification of positive pole pole volume, thickness is 50～200 μm, outside the volume of negative pole pole
After curing of coatings, thickness is 40～180 μm.
This utility model compared with prior art, has the positive effect that:
1, charge-discharge magnification is high
Hard carbon has interlaced layer structure, and lithium ion can embed from all angles and abjection.At lithium-ion electric
One layer of hard carbon of pond cathode pole piece surface recombination, hard carbon can embed or deviate from the lithium ion that high power charging-discharging separates out moment.Lithium
One layer of activated carbon of ion battery anode pole piece surface recombination, activated carbon is the material of a kind of loose structure, due to self specific surface
Long-pending big, can be with the substantial amounts of lithium ion of physical absorption.Due to activated carbon and the common effect of hard carbon, Lithium-ion embeding under high magnification
Strengthen with abjection ability, thus realize improving the purpose of high-rate discharge capacity.
2, high rate cyclic is long for service life
Because being combined one layer of activated carbon, hard carbon on the positive and negative plate of lithium ion battery respectively, on the one hand improve quickly acceptance
Lithium ion ability, on the other hand avoids producing Li dendrite, it is most important that directly enhance energy density, so this practicality of adapted
Novel lithium ion battery service life cycle under high magnification is long.
Accompanying drawing explanation
Fig. 1 is this utility model structural profile enlarged diagram.
Detailed description of the invention
Below according to accompanying drawing and in conjunction with the embodiments, the utility model is described in further detail.
The lithium ion battery plus-negative plate pole volume of double-coat shown in Fig. 1, is for making lithium ion battery positive and negative electrode pole piece
Raw material, this material is a kind of multilayer build-up sheet material including base material 1, undercoating 2 and external coating 3.Described base material 1 is a kind of
Metal forming, depending on concrete material is according to the polarity of electrodes of lithium-ion batteries to be produced, anode pole piece selects aluminium foil, cathode pole piece
Select Copper Foil.First uniformly coating one layer of undercoating 2 on base material 1 collector two sides, undercoating 2 is industry conventional constituents, it
Formed with the mediation of conductive agent, binding agent and solvent by ternary material, after undercoating 2 solidifies, constitute the lithium-ion electric of conventional structure
Both positive and negative polarity pole, pond is rolled up.This utility model in order to improve electrode plates Lithium-ion embeding and abjection ability under high magnification further,
Cured undercoating 2 surface adds one layer of external coating 3 of painting.Depending on the material foundation electrode plates polarity to be made of external coating 3,
External coating 3 material making anode pole piece is activated carbon, and it is 2～20mg/cm that activated carbon solidifies density below2, thickness is end 50
～200 μm；External coating 3 material making cathode pole piece is hard carbon, and it is 2～16mg/cm that hard carbon solidifies density below2, thickness is
40～180 μm.
Embodiment 1
The lithium ion battery plus-negative plate pole volume of the double-coat made according to technique scheme still falls within a kind of blank, should
Blank is after cutting, and design size and polarity according to supporting battery are die-cut into positive and negative plate respectively.The supporting capacity of the present embodiment
For 10Ah lithium ion battery, it is 20mg/cm that the external coating 3 of positive pole pole used volume solidifies density value below2, thickness is 50 μm.
It is 16 mg/cm that the external coating 3 of described negative pole pole volume solidifies density value below2, thickness is 40 μm.In order to verify that this practicality is new
Type technique effect, the existing resultant battery assembled by application this utility model and prior art same specification battery are on same stand
Making performance comparison test, concrete pilot project see table one:
Table one performance comparison test's table
Embodiment 2
The supporting capacity of the present embodiment is 20Ah lithium ion battery, density value after external coating 3 solidification of positive pole pole used volume
For 2.0mg/cm2, thickness is 200 μm.It is 2mg/cm that the external coating 3 of described negative pole pole volume solidifies density value below2, thickness is
180μm.Other key element is identical with embodiment 1, therefore narration is not repeated.The concrete pilot project of the present embodiment see table two:
Table two performance comparison test's table
Knowable to performance comparison test's table of above-mentioned two pieces embodiment, the lithium ion battery that application this utility model is supporting
Can be good more than prior art same specification battery, particularly circulating battery improves more than 10 times service life, and supports that moment surpasses
High-multiplying power discharge index all obtains multiplication.
Claims (3)
1. the lithium ion battery plus-negative plate pole volume of a double-coat, it includes base material (1), undercoating (2) and external coating (3)；
Described base material (1) is a kind of metal forming, and base material (1) collector two sides uniformly coats one layer of undercoating (2), and this composite construction is constituted
Traditional lithium-ion battery pole is rolled up；It is characterized in that: on cured undercoating (2) surface, add one layer of external coating (3) of painting.
The lithium ion battery plus-negative plate pole volume of double-coat the most according to claim 1, it is characterised in that: described external coating
(3) material is according to depending on electrode plates polarity to be made, and external coating (3) material making anode pole piece is activated carbon, activated carbon
Solidifying density below is 2.0～20mg/cm2, external coating (3) material making cathode pole piece is hard carbon, and hard carbon solidification is the closeest
Degree is 2.0～16mg/cm2。
The lithium ion battery plus-negative plate pole volume of double-coat the most according to claim 1, it is characterised in that: positive pole pole volume
After external coating (3) solidification, thickness is 50～200 μm, and after external coating (3) solidification of negative pole pole volume, thickness is 40～180 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620234889.4U CN205508953U (en) | 2016-03-25 | 2016-03-25 | Positive negative pole of lithium ion battery of double -coat is extremely rolled up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620234889.4U CN205508953U (en) | 2016-03-25 | 2016-03-25 | Positive negative pole of lithium ion battery of double -coat is extremely rolled up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205508953U true CN205508953U (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620234889.4U Active CN205508953U (en) | 2016-03-25 | 2016-03-25 | Positive negative pole of lithium ion battery of double -coat is extremely rolled up |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680089A (en) * | 2016-03-25 | 2016-06-15 | 江苏富朗特新能源有限公司 | Positive/negative pole roll with dual coating layers for lithium ion battery |
-
2016
- 2016-03-25 CN CN201620234889.4U patent/CN205508953U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680089A (en) * | 2016-03-25 | 2016-06-15 | 江苏富朗特新能源有限公司 | Positive/negative pole roll with dual coating layers for lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jiangyan District of Jiangsu city in Taizhou province 225526 Liang Xu two Dengke Park No. 1 Co-patentee after: SHUANGDENG GROUP Co.,Ltd. Patentee after: JIANGSU SHUANGDENG FRONT NEW ENERGY CO.,LTD. Address before: Jiangyan District of Jiangsu city in Taizhou province 225526 Liang Xu two Dengke Park No. 1 Co-patentee before: SHUANGDENG GROUP Co.,Ltd. Patentee before: JIANGSU FRONT NEW ENERGY Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Double coated positive and negative coils for lithium ion batteries Effective date of registration: 20210429 Granted publication date: 20160824 Pledgee: Jiangyan Jiangsu rural commercial bank Limited by Share Ltd. Pledgor: JIANGSU SHUANGDENG FRONT NEW ENERGY Co.,Ltd. Registration number: Y2021980003213 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230511 Granted publication date: 20160824 Pledgee: Jiangyan Jiangsu rural commercial bank Limited by Share Ltd. Pledgor: JIANGSU SHUANGDENG FRONT NEW ENERGY CO.,LTD. Registration number: Y2021980003213 |