CN109755452A - A kind of coiling type lithium ionic cell pole assembly - Google Patents
A kind of coiling type lithium ionic cell pole assembly Download PDFInfo
- Publication number
- CN109755452A CN109755452A CN201711075999.6A CN201711075999A CN109755452A CN 109755452 A CN109755452 A CN 109755452A CN 201711075999 A CN201711075999 A CN 201711075999A CN 109755452 A CN109755452 A CN 109755452A
- Authority
- CN
- China
- Prior art keywords
- insulative glue
- epoxy
- ionic cell
- type lithium
- glue
- 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.)
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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
-
- 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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- Primary Cells (AREA)
Abstract
The present invention provides in a kind of assembling process of coiling type lithium ionic cell pole, cover the insulative glue and its application method of exposed tab metal, the insulative glue, it contains ingredient and the mass percent of each ingredient is as follows: epoxy resin 20% ~ 60%, epoxy curing agent 12% ~ 15%, epoxy propane butyl ether 5% ~ 15%, triethanolamine 3% ~ 10%, silica flour 15% ~ 30%, white carbon black 5% ~ 10%.The insulative glue is a kind of artificial rubber coating agent of natural drying, it can be sprayed, brushed or be impregnated easily, the insulative glue is suitable for the Ring-fencing at lithium battery exposed metal position, the performance of lithium ion battery itself is absolutely not influenced, it is low in cost, simple to operation, insulation effect is excellent, securely and reliably.
Description
Technical field
The present invention relates to the insulation technology fields of lithium ion battery, and in particular, to prepares in lithium ion battery, electrode
The insulation technology of local tab exposed metal is further related to coiling type lithium ionic cell pole assembling process after winding
In, cover the insulative glue and its application method of exposed tab metal.
Background technique
For lithium ion battery after pole piece assembly, negative electrode tab dressing area must all exceed positive plate in length and width direction
Dressing area, with guarantee battery capacity play and security performance, therefore, the width of the width direction of pole piece, positive plate must
So it is less than the width of negative electrode tab, after pole piece welding metal tab, anode ear has part metals beyond anode pole piece width,
But within the coverage area of cathode pole piece, necessarily occurs the part anode beyond anode pole piece in winding assembling process
Ear metal and negative electrode tab EDGE CONTACT.To avoid positive/negative plate head tab welding position from contacting after mounting, it is short to cause battery
The serious security problems such as road fever, burning, industry is generally coated the position using a kind of green glue, but this kind of green glue
Expensive, complex procedures, inefficiency can not be completely by exposed metal position in the operating process of green glue cladding
It is completely covered, which still has security risk caused by biggish failure.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of coiling type lithium ionic cell pole assembling process
In, cover the insulative glue and its application method of exposed tab metal.In pole rolls of lithium ion batteries before assembly, use
Insulative glue is coated on the metal position that there is short-circuit hidden danger, using the mobility and good fillibility of liquid, well will
The irregular complete fully dense covering in exposed metal position, easy to operate, insulation effect is splendid.
Technical scheme is as follows: in a kind of assembling process of coiling type lithium ionic cell pole, covering exposed pole
The insulative glue of ear metal, the mass percent containing ingredient and each ingredient are as follows:
Epoxy resin 20% ~ 60%,
Epoxy curing agent 12% ~ 15%,
Epoxy propane butyl ether 5% ~ 15%,
Triethanolamine 3% ~ 10%,
Silica flour 15% ~ 30%,
White carbon black 5% ~ 10%.
The epoxy resin selects 618 epoxy resin.
The epoxy curing agent is selected from aliphatic diamine and polyamines, aromatic polyamine, other nitrogenous compounds and changes
Property fatty amine.
The epoxy curing agent is selected from organic acid, acid anhydrides and boron trifluoride and its complex compound
The epoxy curing agent selects 651 polyamide curing agents.
The material property of the insulative glue is as follows:
24% Xiao A hardness: (ASTM D-2240) 70
Pulling force: (ASTM D-638) 3740psi (1psi=0.070kg/cm2)
Salt spray test: (ASTM B-117) 1000 hours qualifications
Extension rate: (ASTM D-638) 430%
Against weather: (ASTM G-53) 3-5 years, Plasti Dip 7-10 years, Plasti Dip/U.V. Stable
Anti-shear performance: (ASTM D-1044) is very good
Wear-resisting property: (ASTM D-3170) is fabulous
Use temperature range: -34 DEG C -93 DEG C
Shelf life: 1 year (25 DEG C)
Range of viscosities: 25 DEG C of 80-100K.U.@(K.U., that is, krebs units, consistency measurement unit)
Permeability: (ASTM E-96) 0.03grains/sq.ft/hr. (0.0021mg/cm2/hr)
Average dose: 0.736m2/liter pressure resistance: (ASTM D-149) 1400V/mil (1mil=0.0254mm)
Chemical-resistance: acid, alkali, pollution-are good；It should adjust and be mixed uniformly before use, keep enough ventilations
The insulative glue is the liquid with good fluidity, cementability and insulating properties, and correlation is had good insulating performance
Substance, certain mobility is made it have by way of preparing solution, conducive to the filling at irregular position, is provided simultaneously with
Certain adhesive property can be very good to be bonded in irregular metal exsertion part, while the glue makes in lithium ion battery
With the electrochemical reaction for being not involved in inside battery in the process, the performance that will not influence lithium ion battery itself is played.
In the assembling process of coiling type lithium ionic cell pole, exposed tab metal is covered with the insulative glue
Method, comprising the following specific steps
1) it configures coating agent: the insulative glue tune being mixed to required with the diluent for being no more than insulative glue quality 25% and is contained admittedly
Amount 10% ~ 50%, up to the coating agent；
It 2-1) sprays: before spraying, coating agent obtained by step 1) being adjusted slightly and is mixed, is then sequentially coated at spray gun in fish scale-shaped
Exposed tab metal surface, spray gun should spray 10-15cm of diameter, dry 10- away from exposed 15-30cm of tab metal surface
20 minutes, coating layer thickness was 0.05-0.13mm at this time；If coating is not up to required thickness, spray increases to institute for coating again
Need thickness；
Or 2-2) dipping: it is mixed before use, coating agent obtained by step 1) is adjusted slightly, prevents bubble；With every 5 seconds 2.5cm
Exposed tab metal is immersed step 1) products therefrom by the speed of left and right, then with the taking-up of identical speed, dry 30-40
Minute, coating layer thickness is 0.15-0.20mm at this time；If coating is not up to required thickness, needed for repeated impregnations increase to coating
Thickness；
Or 2-3) hairbrush coating: it mixes before use, coating agent obtained by step 1) is adjusted slightly, is successively applied with banister brush in fish scale-shaped
It covers, 10-20 minutes dry, coating layer thickness is 0.10-0.13mm at this time；If coating is not up to required thickness, will be applied with brush again
Layer increases to required thickness.
The diluent is Plasti Dip special diluting agent.
The required thickness is 0.3-0.38mm.
The invention has the benefit that insulative glue of the present invention is a kind of artificial rubber coating agent of natural drying,
It can be sprayed, brushed or be impregnated easily, there is moisture-proof, acid-proof, the characteristics such as rub resistance, corrosion-resistant can be in various weather items
It is used under part, there is good sealing, insulation performance to position is smeared.The insulative glue is suitable for lithium battery exposed metal portion
The Ring-fencing of position, absolutely not influences the performance of lithium ion battery itself, low in cost, simple to operation, insulation effect
It is excellent, securely and reliably.
It is of the present invention in the assembling process of coiling type lithium ionic cell pole, covered with the insulative glue exposed
The method of tab metal, after positive and negative tab and pole piece welding, the exposed metal position beyond pole piece width direction smears one
Layer insulative glue can completely avoid the positive/negative pole piece that can not be avoided completely because of winding assembly and the exposed portion of positive negative tab
Short circuit caused by tap touching, to improve on the basis of not having to stick on and insulating green glue because battery caused by changing position short circuit is sent out
The serious safeties accident such as heat, spontaneous combustion, to greatly improve the security performance of battery.
Specific embodiment
Embodiment 1:
In a kind of assembling process of coiling type lithium ionic cell pole, the insulative glue of exposed tab metal is covered, is contained into
Divide and the mass percent of each ingredient be as follows:
Epoxy resin 20%,
Epoxy curing agent 15%,
Epoxy propane butyl ether 15%,
Triethanolamine 10%,
Silica flour 30%,
White carbon black 10.
The epoxy resin selects 618 epoxy resin.The epoxy curing agent is selected from organic acid.
Claims (3)
1. a kind of assembly of coiling type lithium ionic cell pole, covers the insulative glue of exposed tab metal, containing ingredient and
The mass percent of each ingredient is as follows:
Epoxy resin 60%,
Epoxy curing agent 12%,
Epoxy propane butyl ether 5%,
Triethanolamine 3%,
Silica flour 15%,
White carbon black 5%.
2. the epoxy resin selects 618 epoxy resin.
3. the epoxy curing agent is selected from aliphatic diamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711075999.6A CN109755452A (en) | 2017-11-06 | 2017-11-06 | A kind of coiling type lithium ionic cell pole assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711075999.6A CN109755452A (en) | 2017-11-06 | 2017-11-06 | A kind of coiling type lithium ionic cell pole assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109755452A true CN109755452A (en) | 2019-05-14 |
Family
ID=66399807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711075999.6A Pending CN109755452A (en) | 2017-11-06 | 2017-11-06 | A kind of coiling type lithium ionic cell pole assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109755452A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448043A (en) * | 2019-08-30 | 2021-03-05 | 中科邦汇新材料科技(东莞)有限公司 | Novel lithium battery cathode and anode sheet insulating glue process |
| CN113067041A (en) * | 2021-03-22 | 2021-07-02 | 宁德新能源科技有限公司 | Battery cell and electronic device |
-
2017
- 2017-11-06 CN CN201711075999.6A patent/CN109755452A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448043A (en) * | 2019-08-30 | 2021-03-05 | 中科邦汇新材料科技(东莞)有限公司 | Novel lithium battery cathode and anode sheet insulating glue process |
| CN113067041A (en) * | 2021-03-22 | 2021-07-02 | 宁德新能源科技有限公司 | Battery cell and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190514 |
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| WD01 | Invention patent application deemed withdrawn after publication |