CN105591042A - High-strength and corrosion-resisting lithium battery shell and production method thereof - Google Patents
High-strength and corrosion-resisting lithium battery shell and production method thereof Download PDFInfo
- Publication number
- CN105591042A CN105591042A CN201610118143.1A CN201610118143A CN105591042A CN 105591042 A CN105591042 A CN 105591042A CN 201610118143 A CN201610118143 A CN 201610118143A CN 105591042 A CN105591042 A CN 105591042A
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- CN
- China
- Prior art keywords
- parylene
- layer
- lithium battery
- parylene layer
- battery shell
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title abstract description 14
- 229910052744 lithium Inorganic materials 0.000 title abstract description 14
- 229920000052 poly(p-xylylene) Polymers 0.000 claims abstract description 51
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims description 12
- 238000003475 lamination Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000010422 painting Methods 0.000 claims description 9
- 238000007747 plating Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 3
- 238000005137 deposition process Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052753 mercury Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 230000004888 barrier function Effects 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 238000006748 scratching Methods 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005562 fading Methods 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a high-strength and corrosion-resisting lithium battery shell. The high-strength and corrosion-resisting lithium battery shell is characterized by comprising an aluminum layer, parylene layers and a hard anti-scratching layer, wherein the aluminum layer is made into a main body part of a battery shell; after the outer side of the aluminum layer is plated with the parylene layer, the hard anti-scratching layer is coated; and the parylene layer is plated on the inner side of the aluminum layer. The high-strength and corrosion-resisting lithium battery has the beneficial effects that the corrosion resistance of the lithium battery shell is enhanced so that the barrier property of the lithium battery shell is improved, the service life of a lithium battery is remarkably improved, and the probability of abnormal accidents including swelling, capacity fading and the like in a utilization process of the lithium battery is reduced; and the breaking area of the battery shell after the battery is extruded is reduced, the contact area of a battery cell and external oxygen is reduced, and the utilization safety of the lithium battery is improved.
Description
Technical field
The present invention relates to a kind of battery case, it is specifically related to a kind of li battery shell and production thereof of high-strength corrosion-resistingMethod.
Background technology
Lithium battery is high with its specific energy, security good, have extended cycle life, advantages of environment protection is widely used in electricityThe fields such as son, communication, electric tool, electric vehicle, energy storage, Aero-Space. Lithium ion battery comprises outside battery case and batteryPositive pole, collector, barrier film, electrolyte and negative pole in shell, battery case, mainly for the protection of inside battery battery core, prevents the external worldOxygen and moisture etc. contact with materials such as electrolyte with inside battery electrode.
Existing most of li battery shell adopts metal shell, the aluminum plastic film flexible package shells such as box hat, aluminum hull or mouldsMaterial shell, but metal shell weight is large, corrosion resistance and electrical insulating property bad; Although plastic casing is lightweight, corrosion resistance andElectrical insulating property is good, but the material adopting due to battery case is modified polymer material, and this macromolecular material is subject to macromoleculeThe mobility of segment and the impact of the free volume of molecule segment, its barrier to outside moisture and oxygen is bad, thereby makes electricityChi Yi produces bulging and electrode corrosion; Although aluminum plastic film flexible package shell good barrier property is still unsuitable for high-capacity dynamical lithium electricityPond.
Summary of the invention
The object of the invention is to propose a kind of li battery shell and production method thereof of high-strength corrosion-resisting, the battery providingShell has superior antiseptic property, and it has good impact resistance and reliable insulating properties.
In order to address the above problem, the li battery shell that the invention provides high-strength corrosion-resisting has adopted following technical sideCase:
A li battery shell for high-strength corrosion-resisting, is characterized in that: comprise aluminium lamination, parylene layer, hard anti-scratch layers, described inAluminium lamination be made as the main part of battery case, the outside of described aluminium lamination is first plated parylene layer and is then applied hard anti-scratchLayer, the inner side plating parylene layer of described aluminium lamination, described parylene layer comprises C type parylene layer and N-typeParylene layer, and both composite beds, described parylene layer comprises Parylene and a chloro Parylene,The thickness of described C type parylene layer is 20-50 μ m, and the thickness of described N-type parylene layer is 20-50 μ m, described CThe gross thickness of type parylene layer and N-type parylene layer is 65 μ m.
The production method of the li battery shell of above-mentioned a kind of high-strength corrosion-resisting is as follows:
The first step: surface preparation: first sandblasting pretreatment is carried out in each surface of workpiece, the surface of workpiece is thrownLight, deburring, avoid later stage plated film to occur inhomogeneous phenomenon, after acceptance(check), is for further processing;
Second step: clean activation: carry out processed after pretreated previous step workpiece is sprayed to cleaning, then enterRow is dried, and then uses Cement Composite Treated by Plasma to carry out activation processing the surface of the work after drying; After acceptance(check), carry out nextStep is processed;
The 3rd step: plated film: adopting vapour deposition process is workpiece plating Parylene film, and Parylene raw material is 130 DEG C～140DEG C, be less than under 100Pa condition and evaporate; Be 10 in vacuum-2-102In the vacuum chamber of Pa, deposit sedimentation rate 0.1-2 μM/h; Residual gas reclaims by cold trap trapping;
The 4th step: using sprays paint gets rid of painting method and apply hard anti-scratch layers: use UV ultra-violet curing glue to apply at Parylene film outer surface5-10μmSiO2Layer, described use is sprayed paint and is got rid of the processing step that painting method applies hard anti-scratch layers and be: first aluminum hull is cleaned, keepBonding plane is clean, dry, without grease; Then by spraying, dipping, brush, get rid of the modes such as painting ultraviolet cured adhesive is coated inAluminum hull surface, irradiates 60-120 second by glue-coated surface through UV irradiation, and guaranteeing to be glued position can be shone by ultraviolet rayArrive, the distance of uviol lamp and photographed object approaches high power mercury lamp more than 4.1kw as much as possible, will keep being no less than 45cm'sSafe distance;
The 5th step: UV laser goes the coating of weld: use UV laser by the Parylene of welding junction place coating removal, then instituteThe product obtaining gets final product directly and other accessory carries out welding assembly.
Beneficial effect of the present invention is: provide a kind of high-strength corrosion-resisting li battery shell its have superior anti-Electrolyte corrosive nature, and there is good impact resistance and reliable insulating properties. Because of the shell wall surfaces externally and internally of its aluminium shell equalBe coated with C layer and the N layer of parylene, and applied hard anti-scratch layers at parylene layer skin, so do not have exposed metal/bare metal to existOn the surface of li battery shell shell wall, strengthen insulating reliability and the corrosion resistance of li battery shell, and further improvedThe barrier of li battery shell, has significantly improved service life of lithium battery, has reduced bulging, appearance in lithium battery use procedureAmount decay waits abnormal accident probability; Simultaneously due to the stopping of hard anti-scratch layers, reduce battery electricity after extruding and surperficial scratching has occurredThe Strain energy of pond shell, has ensured dependability, reduces the contact area of battery core and external oxygen, thereby has reduced great RongThere is the probability of burning, the security that improves lithium battery in amount battery.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the li battery shell of high-strength corrosion-resisting provided by the invention.
Detailed description of the invention
The technical scheme providing for a more clear understanding of the present invention, does into one below in conjunction with accompanying drawing and specific embodimentThe explanation of step.
As shown in Figure 1, the preferred embodiment of the li battery shell of high-strength corrosion-resisting provided by the invention, its feature existsIn: comprise aluminium lamination 1, parylene layer 2, hard anti-scratch layers 3, described aluminium lamination 1 is made as the main part of battery case, describedThe hard anti-scratch layers 3 of outside plating parylene layer 2 rear coating of aluminium lamination 1, the inner side plating parylene layer 2 of described aluminium lamination 1, describedParylene layer 2 comprises C type parylene layer 21 and N-type parylene layer 22, and both composite beds 23, describedParylene layer 2 comprises Parylene and a chloro Parylene, and the thickness of described C type parylene layer 21 is 20-50 μ m, the thickness of described N-type parylene layer 22 is 20-50 μ m, described C type parylene layer 21 and N-type paryleneThe gross thickness of layer 22 is 65 μ m.
Embodiment 1:
The production method of the li battery shell of a kind of high-strength corrosion-resisting provided by the invention, its job step is as follows:
The first step: surface preparation: first sandblasting pretreatment is carried out in each surface of workpiece, the surface of workpiece is thrownLight, deburring, avoid later stage plated film to occur inhomogeneous phenomenon, after acceptance(check), is for further processing;
Second step: clean activation: carry out processed after pretreated previous step workpiece is sprayed to cleaning, then enterRow is dried, and then uses Cement Composite Treated by Plasma to carry out activation processing the surface of the work after drying; After acceptance(check), carry out nextStep is processed;
The 3rd step: plated film: adopting vapour deposition process is workpiece plating Parylene film, and Parylene raw material is 130 DEG C～140DEG C, be less than under 100Pa condition and evaporate; Be 10 in vacuum-2-102In the vacuum chamber of Pa, deposit sedimentation rate 0.1-2 μM/h; Residual gas reclaims by cold trap trapping;
The 4th step: using sprays paint gets rid of painting method and apply hard anti-scratch layers: apply 0.5 ~ 50 μ mUV ultraviolet at Parylene film outer surface solidChange glue;
The 5th step: UV laser goes the coating of weld: use UV laser by the Parylene of welding junction place coating removal, then instituteThe product obtaining gets final product directly and other accessory carries out welding assembly.
Described use is sprayed paint, and to get rid of the processing step that painting method applies hard anti-scratch layers as follows:
By bonding plane must be clean, dry, without grease;
2. by spraying, dipping, brush, get rid of the modes such as painting ultraviolet cured adhesive (OS-7035) is coated in to aluminum hull surface;
3. 60-120 second is irradiated to through UV irradiation in glue-coated surface, should guarantee to be glued position can be shone by ultraviolet ray,The distance of uviol lamp and photographed object is approaching as much as possible
High power mercury lamp more than 4.1kw, will keep being no less than the safe distance of 45cm;
To insulation, corrosion-resistant, the high-temp resisting high-humidity resisting corrosivity of being correlated with through aforementioned production method processing battery caseCan test, method of testing and result are as follows:
Insulation: will connect voltage resistant instrument negative pole after local shell coating removal, voltage resistant instrument anodal contact battery case and inside coating tableFace, voltage 1000V/3000V or other require voltage, leakage current 0.005A, 5 seconds testing times, test passes;
Corrosion-resistant: the battery case entirety after applying to be immersed in electrolyte, under normal temperature air condition (25 degree, 60RH% humidity)Under condition, through 38 days, non-corroding produced, and without obscission, after cleaning, drying, insulating properties do not decline;
High-temp resisting high-humidity resisting corrosion: the battery case entirety after applying is immersed in electrolyte to (60 degree, 90-under hot and humid condition95RH% humidity) under condition, through 28 days, non-corroding produced, and without obscission, after cleaning, drying, insulating properties do not decline.
Claims (2)
1. a li battery shell for high-strength corrosion-resisting, is characterized in that: comprise aluminium lamination, parylene layer, hard anti-scratch layers, instituteThe aluminium lamination of stating is made as the main part of battery case, after the outside plating parylene layer of described aluminium lamination, applies hard anti-scratch layers,The inner side plating parylene layer of described aluminium lamination, described parylene layer comprises C type parylene layer and N-type paryleneLayer, and both composite beds, described parylene layer comprises Parylene and a chloro Parylene, described CThe thickness of type parylene layer is 20-50 μ m, and the thickness of described N-type parylene layer is 20-50 μ m, described C typeThe gross thickness of parylene layer and N-type parylene layer is 65 μ m.
2. a production method for the li battery shell of high-strength corrosion-resisting claimed in claim 1, is characterized in that:
The first step: surface preparation: first sandblasting pretreatment is carried out in each surface of workpiece, the surface of workpiece is thrownLight, deburring, avoid later stage plated film to occur inhomogeneous phenomenon, after acceptance(check), is for further processing;
Second step: clean activation: carry out processed after pretreated previous step workpiece is sprayed to cleaning, then enterRow is dried, and then uses Cement Composite Treated by Plasma to carry out activation processing the surface of the work after drying; After acceptance(check), carry out nextStep is processed;
The 3rd step: plated film: adopting vapour deposition process is workpiece plating Parylene film, and Parylene raw material is 130 DEG C～140DEG C, be less than under 100Pa condition and evaporate; Be 10 in vacuum-2-102In the vacuum chamber of Pa, deposit sedimentation rate 0.1-2 μM/h; Residual gas reclaims by cold trap trapping;
The 4th step: using sprays paint gets rid of painting method and apply hard anti-scratch layers: use UV ultra-violet curing glue to apply at Parylene film outer surface5-10μmSiO2Layer, described use is sprayed paint and is got rid of the processing step that painting method applies hard anti-scratch layers and be: first aluminum hull is cleaned, keepBonding plane is clean, dry, without grease; Then by spraying, dipping, brush, get rid of the modes such as painting ultraviolet cured adhesive is coated inAluminum hull surface, irradiates 60-120 second by glue-coated surface through UV irradiation, and guaranteeing to be glued position can be shone by ultraviolet rayArrive, the distance of uviol lamp and photographed object approaches high power mercury lamp more than 4.1kw as much as possible, will keep being no less than 45cm'sSafe distance;
The 5th step: UV laser goes the coating of weld: use UV laser by the Parylene of welding junction place coating removal, then instituteThe product obtaining gets final product directly and other accessory carries out welding assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610118143.1A CN105591042A (en) | 2016-03-02 | 2016-03-02 | High-strength and corrosion-resisting lithium battery shell and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610118143.1A CN105591042A (en) | 2016-03-02 | 2016-03-02 | High-strength and corrosion-resisting lithium battery shell and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105591042A true CN105591042A (en) | 2016-05-18 |
Family
ID=55930459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610118143.1A Withdrawn CN105591042A (en) | 2016-03-02 | 2016-03-02 | High-strength and corrosion-resisting lithium battery shell and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105591042A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904354A (en) * | 2019-02-28 | 2019-06-18 | 珠海格力电器股份有限公司 | Battery case for solving problem of internal short circuit of battery by using insulating liquid and battery |
| CN112382812A (en) * | 2020-10-13 | 2021-02-19 | 广东微电新能源有限公司 | Battery film coating method and battery |
-
2016
- 2016-03-02 CN CN201610118143.1A patent/CN105591042A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904354A (en) * | 2019-02-28 | 2019-06-18 | 珠海格力电器股份有限公司 | Battery case for solving problem of internal short circuit of battery by using insulating liquid and battery |
| CN109904354B (en) * | 2019-02-28 | 2024-03-22 | 珠海格力电器股份有限公司 | Battery case and battery for solving internal short circuit problem of battery by using insulating liquid |
| CN112382812A (en) * | 2020-10-13 | 2021-02-19 | 广东微电新能源有限公司 | Battery film coating method and battery |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160518 |