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CN105552254A - Corrosion-prevention and compression-resistant lithium battery shell and production method therefor - Google Patents

Corrosion-prevention and compression-resistant lithium battery shell and production method therefor Download PDF

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Publication number
CN105552254A
CN105552254A CN201610118290.9A CN201610118290A CN105552254A CN 105552254 A CN105552254 A CN 105552254A CN 201610118290 A CN201610118290 A CN 201610118290A CN 105552254 A CN105552254 A CN 105552254A
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CN
China
Prior art keywords
parylene
layer
parylene layer
lithium battery
battery shell
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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Withdrawn
Application number
CN201610118290.9A
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Chinese (zh)
Inventor
郭菲
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Individual
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Individual
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Publication date
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Priority to CN201610118290.9A priority Critical patent/CN105552254A/en
Publication of CN105552254A publication Critical patent/CN105552254A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/116Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/116Primary casings; Jackets or wrappings characterised by the material
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • 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)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The invention provides a corrosion-prevention and compression-resistant lithium battery shell. The lithium battery shell is characterized by comprising an aluminum layer, a parylene layer and a hard anti-scratch layer, wherein the aluminum layer is manufactured into the main body part of the battery shell; the parylene layer is plated on the outer side of the aluminum layer, and then the aluminum layer is coated with the hard anti-scratch layer; and the parylene layer is plated on the inner side of the aluminum layer. The corrosion-prevention and compression-resistant lithium battery shell has the beneficial effects that the service life of the lithium battery is greatly prolonged, the probability of bulging, capacity fading and other abnormal accidents in the use process of the lithium battery is lowered, the cracked area of the battery shell after the battery is extruded is decreased, the contact area between a cell and external oxygen is decreased, and the safety of the lithium battery in use is improved.

Description

A kind of anticorrosion withstand voltage li battery shell and production method thereof
Technical field
The present invention relates to a kind of battery case, it is specifically related to a kind of anticorrosion withstand voltage li battery shell and production method thereof.
Background technology
Lithium battery is high with its specific energy, fail safe good, have extended cycle life, the field such as advantages of environment protection is widely used in electronics, communication, electric tool, motor vehicle, energy storage, Aero-Space.Lithium ion battery comprises positive pole, collector, barrier film, electrolyte and negative pole in battery case and battery case, and battery case, mainly for the protection of inside battery battery core, prevents extraneous oxygen and moisture etc. and the material such as inside battery electrode and electrolyte.Existing most of li battery shell adopts the metal shell such as box hat, aluminum hull, aluminum plastic film flexible package shell or plastic casing, but metal shell weight is large, corrosion resistance and electrical insulating property bad; Although plastic casing is lightweight, corrosion resistance and electrical insulating property good, but the material adopted due to battery case is modified polymer material, this macromolecular material affects by the mobility of polymer segment and the free volume of molecule segment, it is bad to the barrier of outside moisture and oxygen, thus makes battery easily produce bulging and electrode corrosion; Although aluminum plastic film flexible package shell good barrier property is still unsuitable for large-capacity power lithium battery.
Summary of the invention
The object of the invention is to propose a kind of anticorrosion withstand voltage li battery shell and production method thereof, the battery case provided has superior antiseptic property, and it has good impact resistance and reliable insulating properties.
In order to solve the problem, the invention provides anticorrosion withstand voltage li battery shell and have employed following technical scheme:
A kind of anticorrosion withstand voltage li battery shell, it is characterized in that: comprise aluminium lamination, parylene layer, hard anti-scratch layers, described aluminium lamination is 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-scratch layers, the inner side plating parylene layer of described aluminium lamination, described parylene layer comprises C type parylene layer and N-type parylene layer, and both composite beds, described parylene layer comprises Parylene and a chloro Parylene, the thickness of described C type parylene layer is 20-40 μm, the thickness of described N-type parylene layer is 20-40 μm, described C type parylene layer and the gross thickness of N-type parylene layer are 55 μm.
The production method of above-mentioned a kind of anticorrosion withstand voltage li battery shell is as follows:
The first step: surface preparation: first carry out sandblasting pretreatment to each surface of workpiece, carries out polishing, deburring to the surface of workpiece, avoids later stage plated film to occur uneven phenomenon, after acceptance(check), is for further processing;
Second step: cleaning, activation: carry out processed after being cleaned by pretreated for previous step workpiece, then dry, cleans up the greasy dirt of surface of the work and other impurity; Then coupling agent is used to carry out activation processing as activator the surface of the work after oven dry; After acceptance(check), be for further processing;
3rd step: mask: the process or apply appropriate glue process of being taped in pending for the workpiece after previous step process face, leaves standstill after 0.5-1 hour, checked whether and leakage to have covered and mistake covers phenomenon, be put in defective products box pending after defective products arrow labeling shows;
4th step: plated film: adopt vapour deposition process to be workpiece plating Parylene film, Parylene raw material, at 130 DEG C ~ 140 DEG C, evaporates under being less than 100Pa condition; Be 10 in vacuum degree -2-10 2deposit in the vacuum chamber of Pa, deposition rate 0.1-2 μm/h; Residual gas is reclaimed by cold-trap;
5th step: use sol-gal process to apply hard anti-scratch layers: use sol-gal process at Parylene film outer surface coating 5-10 μm of SiO 2layer, described sol-gal process applies hard anti-scratch layers technique and is: first, by alcohol dilutions such as inorganic agent use water, isopropyl alcohol, butyl glycols; Then, by dilution after inorganic agent and bonding agent, auxiliary agent tego-wet280 and acrylic resin composite; Then, by spraying, dipping, the modes such as brushing are coated in aluminum hull surface; Last drying at room temperature is after at least 20 minutes, and under 150 ~ 220 degree of conditions, baking forms complete cross-linked state, keeps thickness between 0.5 ~ 50 μm;
6th step: remove mask: torn off by mask in the 3rd step, the product of gained gets final product directly and other accessory carries out welding assembly.
Beneficial effect of the present invention is: it has superior anti-electrolytic corrosion performance to provide a kind of anticorrosion withstand voltage li battery shell, and has good impact resistance and reliable insulating properties.Shell wall surfaces externally and internally because of its aluminium shell is all coated with C layer and the N layer of parylene, and be coated with hard anti-scratch layers at parylene layer skin, like this then there is no exposed metal/bare metal on the surface of li battery shell shell wall, enhance insulating reliability and the corrosion resistance of li battery shell, and further increase the barrier of li battery shell, significantly improve the useful life of lithium battery, reduce the abnormal accident probability such as the bulging in lithium battery use procedure, capacity attenuation; Simultaneously due to the stop of hard anti-scratch layers, reduce battery and the Strain energy of battery case after extruding and surperficial scratching occurs, ensure that dependability, reduce the contact area of battery core and external oxygen, thus reduce the probability that burning occurs high capacity cell, improve the fail safe of lithium battery.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of anticorrosion withstand voltage li battery shell provided by the invention.
Embodiment
The technical scheme provided for a more clear understanding of the present invention, is described further below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, the preferred embodiment of anticorrosion withstand voltage li battery shell provided by the invention, it is characterized in that: 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, the hard anti-scratch layers 3 of coating after the outside plating parylene layer 2 of described aluminium lamination 1, the inner side plating parylene layer 2 of described aluminium lamination 1, described parylene layer 2 comprises C type parylene layer 21 and N-type parylene layer 22, and both composite beds 23, described parylene layer 2 comprises Parylene and a chloro Parylene, the thickness of described C type parylene layer 21 is 20-40 μm, the thickness of described N-type parylene layer 22 is 20-40 μm, described C type parylene layer 21 and the gross thickness of N-type parylene layer 22 are 55 μm.
Embodiment 1:
The production method of above-mentioned a kind of anticorrosion withstand voltage li battery shell is as follows:
The first step: surface preparation: first sandblasting pretreatment is carried out to each surface of the main part of the battery case that aluminium lamination 1 makes, polishing, deburring are carried out to the surface of workpiece, avoid later stage plated film to occur uneven phenomenon, after acceptance(check), be for further processing;
Second step: cleaning, activation: carry out processed after being cleaned by pretreated for previous step workpiece, then dry, cleans up the greasy dirt of surface of the work and other impurity; Then coupling agent is used to carry out activation processing as activator the surface of the work after oven dry; After acceptance(check), be for further processing;
3rd step: mask: the process or apply appropriate glue process of being taped in pending for the workpiece after previous step process face, leaves standstill after 0.5-1 hour, checked whether and leakage to have covered and mistake covers phenomenon, be put in defective products box pending after defective products arrow labeling shows;
4th step: plated film: adopt vapour deposition process to be workpiece plating Parylene film, Parylene raw material, at 130 DEG C ~ 140 DEG C, evaporates under being less than 100Pa condition; Be 10 in vacuum degree -2-10 2deposit in the vacuum chamber of Pa, deposition rate 0.1-2 μm/h; Residual gas is reclaimed by cold-trap;
5th step: use sol-gal process to apply hard anti-scratch layers: use sol-gal process at Parylene film outer surface coating 5-10 μm of SiO 2layer;
6th step: remove mask: torn off by mask in the 3rd step, the product of gained gets final product directly and other accessory carries out welding assembly.
It is as follows that described sol-gal process applies hard anti-scratch layers technique:
1. by alcohol dilutions such as inorganic agent use water, isopropyl alcohol, butyl glycols;
2. again by dilution after inorganic agent and bonding agent, auxiliary agent (as tego-wet280) and resin (as acrylic resin) composite;
3., by spraying, dipping, the modes such as brushing are coated in aluminum hull surface;
4. first drying at room temperature at least 20 minutes, then under 150 ~ 220 degree of conditions, baking forms complete cross-linked state, and final film thickness is between 0.5 ~ 50um.
To the insulation of being correlated with through aforementioned production method processing battery case, the test of corrosion-resistant, high-temp resisting high-humidity resisting corrosive nature, method of testing and result as follows:
Insulation: by shell local coatings remove after connect voltage resistant instrument negative pole, voltage resistant instrument positive contact battery case and inside coating surface, voltage 1000V/3000V or other require voltage, leakage current 0.005A, 5 seconds testing times, test passes;
Corrosion-resistant: the battery case entirety after coating soaked in the electrolytic solution, under normal temperature air condition under (25 degree, 60RH% humidity) condition, through 38 days, non-corroding produces, and without obscission, after cleaning, drying, insulation property do not decline;
High-temp resisting high-humidity resisting corrodes: the battery case entirety after coating soaked in the electrolytic solution, under hot and humid condition under (60 degree, 90-95RH% humidity) condition, through 28 days, non-corroding produces, and without obscission, after cleaning, drying, insulation property do not decline.

Claims (2)

1. an anticorrosion withstand voltage li battery shell, it is characterized in that: comprise aluminium lamination, parylene layer, hard anti-scratch layers, described aluminium lamination is made as the main part of battery case, hard anti-scratch layers is applied after the outside plating parylene layer of described aluminium lamination, the inner side plating parylene layer of described aluminium lamination, described parylene layer comprises C type parylene layer and N-type parylene layer, and both composite beds, described parylene layer comprises Parylene and a chloro Parylene, the thickness of described C type parylene layer is 20-40 μm, the thickness of described N-type parylene layer is 20-40 μm, described C type parylene layer and the gross thickness of N-type parylene layer are 55 μm.
2. a production method for anticorrosion withstand voltage li battery shell according to claim 1, is characterized in that:
The first step: surface preparation: first carry out sandblasting pretreatment to each surface of workpiece, carries out polishing, deburring to the surface of workpiece, avoids later stage plated film to occur uneven phenomenon, after acceptance(check), is for further processing;
Second step: cleaning, activation: carry out processed after being cleaned by pretreated for previous step workpiece, then dry, cleans up the greasy dirt of surface of the work and other impurity; Then coupling agent is used to carry out activation processing as activator the surface of the work after oven dry; After acceptance(check), be for further processing;
3rd step: mask: the process or apply appropriate glue process of being taped in pending for the workpiece after previous step process face, leaves standstill after 0.5-1 hour, checked whether and leakage to have covered and mistake covers phenomenon, be put in defective products box pending after defective products arrow labeling shows;
4th step: plated film: adopt vapour deposition process to be workpiece plating Parylene film, Parylene raw material, at 130 DEG C ~ 140 DEG C, evaporates under being less than 100Pa condition; Be 10 in vacuum degree -2-10 2deposit in the vacuum chamber of Pa, deposition rate 0.1-2 μm/h; Residual gas is reclaimed by cold-trap;
5th step: use sol-gal process to apply hard anti-scratch layers: use sol-gal process at Parylene film outer surface coating 5-10 μm of SiO 2layer, described sol-gal process applies hard anti-scratch layers technique and is: first, by alcohol dilutions such as inorganic agent use water, isopropyl alcohol, butyl glycols; Then, by dilution after inorganic agent and bonding agent, auxiliary agent tego-wet280 and acrylic resin composite; Then, by spraying, dipping, the modes such as brushing are coated in aluminum hull surface; Last drying at room temperature is after at least 20 minutes, and under 150 ~ 220 degree of conditions, baking forms complete cross-linked state, keeps thickness between 0.5 ~ 50 μm;
6th step: remove mask: torn off by mask in the 3rd step, the product of gained gets final product directly and other accessory carries out welding assembly.
CN201610118290.9A 2016-03-02 2016-03-02 Corrosion-prevention and compression-resistant lithium battery shell and production method therefor Withdrawn CN105552254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610118290.9A CN105552254A (en) 2016-03-02 2016-03-02 Corrosion-prevention and compression-resistant lithium battery shell and production method therefor

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Application Number Priority Date Filing Date Title
CN201610118290.9A CN105552254A (en) 2016-03-02 2016-03-02 Corrosion-prevention and compression-resistant lithium battery shell and production method therefor

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019002768A1 (en) * 2017-06-29 2019-01-03 I-Ten Encapsulation system for electronic components and batteries
FR3068830A1 (en) * 2017-07-06 2019-01-11 I-Ten ENCAPSULATION SYSTEM FOR ELECTRONIC COMPONENTS AND BATTERIES
JP2022106800A (en) * 2017-01-02 2022-07-20 3ディーバッテリーズ リミテッド Energy storage devices and systems
US11664550B2 (en) 2019-12-23 2023-05-30 I-Ten Encapsulation system for electronic components and batteries
US11967694B2 (en) 2018-05-07 2024-04-23 I-Ten Porous electrodes for electrochemical devices

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022106800A (en) * 2017-01-02 2022-07-20 3ディーバッテリーズ リミテッド Energy storage devices and systems
WO2019002768A1 (en) * 2017-06-29 2019-01-03 I-Ten Encapsulation system for electronic components and batteries
EP3840110A1 (en) * 2017-06-29 2021-06-23 I-Ten Encapsulation system for electronic components and batteries
US11469464B2 (en) 2017-06-29 2022-10-11 I-Ten Encapsulation system for electronic components and batteries
FR3068830A1 (en) * 2017-07-06 2019-01-11 I-Ten ENCAPSULATION SYSTEM FOR ELECTRONIC COMPONENTS AND BATTERIES
US11967694B2 (en) 2018-05-07 2024-04-23 I-Ten Porous electrodes for electrochemical devices
US11664550B2 (en) 2019-12-23 2023-05-30 I-Ten Encapsulation system for electronic components and batteries

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Application publication date: 20160504

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Addressee: Guo Fei

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