CN109053993A - A kind of electrical core of power battery protective materials - Google Patents
A kind of electrical core of power battery protective materials Download PDFInfo
- Publication number
- CN109053993A CN109053993A CN201810895653.9A CN201810895653A CN109053993A CN 109053993 A CN109053993 A CN 109053993A CN 201810895653 A CN201810895653 A CN 201810895653A CN 109053993 A CN109053993 A CN 109053993A
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- China
- Prior art keywords
- power battery
- component
- protective materials
- electrical core
- parts
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary 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
- 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 claimed electrical core of power battery protective materials of the present invention, the protective materials are formed by the B component hybrid reaction for the 20%-50% that component A and quality accounting are the component A；Wherein, the component A includes following raw material: 100 parts of polyether polyol；0.05 part -1.5 parts of catalyst；0.1 part -1.5 parts of foaming agent；0.1 part -10 parts of crosslinking agent；0.1 part -2.5 parts of foam stabiliser；The B component includes isocyanates and/or isocyanate derivates.The protective materials that the present invention is obtained by component A and B component hybrid reaction, the performance for having low pressure contracting and permanent deformation, its 25% compression stress is in 20-800KPa, the compression stress range generated when electrical core of power battery charge and discharge by volume change is satisfied with, so that the protection material applies the function of playing the service life for extending corresponding power battery between the battery core of power battery.
Description
Technical field
The present invention relates to the technical fields of electrical core of power battery, more particularly to a kind of electrical core of power battery protection material
Material.
Background technique
Lithium ion battery is widely used in electronic equipment, power grid energy storage, especially in electric car as energy storage device
In, the core element of storage and output as automobile energy, service life and security performance are directly related to electric car
Performance.
Lithium ion battery as power battery divides according to positive electrode, mainly includes ferric phosphate lithium cell, LiMn2O4
Battery, cobalt acid lithium battery, lithium titanate battery and ternary battery, lithium ion battery negative material are mainly carbon material and non-carbon materials
Material.Illustrate its charge-discharge principle for using graphitic carbon as negative electrode material are as follows: when charging, lithium ion passes through from cathode deintercalation
Electrolyte and diaphragm are embedded into anode, form lithium carbon crystal (LixC6)；When electric discharge, lithium ion is from positive deintercalation, by electrolyte
And diaphragm, it is embedded into cathode again.Wherein, the deintercalation of lithium ion and insertion are along with the expansion and receipts that can cause electrode volume
Contracting, especially cathode seems particularly evident.Some researches show that negative electrode materials from graphite to LixC6, volume will increase 9.7%.Electricity
The volume change of pole always exists in the use process of battery, this variation and then the volume change that can cause single battery core.
It is appreciated that the power battery on electric car is commonly referred to as battery pack, it is made of battery modules, battery modules tool
Body is formed by stacking by tens pieces of single battery core again.The variation of single battery core volume in this way will cause mutual between single battery core
It squeezes, so as to cause very big external stress.However, the service life of lithium ion battery is by the stress influence, on the whole,
The corresponding optimal range of stress of longer service life.
It is therefore desirable to design a kind of elastic material between single battery core, for absorbing the volume change of single battery core, make
Stress between adjacent single battery core is in a preferable range, and so as to improve the service life of power battery.
Summary of the invention
Based on this, it is necessary to for the above technical problems, provide a kind of electrical core of power battery protective materials.
A kind of electrical core of power battery protective materials, the protective materials are the component A by component A and quality accounting
The B component hybrid reaction of 20%-50% form；Wherein,
The component A includes following raw material: 100 parts of polyether polyol；0.05 part -1.5 parts of catalyst；Foaming agent
0.1 part -1.5 parts；0.1 part -10 parts of crosslinking agent；0.1 part -2.5 parts of foam stabiliser；
The B component includes isocyanates and/or isocyanate derivates.
As a preferred solution of the present invention, the polyether polyol is molecular weight in 2000-7000, and degree of functionality be 2 with
On polyalcohol.
As a preferred solution of the present invention, the catalyst includes tertiary amine catalyst and/or organic tin catalyst.
As a preferred solution of the present invention, the foaming agent is water.
As a preferred solution of the present invention, the crosslinking agent is polyalcohol and polyamine of the molecular weight in 50-800.
As a preferred solution of the present invention, the crosslinking agent includes 1,4-butanediol, glycerol, triethanolamine and/or second two
Amine.
As a preferred solution of the present invention, the foam stabiliser is organic silicon surfactant.
As a preferred solution of the present invention, the foam stabiliser includes Niax L-566 and/or Niax L-620.
As a preferred solution of the present invention, the component A further includes foam additive, and the quality accounting of the foam additive
For the 0.5%-5% of the polyether polyol；The foam additive includes pore-creating agent, antioxidant, filler and/or mill base.
As a preferred solution of the present invention, the isocyanates includes aliphatic isocyanates and/or aromatic series isocyanic acid
Ester.
Due to the application of above-mentioned technological means, the present invention has the advantages that compared to the prior art
Electrical core of power battery protective materials provided by the present invention is obtained anti-by component A and B component hybrid reaction
Protective material has the performance of low pressure contracting and permanent deformation, and 25% compression stress is satisfied with power battery electricity in 20-800KPa
The compression stress range generated when core charge and discharge by volume change, so that the protection material is applied and risen between the battery core of power battery
The function of extending the service life of corresponding power battery is arrived.
Specific embodiment
The claimed electrical core of power battery protective materials of the present invention, between concrete application and the battery core of power battery, with
The battery core of flexible adjustment power battery is generated volume change in charge and discharge, and when being satisfied with electrical core of power battery charge and discharge
The compression stress range generated by volume change, so that the battery core part of power battery is in a preferable range, Jin Erqi
To the function for the service life for extending corresponding power battery.
The protective materials of the present embodiment has the B component by the 20%-50% that component A and quality accounting are the component A mixed
Conjunction is reacted.Wherein, the component A is sufficiently mixed with the B component when mixing, and final reaction is met
The protective materials used between the battery core of power battery.
Wherein, the component A includes following raw material: 100 parts of polyether polyol；0.05 part -1.5 parts of catalyst；
0.1 part -1.5 parts of foaming agent；0.1 part -10 parts of crosslinking agent；0.1 part -2.5 parts of foam stabiliser.
In the present embodiment, the polyether polyol is molecular weight in 2000-7000, and degree of functionality be 2 or more it is polynary
Alcohol.Preferably molecular weight is between 3000-6000, the polyalcohol that degree of functionality is 3, for example molecular weight is 5000, and degree of functionality is 3
One or more kinds of mixtures of polyalcohol.
The catalyst includes tertiary amine catalyst and/or organic tin catalyst, specially one of which or two kinds
Above mixture.
The foaming agent is water.
The crosslinking agent is polyalcohol and polyamine of the molecular weight in 50-800, specifically, the crosslinking agent packet of the present embodiment
Include 1,4-butanediol, glycerol, triethanolamine and/or ethylenediamine.
The foam stabiliser is organic silicon surfactant, wherein the foam stabiliser includes polyether-modified organic
Silicon, such as Niax L-566 and/or the Niax L-620 by Mai Tu company of U.S. organic silicon surfactant.
As a preferred solution of the present invention, the component A of the present embodiment may also include foam additive, and with specific reference to using
Demand is added in component A or does not add.Wherein, the foam additive include pore-creating agent, antioxidant, filler and/
Or mill base, and the quality accounting of the foam additive is the 0.5%-5% of the polyether polyol.
B component of the invention includes isocyanates and/or isocyanate derivates, wherein the isocyanates includes fat
Race's isocyanates and/or aromatic isocyanate, such as toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, different Fo Er
Ketone diisocyanate, hexamethylene diisocyanate, dicyclohexyl methyl hydride diisocyanate, naphthalene diisocyanate, to two isocyanide of benzene
Acid esters, polymethylene multi-phenenyl isocyanate, triphenylmethane triisocyanate and their derivative.That is, this reality
Applying B component in example can be above-mentioned toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, isophorone diisocyanate,
Hexamethylene diisocyanate, dicyclohexyl methyl hydride diisocyanate, naphthalene diisocyanate, paraphenylene diisocyanate, polymethylene
More phenyl isocyanates, one of triphenylmethane triisocyanate and their derivative or a variety of mix.
It is appreciated that the foamed material of the present embodiment is set between the battery core of power battery, need to have low compression set shape
Denaturation energy, Compression Set≤30%.Wherein, compression set test specifically can refer to national standard " GBT 6669-2008
The measurement of flexible foam polymeric material compression set ".
The foamed material that component A and B component hybrid reaction obtain in the present embodiment, 25% compression stress is in 20-
Between 800kPa, it is satisfied with the compression stress range generated when electrical core of power battery charge and discharge by volume change, so that this is anti-
Shield material applies the function that the service life for extending corresponding power battery is played between the battery core of power battery.
Below with regard to the component A of different ratio, that reacts after mixing according to a certain percentage with the B component of different ratio is anti-
The compression set percentage of protective material and the stress of 25% compression do and test respectively.
In embodiment, it is described as follows using component A and B component raw material:
Polyether polyol: VORANOL 4701, Dow Chemical, molecular weight 5000, hydroxyl value 34mgKOH/g；
Catalyst: Dabco T-12 (dibutyl tin dilaurate), US Air gasification work；
Foam stabiliser: Niax L-620 (alkane mounted model siloxanes), Mai Tu company of the U.S.；
B component: thick MDI, Huntsman polyurethane company of the U.S., Suprasec 5005, nco value 30.7%, degree of functionality
2.7。
By above-mentioned component A and B component with mass ratio be respectively 100:20,100:30 and 100:50 mode respectively into
Row mixing reflects and obtains corresponding protective materials, and each protective materials is then compressed percent deformation forever respectively, with
And 25% compression stress tested, and it is as follows to obtain corresponding test data:
From the foregoing, it will be observed that the claimed protective materials of the present invention, the protection obtained by component A and B component hybrid reaction
Material, has the performance of low pressure contracting and permanent deformation, and 25% compression stress is satisfied with electrical core of power battery in 20-800KPa
The compression stress range generated when charge and discharge by volume change, so that the protection material is applied and played between the battery core of power battery
Extend the function of the service life of corresponding power battery.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of electrical core of power battery protective materials, it is characterised in that: the protective materials is by component A and quality accounting
The B component hybrid reaction of the 20%-50% of the component A forms；Wherein,
The component A includes following raw material: 100 parts of polyether polyol；0.05 part -1.5 parts of catalyst；Foaming agent 0.1
- 1.5 parts of part；0.1 part -10 parts of crosslinking agent；0.1 part -2.5 parts of foam stabiliser；
The B component includes isocyanates and/or isocyanate derivates.
2. electrical core of power battery protective materials according to claim 1, it is characterised in that: the polyether polyol is point
Son amount is in 2000-7000, and degree of functionality is 2 or more polyalcohol.
3. electrical core of power battery protective materials according to claim 1, it is characterised in that: the catalyst includes tertiary amine
Class catalyst and/or organic tin catalyst.
4. electrical core of power battery protective materials according to claim 1, it is characterised in that: the foaming agent is water.
5. electrical core of power battery protective materials according to claim 1, it is characterised in that: the crosslinking agent is molecular weight
In the polyalcohol and polyamine of 50-800.
6. electrical core of power battery protective materials according to claim 5, it is characterised in that: the crosslinking agent includes Isosorbide-5-Nitrae-
Butanediol, glycerol, triethanolamine and/or ethylenediamine.
7. electrical core of power battery protective materials according to claim 1, it is characterised in that: the foam stabiliser is to have
Organic silicon surface active agent.
8. electrical core of power battery protective materials according to claim 7, it is characterised in that: the foam stabiliser includes
Niax L-566 and/or Niax L-620.
9. electrical core of power battery protective materials according to claim 1, it is characterised in that: the component A further includes bubble
Foam auxiliary agent, and the quality accounting of the foam additive is the 0.5%-5% of the polyether polyol；The foam additive includes opening
Hole agent, antioxidant, filler and/or mill base.
10. electrical core of power battery protective materials according to claim 1, it is characterised in that: the isocyanates includes
Aliphatic isocyanates and/or aromatic isocyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810895653.9A CN109053993A (en) | 2018-08-08 | 2018-08-08 | A kind of electrical core of power battery protective materials |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810895653.9A CN109053993A (en) | 2018-08-08 | 2018-08-08 | A kind of electrical core of power battery protective materials |
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| CN109053993A true CN109053993A (en) | 2018-12-21 |
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| CN201810895653.9A Pending CN109053993A (en) | 2018-08-08 | 2018-08-08 | A kind of electrical core of power battery protective materials |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954585A (en) * | 2023-03-15 | 2023-04-11 | 湖北祥源高新科技有限公司 | Porous foaming material, preparation method thereof, battery module and automobile battery pack |
| WO2024052451A1 (en) | 2022-09-09 | 2024-03-14 | Basf Se | Battery potting material with improved adhesion to metal |
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|---|---|---|---|---|
| US4129697A (en) * | 1976-02-24 | 1978-12-12 | Bayer Aktiengesellschaft | Process for the production of thermoformable polyisocyanurate foams |
| CN1777635A (en) * | 2003-11-17 | 2006-05-24 | Jsr株式会社 | Molded article of thermoplastic elastomer composition and process for producing the same |
| US20090324924A1 (en) * | 2008-06-18 | 2009-12-31 | Guardian Building Products | Process and System For Insulating A Surface Using A Polyurethane Foam Made From A Pre-Reacted Isocyanate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024052451A1 (en) | 2022-09-09 | 2024-03-14 | Basf Se | Battery potting material with improved adhesion to metal |
| CN115954585A (en) * | 2023-03-15 | 2023-04-11 | 湖北祥源高新科技有限公司 | Porous foaming material, preparation method thereof, battery module and automobile battery pack |
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Application publication date: 20181221 |