CN114686182A - Preparation method of environment-friendly cooling liquid for new energy automobile - Google Patents
Preparation method of environment-friendly cooling liquid for new energy automobile Download PDFInfo
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- CN114686182A CN114686182A CN202210484563.7A CN202210484563A CN114686182A CN 114686182 A CN114686182 A CN 114686182A CN 202210484563 A CN202210484563 A CN 202210484563A CN 114686182 A CN114686182 A CN 114686182A
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- 239000000110 cooling liquid Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000005260 corrosion Methods 0.000 claims abstract description 23
- 239000000654 additive Substances 0.000 claims abstract description 16
- 230000000996 additive effect Effects 0.000 claims abstract description 16
- 230000007797 corrosion Effects 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000003112 inhibitor Substances 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 44
- 238000006243 chemical reaction Methods 0.000 claims description 41
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- -1 aliphatic alcohol amine Chemical class 0.000 claims description 11
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims description 10
- 239000003963 antioxidant agent Substances 0.000 claims description 10
- 230000003078 antioxidant effect Effects 0.000 claims description 10
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 10
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 229920001223 polyethylene glycol Polymers 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 150000003627 tricarboxylic acid derivatives Chemical class 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- BFZOTKYPSZSDEV-UHFFFAOYSA-N 4-butan-2-yl-2,6-ditert-butylphenol Chemical compound CCC(C)C1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BFZOTKYPSZSDEV-UHFFFAOYSA-N 0.000 claims description 5
- IPIVUPVIFPKFTG-UHFFFAOYSA-N 4-butyl-2h-benzotriazole Chemical compound CCCCC1=CC=CC2=C1N=NN2 IPIVUPVIFPKFTG-UHFFFAOYSA-N 0.000 claims description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 5
- 239000004327 boric acid Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 5
- 238000006460 hydrolysis reaction Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- XNIOWJUQPMKCIJ-UHFFFAOYSA-N 2-(benzylamino)ethanol Chemical compound OCCNCC1=CC=CC=C1 XNIOWJUQPMKCIJ-UHFFFAOYSA-N 0.000 claims description 3
- MWGATWIBSKHFMR-UHFFFAOYSA-N 2-anilinoethanol Chemical compound OCCNC1=CC=CC=C1 MWGATWIBSKHFMR-UHFFFAOYSA-N 0.000 claims description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005536 corrosion prevention Methods 0.000 abstract description 6
- 229910017053 inorganic salt Inorganic materials 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N 1H-pyrrole Natural products C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 1
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ZYWUVGFIXPNBDL-UHFFFAOYSA-N n,n-diisopropylaminoethanol Chemical compound CC(C)N(C(C)C)CCO ZYWUVGFIXPNBDL-UHFFFAOYSA-N 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/20—Antifreeze additives therefor, e.g. for radiator liquids
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a preparation method of a cooling liquid, and discloses a preparation method of an environment-friendly cooling liquid for a new energy automobile, which comprises the following production steps: (1) synthesizing a base solution; (2) blending an anti-corrosion additive; (3) and preparing environment-friendly cooling liquid. Compared with the cooling liquid in the prior art, the preparation method of the environment-friendly cooling liquid for the new energy automobile does not contain inorganic salt, and is compounded with the organic specific corrosion inhibitor, so that the cooling liquid for the power battery has an excellent metal corrosion prevention effect, has long-acting extremely low conductivity, and meets the requirements of a cooling system for the new energy automobile on cooling liquid, such as corrosion prevention, insulation, long acting and the like.
Description
Technical Field
The invention relates to a preparation method of a cooling liquid, in particular to a preparation method of an environment-friendly cooling liquid for a new energy automobile.
Background
Thereby new energy automobile mainly relies on driving motor to turn into the kinetic energy that the wheel was marchd with the electric energy conversion of power battery storage and orders about the vehicle operation, and the efficiency of the good or bad direct influence battery of power battery's cooling performance also can influence battery life and safe in utilization simultaneously, and power battery's cooling mainly divide into two main types of forced air cooling and liquid cooling at present: the air cooling is divided into natural convection, forced convection of natural wind and forced convection of air conditioner cold wind; the liquid cooling is divided into cooling liquid cooling and refrigerant cooling.
Besides low conductivity, the cooling liquid applied to the new energy automobile power battery also has a protection effect on various metal and non-metal materials of a cooling system, corrosion and leakage are prevented, and meanwhile, the cooling liquid also has the characteristics of good scale prevention, good freezing prevention and the like, so that the preparation method of the environment-friendly cooling liquid for the new energy automobile is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a preparation method of an environment-friendly cooling liquid for a new energy automobile, which has the advantages of high specific heat capacity, high thermal conductivity, low freezing point, high flash point and the like.
(II) technical scheme
In order to realize the purposes of high specific heat capacity and high heat conductivity, and simultaneously having low freezing point and high flash point, the invention provides the following technical scheme: the preparation method of the environment-friendly cooling liquid for the new energy automobile comprises the following production steps of:
(1) synthesizing a base liquid:
putting 20-30 parts of ethylene glycol, 10-20 parts of boric acid and 3-7 parts of aliphatic alcohol amine containing single-end hydroxyl into a reaction kettle in proportion, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 x 10 < -4 > MPa, starting a heating device to gradually heat the reaction kettle, preserving heat for 1-3h at the temperature of 60-100 ℃, pumping out water generated by the reaction by the vacuum pump, controlling the heating speed to be less than or equal to 5 ℃/h, keeping the reaction time to be more than or equal to 12h, slowly heating and preserving heat for 1h at 165 ℃ when the reaction temperature reaches 160-165 ℃, and cooling to normal temperature;
(2) preparing an anti-corrosion additive:
preparing a mixed solution with the concentration of 0.02-3 mol/L from polyethylene glycol, glycerol, poly-tricarboxylic acid and part of ethylene glycol at the temperature of 60-80 ℃, putting the mixed solution into a reaction kettle, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 multiplied by 10-4MPa, stirring for 30 minutes, and cooling to room temperature;
(3) preparing an environment-friendly cooling liquid:
10-25% of ethylene glycol; antioxidant: 1 to 3 percent; anticorrosive additive: 0.1 to 0.5 percent; mercaptobenzothiazole or butylbenzotriazole 0.3-0.7%; hydrolysis-resistant stabilizers: 1.5 to 3.5 percent; 0.1 to 0.3 percent of flame retardant; 1-3% of metal corrosion inhibitor; adding the rest of deionized water into the reaction kettle, controlling the temperature to be 80-120 ℃, stirring for 1-3 hours, cooling to room temperature, adjusting the pH value to be 7.5-9.5, and filtering to obtain the environment-friendly cooling liquid.
Preferably, the aliphatic alcohol amine containing single-end hydroxyl is any one or more of N, N-dimethylethanolamine, N-diethylethanolamine, N-diisopropylethanolamine, N-benzylethanolamine and N-phenylethanolamine.
Preferably, the antioxidant is a combination of 2, 6-di-tert-butyl-4-sec-butyl phenol and bisphenol A in a mass ratio of 1: 1-5.
Preferably, the anti-corrosion additive is prepared from the following components in a mass ratio of 1: (2-3): (1-2) polyethylene glycol, glycerol and poly-tricarboxylic acid.
(III) advantageous effects
Compared with the prior art, the invention provides a preparation method of an environment-friendly cooling liquid for a new energy automobile, which has the following beneficial effects:
1. a layer of compact film is formed on the surface of copper by using azole compounds, so that the corrosion of the copper can be effectively inhibited, the cooling liquid of a power battery is prevented from corroding automobile parts, the working efficiency of the cooling liquid is greatly improved, and the service life of an electric automobile is prolonged.
2. The automobile cooling liquid adopts deionized water, and effectively solves the problem of system leakage caused by dirt formed by calcium and magnesium ion deposition.
Compared with the cooling liquid in the prior art, the cooling liquid for the power battery of the new energy automobile does not contain inorganic salt, is compounded with an organic corrosion inhibitor with special effect, has excellent metal corrosion prevention effect, has long-acting extremely low conductivity, and meets the requirements of a cooling system of the power battery of the new energy automobile on cooling liquid, corrosion prevention, insulation, long acting and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of an environment-friendly cooling liquid for a new energy automobile comprises the following production steps:
(1) synthesizing a base liquid:
putting 20 parts of ethylene glycol, 10 parts of boric acid and 3 parts of aliphatic alcohol amine containing single-end hydroxyl into a reaction kettle in proportion, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 multiplied by 10 < -4 > MPa, starting a heating device to gradually heat the reaction kettle, preserving heat for 1h at a temperature of 60 ℃, pumping out water generated by reaction by the vacuum pump, controlling the heating speed to be less than or equal to 5 ℃/h, and controlling the reaction time to be more than or equal to 12h, slowly heating when the reaction temperature reaches 160 ℃, then preserving heat for 1h at 165 ℃, and cooling to normal temperature;
(2) preparing an anti-corrosion additive:
preparing a mixed solution with the concentration of 0.02mol/L from polyethylene glycol, glycerol, poly-tricarboxylic acid and part of ethylene glycol at the temperature of 60 ℃, putting the mixed solution into a reaction kettle, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 multiplied by 10 < -4 > MPa, stirring for 30 minutes, and cooling to room temperature;
(3) preparing an environment-friendly cooling liquid:
10% of ethylene glycol; antioxidant: 1 percent; anticorrosive additive: 0.1 percent; mercaptobenzothiazole or butylbenzotriazole 0.3%; hydrolysis-resistant stabilizers: 1.5 percent; 0.1 percent of flame retardant; 1% of metal corrosion inhibitor; adding the rest of deionized water into the reaction kettle, controlling the temperature to be 80 ℃, stirring for 1 hour, cooling to room temperature, adjusting the pH value to 7.5, and filtering to obtain the environment-friendly cooling liquid.
Further, the aliphatic alcohol amine containing a single terminal hydroxyl group is N, N-dimethylethanolamine and N, N-diethylethanolamine.
Further, the antioxidant is a combination of 2, 6-di-tert-butyl-4-sec-butyl phenol and bisphenol A in a mass ratio of 1: 1-5.
Further, the anti-corrosion additive is prepared from the following components in a mass ratio of 1: (2-3): (1-2) polyethylene glycol, glycerol and poly-tricarboxylic acid.
Example 2
A preparation method of an environment-friendly cooling liquid for a new energy automobile comprises the following production steps:
(1) synthesizing a base liquid:
putting 25 parts of ethylene glycol, 15 parts of boric acid and 5 parts of aliphatic alcohol amine containing single-end hydroxyl into a reaction kettle in proportion, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 x 10 < -4 > MPa, starting a heating device to gradually raise the temperature of the reaction kettle, preserving the temperature for 2 hours at a temperature of 80 ℃, pumping out water generated by reaction by the vacuum pump, controlling the temperature raising speed to be less than or equal to 5 ℃/h, keeping the reaction time to be more than or equal to 12 hours, slowly heating when the reaction temperature reaches 162 ℃, preserving the temperature for 1 hour at 165 ℃, and cooling to normal temperature;
(2) preparing an anti-corrosion additive:
preparing a mixed solution with the concentration of 0.2-3 mol/L from polyethylene glycol, glycerol, poly-tricarboxylic acid and part of ethylene glycol at the temperature of 70 ℃, putting the mixed solution into a reaction kettle, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 multiplied by 10 < -4 > MPa, stirring for 30 minutes, and cooling to room temperature;
(3) preparing an environment-friendly cooling liquid:
15% of ethylene glycol; antioxidant: 2 percent; anticorrosive additive: 0.3 percent; mercaptobenzothiazole or butylbenzotriazole 0.5%; hydrolysis-resistant stabilizers: 2.5 percent; 0.2 percent of flame retardant; 2% of metal corrosion inhibitor; adding the rest of deionized water into the reaction kettle, controlling the temperature to be 100 ℃, stirring for 2 hours, cooling to room temperature, adjusting the pH value to 8.5, and filtering to obtain the environment-friendly cooling liquid.
Further, the aliphatic alcohol amine containing single-end hydroxyl is N, N-diisopropyl ethanolamine and N-benzyl ethanolamine.
Further, the antioxidant is a combination of 2, 6-di-tert-butyl-4-sec-butyl phenol and bisphenol A in a mass ratio of 1: 2.
Further, the anti-corrosion additive is prepared from the following components in a mass ratio of 1: (2-3): (1-2) polyethylene glycol, glycerol and poly-tricarboxylic acid.
Example 3
A preparation method of an environment-friendly cooling liquid for a new energy automobile comprises the following production steps:
(1) synthesizing a base liquid:
putting 30 parts of ethylene glycol, 20 parts of boric acid and 7 parts of aliphatic alcohol amine containing single-end hydroxyl into a reaction kettle in proportion, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 multiplied by 10 < -4 > MPa, starting a heating device to gradually heat the reaction kettle, preserving heat for 3 hours at a temperature of 100 ℃, pumping out water generated by reaction by the vacuum pump, controlling the heating speed to be less than or equal to 5 ℃/h, and keeping the reaction time to be more than or equal to 12 hours, and when the reaction temperature reaches 165 ℃, preserving heat for 1 hour at 165 ℃, and cooling to normal temperature;
(2) preparing an anti-corrosion additive:
preparing a mixed solution with the concentration of 3mol/L from polyethylene glycol, glycerol, poly-tricarboxylic acid and part of ethylene glycol at the temperature of 80 ℃, putting the mixed solution into a reaction kettle, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 multiplied by 10 < -4 > MPa, stirring for 30 minutes, and cooling to room temperature;
(3) preparing an environment-friendly cooling liquid:
25% of ethylene glycol; antioxidant: 3 percent; anticorrosive additive: 0.5 percent; mercaptobenzothiazole or butylbenzotriazole 0.7%; hydrolysis-resistant stabilizers: 3.5 percent; 0.3 percent of flame retardant; 3% of metal corrosion inhibitor; adding the rest of deionized water into the reaction kettle, controlling the temperature to be 120 ℃, stirring for 3 hours, cooling to room temperature, adjusting the pH value to 9.5, and filtering to obtain the environment-friendly cooling liquid.
Further, the aliphatic alcohol amine containing a single terminal hydroxyl group is N-phenyl ethanolamine.
Further, the antioxidant is a combination of 2, 6-di-tert-butyl-4-sec-butyl phenol and bisphenol A in a mass ratio of 1: 5.
Further, the anti-corrosion additive is prepared from the following components in a mass ratio of 1: (2-3): (1-2) polyethylene glycol, glycerol and poly-tricarboxylic acid.
The coolant of example 3 of the present invention was subjected to a performance test according to the metal corrosion test method described above, and the conductivity values before and after the test were measured to obtain performance index data and comparative data with the conventional coolant, as shown in table 1.
TABLE 1 index of performance of cooling liquid for power battery
In summary, according to the preparation method of the environment-friendly coolant for the new energy automobile, the azole compound is used for forming a layer of compact film on the surface of copper, so that the corrosion of the copper can be effectively inhibited, the coolant for the power battery is prevented from corroding automobile parts, the working efficiency of the coolant is greatly improved, and the service life of the electric automobile is prolonged.
The automobile cooling liquid adopts deionized water, and effectively solves the problem of system leakage caused by dirt formed by calcium and magnesium ion deposition.
Compared with the cooling liquid in the prior art, the cooling liquid for the power battery of the new energy automobile does not contain inorganic salt, is compounded with an organic corrosion inhibitor with special effect, has excellent metal corrosion prevention effect, has long-acting extremely low conductivity, and meets the requirements of a cooling system of the power battery of the new energy automobile on cooling liquid, corrosion prevention, insulation, long acting and the like.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The preparation method of the environment-friendly cooling liquid for the new energy automobile is characterized by comprising the following production steps of:
(1) synthesizing a base liquid:
putting 20-30 parts of ethylene glycol, 10-20 parts of boric acid and 3-7 parts of aliphatic alcohol amine containing single-end hydroxyl into a reaction kettle in proportion, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 x 10 < -4 > MPa, starting a heating device to gradually heat the reaction kettle, preserving heat for 1-3h at the temperature of 60-100 ℃, pumping out water generated by the reaction by the vacuum pump, controlling the heating speed to be less than or equal to 5 ℃/h, keeping the reaction time to be more than or equal to 12h, slowly heating and preserving heat for 1h at 165 ℃ when the reaction temperature reaches 160-165 ℃, and cooling to normal temperature;
(2) preparing an anti-corrosion additive:
preparing a mixed solution with the concentration of 0.02-3 mol/L from polyethylene glycol, glycerol, poly-tricarboxylic acid and part of ethylene glycol at the temperature of 60-80 ℃, putting the mixed solution into a reaction kettle, starting a vacuum pump to control the pressure of the reaction kettle to be 5.0 multiplied by 10-4MPa, stirring for 30 minutes, and cooling to room temperature;
(3) preparing an environment-friendly cooling liquid:
10-25% of glycol; antioxidant: 1 to 3 percent; anticorrosive additive: 0.1 to 0.5 percent; mercaptobenzothiazole or butylbenzotriazole 0.3-0.7%; hydrolysis-resistant stabilizers: 1.5 to 3.5 percent; 0.1 to 0.3 percent of flame retardant; 1-3% of metal corrosion inhibitor; adding the rest of deionized water into the reaction kettle, controlling the temperature to be 80-120 ℃, stirring for 1-3 hours, cooling to room temperature, adjusting the pH value to be 7.5-9.5, and filtering to obtain the environment-friendly cooling liquid.
2. The preparation method of the environment-friendly coolant for new energy vehicles according to claim 1, wherein the aliphatic alcohol amine containing a single terminal hydroxyl group is any one or more of N, N-dimethylethanolamine, N-diethylethanolamine, N-diisopropylethanolamine, N-benzylethanolamine, and N-phenylethanolamine.
3. The preparation method of the environment-friendly cooling liquid for the new energy automobile as claimed in claim 1, wherein the antioxidant is a combination of 2, 6-di-tert-butyl-4-sec-butylphenol and bisphenol A in a mass ratio of 1: 1-5.
4. The preparation method of the environment-friendly coolant for the new energy automobile according to claim 1, characterized by comprising the following steps: the anti-corrosion additive is prepared from the following components in a mass ratio of 1: (2-3): (1-2) polyethylene glycol, glycerol and poly-tricarboxylic acid.
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| CN202210484563.7A CN114686182A (en) | 2022-05-06 | 2022-05-06 | Preparation method of environment-friendly cooling liquid for new energy automobile |
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| CN101768428A (en) * | 2008-12-31 | 2010-07-07 | 中国蓝星（集团）股份有限公司 | Engine coolant |
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