CN116218484A - Hydrogen fuel cell cooling liquid and preparation method thereof - Google Patents
Hydrogen fuel cell cooling liquid and preparation method thereof Download PDFInfo
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- CN116218484A CN116218484A CN202211404769.0A CN202211404769A CN116218484A CN 116218484 A CN116218484 A CN 116218484A CN 202211404769 A CN202211404769 A CN 202211404769A CN 116218484 A CN116218484 A CN 116218484A
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- fuel cell
- hydrogen fuel
- stirring
- cooling liquid
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Electrochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Fuel Cell (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a hydrogen fuel cell cooling liquid, which comprises the following components in percentage by weight: 55.00% of ethylene glycol; 0.10-1.00% of corrosion inhibitor; 0.01 to 0.1 percent of ion inhibitor; 0.0001 to 0.001 percent of defoaming agent; and the balance of pure water. The hydrogen fuel cell cooling liquid has low conductivity, high corrosion inhibition performance and ion inhibition performance, and can effectively prolong the service life of the hydrogen fuel cell.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a hydrogen fuel cell cooling liquid and a preparation method thereof.
Background
The power supply voltage of the hydrogen fuel cell ranges from 300V to 600V, which is far higher than that of the traditional fuel automobile. GB/T18384.3-2015 part 3 of electric automobile safety requirement: personnel electric shock protection clearly prescribes the instantaneous insulation resistance: the minimum value of the alternating current insulation resistance is 0.5kΩ/V, and the minimum value of the direct current insulation resistance is 0.1kΩ/V, so the insulation resistance design of the hydrogen fuel cell stack is very important. Thus, the conductivity requirement of the hydrogen fuel cell coolant is less than or equal to 2 μs/cm, which is published in TCAS 548-2021, hydrogen fuel cell coolant. In the actual operation of the hydrogen fuel cell cooling system, the conductivity of the system can be increased along with the operation time, ions in metal and nonmetal pipelines in the system can be separated out, the conductivity is increased, and the system is required to be used in a matched way for deionization, so that the conductivity of the cooling liquid is stabilized within 2 mu s/cm. The hydrogen fuel cell coolant products have little report on the suppression of conductivity rise during the operation of the cooling system.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a hydrogen fuel cell cooling liquid and a preparation method thereof. The cooling liquid has low conductivity, high corrosion inhibition performance and ion inhibition performance, and prolongs the service life of the hydrogen fuel cell.
The aim and the technical problems of the invention are realized by adopting the following technical proposal.
The invention provides a hydrogen fuel cell cooling liquid, which comprises the following components in percentage by weight:
55.00% of ethylene glycol;
0.10-1.00% of corrosion inhibitor;
0.01 to 0.1 percent of ion inhibitor;
0.0001 to 0.001 percent of defoaming agent;
and the balance of pure water.
Preferably, the corrosion inhibitor is selected from one or two of benzotriazole, methylbenzoxazole, uracil and polyvinylpyrrolidone.
Preferably, the ionic inhibitor is rhamnolipid.
Preferably, the defoamer is an ethylene oxide and propylene oxide copolymerized GPE type polyether having a molecular weight of 3000.
Preferably, the defoamer has a molecular weight of 3000.
The aim and the technical problems of the invention are also realized by adopting the following technical proposal.
The invention provides a preparation method of hydrogen fuel cell cooling liquid, which comprises the following steps:
s1: adding pure water into a stirring kettle, starting stirring, adding a corrosion inhibitor in the stirring process, stirring for 30min, adding an ion inhibitor, continuously stirring for 30min, adding ethylene glycol, and stirring for 30min to obtain a first product;
s2: and (3) pre-dissolving the defoaming agent by using glycol, adding the pre-dissolved defoaming agent into the first product, and stirring for 30min to obtain the hydrogen fuel cell cooling liquid.
Preferably, the mass ratio of the defoamer to the ethylene glycol in the step S2 is 1:10.
Preferably, the hydrogen fuel cell coolant related test performance is as follows:
conductivity (20 ℃ C.). Less than or equal to 2 mu s/cm;
glassware test (80 ℃,336 h): brass ± 2 mg/piece; red copper (+ -2 mg/tablet; 3A21 aluminum (+ -2 mg/tablet; 5A05 aluminum (+ -2 mg/tablet; 6063 aluminum ± 2 mg/tablet; 304 stainless steel (+ -2 mg/piece;
ion inhibition performance: the conductivity change is less than or equal to 2 mu s/cm.
By means of the technical scheme, the invention has at least the following advantages: the cooling liquid disclosed by the invention has the advantages of low conductivity, high corrosion inhibition performance and ion inhibition performance, and can effectively prolong the service life of a hydrogen fuel cell.
The foregoing description is only an overview of the present invention, and is intended to provide a more thorough understanding of the present invention, and is to be accorded the full scope of the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement of the purposes and the effects of the present invention easy to understand, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides a hydrogen fuel cell cooling liquid and a preparation method thereof:
the composition of the cooling liquid is as follows (mass percent): 55.00% of ethylene glycol, 0.1% of benzotriazole, 0.1% of polyvinylpyrrolidone, 0.01% of rhamnolipid, 0.0001% of GPE type polyether (molecular weight 3000), pure water and the balance.
The preparation method of the cooling liquid comprises the following steps: firstly, adding pure water into a stirring kettle, and starting stirring; and a second step of: adding corrosion inhibitor, and stirring for 30min; and a third step of: adding ion inhibitor, and stirring for 30min; fourth step: adding ethylene glycol, and stirring for 30min; fifth step: the defoaming agent is added into a stirring kettle after being pre-dissolved by glycol with the mass being 10 times of that of the defoaming agent, and is stirred for 30 minutes to obtain the hydrogen fuel cell cooling liquid.
Example 2
The embodiment provides a hydrogen fuel cell cooling liquid and a preparation method thereof:
the composition of the cooling liquid is as follows (mass percent): 55.00% of ethylene glycol, 1.0% of methyl benzotriazol, 0.05% of rhamnolipid, 0.001% of GPE type polyether (molecular weight 3000), pure water and the balance.
The preparation method of the cooling liquid comprises the following steps: firstly, adding pure water into a stirring kettle, and starting stirring; and a second step of: adding corrosion inhibitor, and stirring for 30min; and a third step of: adding ion inhibitor, and stirring for 30min; fourth step: adding ethylene glycol, and stirring for 30min; fifth step: the defoaming agent is added into a stirring kettle after being pre-dissolved by glycol with the mass being 10 times of that of the defoaming agent, and is stirred for 30 minutes to obtain the hydrogen fuel cell cooling liquid.
Example 3
The embodiment provides a hydrogen fuel cell cooling liquid and a preparation method thereof:
the composition of the cooling liquid is as follows (mass percent): 55.00% of ethylene glycol, 0.05% of benzotriazole, 0.05% of uracil, 0.1% of rhamnolipid, 0.001% of GPE type polyether (molecular weight 3000), pure water and the balance.
The preparation method of the cooling liquid comprises the following steps: firstly, adding pure water into a stirring kettle, and starting stirring; and a second step of: adding corrosion inhibitor, and stirring for 30min; and a third step of: adding ion inhibitor, and stirring for 30min; fourth step: adding ethylene glycol, and stirring for 30min; fifth step: the defoaming agent is added into a stirring kettle after being pre-dissolved by glycol with the mass being 10 times of that of the defoaming agent, and is stirred for 30 minutes to obtain the hydrogen fuel cell cooling liquid.
Comparative example 1
Commercial hydrogen fuel cell automotive coolant products.
Test example 1 Hydrogen fuel cell coolant performance test
Conductivity, glassware and ion inhibition performance tests were performed with the hydrogen fuel cell coolant of examples 1-3 and comparative example 1 (commercial hydrogen fuel cell vehicular coolant product), and the standards referred to and the results obtained are shown in table 1.
TABLE 1 Performance test results of different coolants
The results in Table 1 show that the hydrogen fuel cell coolant of the invention has low conductivity, high corrosion inhibition performance and ion inhibition performance.
While the invention has been described with respect to preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and that any such changes and modifications as described in the above embodiments are intended to be within the scope of the invention.
Claims (7)
1. A hydrogen fuel cell coolant, characterized in that the coolant comprises the following components in percentage by weight:
55.00% of ethylene glycol;
0.10-1.00% of corrosion inhibitor;
0.01 to 0.1 percent of ion inhibitor;
0.0001 to 0.001 percent of defoaming agent;
and the balance of pure water.
2. The hydrogen fuel cell coolant according to claim 1, wherein the corrosion inhibitor is one or two selected from the group consisting of benzotriazole, methylbenzoxazole, uracil, and polyvinylpyrrolidone.
3. The hydrogen fuel cell coolant according to claim 1, wherein the ion inhibitor is rhamnolipid.
4. The hydrogen fuel cell coolant according to claim 1, wherein the antifoaming agent is an ethylene oxide and propylene oxide copolymerized GPE-type polyether.
5. The hydrogen fuel cell coolant according to claim 1, wherein the antifoaming agent has a molecular weight of 3000.
6. A method for producing the hydrogen fuel cell coolant according to any one of claims 1 to 5, characterized by comprising the steps of:
s1: adding pure water into a stirring kettle, starting stirring, adding a corrosion inhibitor in the stirring process, stirring for 30min, adding an ion inhibitor, continuously stirring for 30min, adding ethylene glycol, and stirring for 30min to obtain a first product;
s2: and (3) pre-dissolving the defoaming agent by using glycol, adding the pre-dissolved defoaming agent into the first product, and stirring for 30min to obtain the hydrogen fuel cell cooling liquid.
7. The method for producing a hydrogen fuel cell coolant according to claim 6, wherein the mass ratio of the antifoaming agent to the ethylene glycol in step S2 is 1:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211404769.0A CN116218484A (en) | 2022-11-10 | 2022-11-10 | Hydrogen fuel cell cooling liquid and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211404769.0A CN116218484A (en) | 2022-11-10 | 2022-11-10 | Hydrogen fuel cell cooling liquid and preparation method thereof |
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| CN116218484A true CN116218484A (en) | 2023-06-06 |
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| CN202211404769.0A Pending CN116218484A (en) | 2022-11-10 | 2022-11-10 | Hydrogen fuel cell cooling liquid and preparation method thereof |
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| CN (1) | CN116218484A (en) |
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2022
- 2022-11-10 CN CN202211404769.0A patent/CN116218484A/en active Pending
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