CN114100392A - Preparation method of non-contact hydrogen fuel cell cooling liquid - Google Patents
Preparation method of non-contact hydrogen fuel cell cooling liquid Download PDFInfo
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- CN114100392A CN114100392A CN202111344990.7A CN202111344990A CN114100392A CN 114100392 A CN114100392 A CN 114100392A CN 202111344990 A CN202111344990 A CN 202111344990A CN 114100392 A CN114100392 A CN 114100392A
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- cooling liquid
- fuel cell
- hydrogen fuel
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- plastic
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- 239000000446 fuel Substances 0.000 title claims abstract description 30
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 25
- 239000001257 hydrogen Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000110 cooling liquid Substances 0.000 title abstract description 40
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000002826 coolant Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims description 20
- 229920003023 plastic Polymers 0.000 claims description 20
- -1 polyethylene Polymers 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 8
- 229910021645 metal ion Inorganic materials 0.000 abstract description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 6
- 239000001569 carbon dioxide Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000005303 weighing Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000012809 cooling fluid Substances 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000003254 anti-foaming effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910021654 trace metal Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses a preparation method of a non-contact hydrogen fuel cell coolant, which comprises the steps of weighing required materials according to a coolant formula, adding the materials into a clean non-metal container, sealing, and then placing the container on a rolling device for rolling, stirring and mixing. Because the raw materials used by the cooling liquid are all liquid, the purpose of uniform mixing can be easily achieved through rolling for a period of time, the container is always in a closed state during mixing, metal ion foreign matters and carbon dioxide cannot be mixed, and the increase of the electric conductivity and the reduction of the pH value cannot be caused.
Description
Technical Field
The invention belongs to a preparation method of a hydrogen fuel cell cooling liquid, and belongs to the field of new energy.
Background
With the improvement of living standard of people and the development of automobile industry, the total quantity of automobiles in the world is increasing at the speed of 3000 thousands of automobiles per year at present, but the current crisis of energy scarcity and the pollution crisis of tail gas emission are strong, so that new energy automobiles are valued and popularized by automobile people. With the emergence of new energy environment-friendly automobiles with wide prospects in the 21 st century, namely hydrogen fuel cell automobiles, the development of the global automobile industry towards the direction of energy conservation and environmental protection is pioneered, hydrogen fuel cell buses and heavy trucks are rapidly developed, and the hydrogen fuel cell buses and heavy trucks in various regions bloom all the time.
In the research and commercial development of hydrogen fuel cell vehicles, engine coolant is one of the essential key materials in the engine, and is completely different from the coolant of the traditional gasoline vehicle. The water pump and the radiator of the engine can be damaged due to serious corrosion and vibration, so people begin to put attention to other properties of the cooling liquid besides the anti-freezing property of the cooling liquid, and put more demands on the cooling liquid. For example, additional functions such as corrosion resistance and anti-foaming property are required to reduce corrosion to an engine and a radiator and reduce the cavitation failure rate of a water pump. However, the bipolar plate in the hydrogen fuel cell engine requires a very low corrosion rate to prolong the service life of the stack, so that the hydrogen fuel cell cooling system has very high requirement on a cooling medium, a special cooling liquid with ultralow conductivity needs to be used, and the normal operation of the hydrogen fuel cell engine cannot be met because the conductivity of the common gasoline car cooling liquid is greater than 1000 muS/cm.
Compared with the traditional power, the hydrogen fuel cell is suitable for working at the temperature of 70-80 ℃, 80-90% of heat is generated in a cathode side catalyst layer due to ohmic resistance, generated water vapor condensation heat release and enthalpy change of electrochemical reaction (heat exchange is carried out through a bipolar plate) during working, and about 95% of heat is carried away by depending on cooling liquid. The cooling fluid circulates in the channels of the bipolar plates inside the stack, taking away the generated heat. The hydrogen fuel cell cooling liquid can cause irreparable damage to a fuel cell engine due to improper use, and the most obvious phenomenon is that the conductivity sharply rises to cause insulation failure of the fuel cell, and the service life of the fuel cell is directly damaged and the power is attenuated when the fuel cell is serious, so that the normal operation of a vehicle cannot be met. Although the current research on corrosion inhibitors can solve the problem of corrosion of cooling liquid to various metals, the corrosion inhibitors all have the problem of high conductivity (the conductivity is more than 1000 mu S/cm), once leakage occurs, short circuit damage is caused to peripheral electronic devices, and the corrosion inhibitors have great risks when used on hydrogen fuel cell stacks with extremely strict requirements.
The hydrogen fuel cell stack releases heat in the reaction process, and a liquid cooling heat dissipation scheme is required. The cooling liquid is generally an aqueous solution of ethylene glycol, and the cooling liquid is an important heat transfer medium in a liquid cooling system, does not cause corrosion hazard to the system, does not influence the power generation efficiency of the fuel cell, and has the non-conducting or low-conducting characteristic. The conductivity is generally required to be less than 2 mus/cm, so the production of a device for preparing a cooling liquid with low conductivity also needs to be specially designed to ensure that metal ions, non-metal ions and carbon dioxide in the air cannot be mixed in the production and manufacturing process.
The commonly used stirrer in the traditional gasoline car cooling liquid production process is a metal stirring kettle, stirring blades are also metal, and collision friction between the metal blades and the metal reaction kettle can cause trace metal fragments to be mixed into the cooling liquid in the stirring process, and partial metal ions can be dissolved into the cooling liquid to cause the increase of the conductivity. Meanwhile, the stirring kettle can accelerate carbon dioxide in the air to be dissolved in cooling liquid in the mechanical stirring process, so that the pH value is reduced, the conductivity is indirectly increased, and the product quality is influenced.
Disclosure of Invention
In view of the above problems, it is an object of the present application to provide a method for producing a coolant for a non-contact hydrogen fuel cell.
The above object of the invention is achieved by the features of the independent claims, the dependent claims developing the features of the independent claims in alternative or advantageous ways.
The technical solution for realizing the purpose of the invention is as follows: a preparation method of a non-contact hydrogen fuel cell coolant comprises the following steps:
weighing the required materials according to the formula of the cooling liquid, adding the materials into a clean non-metallic container, sealing, and then placing the container on a rolling device for rolling, stirring and mixing.
Preferably, the non-metallic container comprises a plastic container, such as polyurethane plastic, polyethylene plastic, polypropylene plastic, preferably polyethylene plastic.
Preferably, the rolling device adopts double rollers of a ball mill or a device with double roller shafts.
Preferably, the rotating speed of the rolling device is 1-100 rpm, preferably 50-100 rpm, and the stirring and mixing time is 10-60 min.
Preferably, the volume of the non-metallic container is 10L-200L.
Compared with the prior art, the invention has the following advantages:
because the raw materials used by the formula of the cooling liquid are mostly liquid, the purpose of uniform mixing can be easily achieved through rolling for a period of time, the container made of the nonmetal material is always in a closed state during mixing, metal ions and carbon dioxide cannot be mixed, the conductivity of the cooling liquid cannot be increased, the pH value cannot be reduced, and the product quality is not influenced completely.
It should be understood that all combinations of the aforementioned concepts and additional concepts described in greater detail below can be considered part of the inventive subject matter of the present application, provided that such concepts do not contradict each other. In addition, all combinations of claimed subject matter are considered a part of the inventive subject matter of this application.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
FIG. 1 is a schematic view of a non-contact stirring process according to the present invention.
Detailed Description
For a better understanding of the technical content of the invention, specific embodiments are described below in conjunction with the accompanying drawings.
Aspects of the invention are described herein with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the invention are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
The performance requirements of the cooling liquid for the hydrogen fuel cell vehicle are greatly different from the performance requirements of the cooling liquid for the conventional gasoline vehicle, the biggest difference is that the electrical conductivity of the cooling liquid for the hydrogen fuel cell vehicle is very low and is generally less than 2 mu S/cm, and if the cooling liquid for the hydrogen fuel cell vehicle is mixed and stirred by using a conventional metal stirring blade in the preparation process, metal ions and carbon dioxide in the air can be possibly mixed, so that the electrical conductivity is increased, the pH value is reduced, and the product quality is influenced. Therefore, the invention provides a preparation method of the non-contact hydrogen fuel cell cooling liquid.
Referring to fig. 1, the preparation method of the cooling liquid for the non-contact hydrogen fuel cell according to the present invention specifically comprises the following steps:
taking the hydrogen fuel cell vehicle coolant as an example, the coolant is composed of high-purity ethylene glycol, a corrosion inhibitor, a pH stabilizer, a foam inhibitor, a dye for identifying color and the like.
Weighing all materials according to the formula of the cooling liquid in a certain proportion, adding the materials into a clean polyethylene plastic barrel, sealing, then putting the sealed polyethylene plastic barrel on double rollers of a ball mill for rolling and mixing, and rolling for a period of time to produce the cooling liquid with low conductivity and stable pH value.
The plastic barrel is made of inert materials corresponding to the cooling liquid, cannot dissolve out metal ions or non-metal ions, cannot influence the conductivity and the pH value of the cooling liquid, and is preferably made of polyethylene plastic barrels.
The raw materials used in the formula of the cooling liquid are mostly liquid, so that the purpose of uniform mixing can be easily achieved through rolling for a period of time, and the polyethylene plastic barrel is always in a closed state during mixing, so that metal ions and carbon dioxide cannot be mixed, and the increase of the conductivity and the reduction of the pH value cannot be caused.
The ball mill can be a common device with a speed regulating device in the market. And selecting a ball mill with matched power according to the size and the shape of the polyethylene plastic barrel. The rotating speed and the mixing (rolling) time of the ball mill roller can be adjusted according to the volume of liquid contained in the polyethylene plastic barrel, the volume is large, the rotating speed of the roller is slow, and the stirring time can be properly prolonged. The rotating speed of the roller can be controlled within 1-100 rpm generally, the mixing time is controlled within 10-60 min, and the volume of the plastic barrel can correspond to 10-200L.
Example-1 presents comparative data (see table 1) of conductivity and pH of a cooling fluid prepared by non-contact stirring (a cooling fluid with a freezing point of-35 ℃), with a roller rotation speed of 90rpm and a fluid capacity of 10L.
Example-2 sets forth comparative data (see Table 2) of conductivity and pH for a cooling fluid prepared using non-contact agitation (a cooling fluid with a freezing point of-45℃.) wherein the roller was rotated at 90rpm and the fluid capacity was 200L.
Comparative example-1 is the conductivity and pH (see Table 3) of a cooling liquid (-35 ℃ freezing point cooling liquid) prepared using a general stainless stirring vessel and a stainless stirring blade, wherein the stirring speed was 90rpm and the liquid capacity was 10L.
Comparative example-2 is the conductivity and pH (see Table 4) of a cooling liquid (-45 ℃ freezing point cooling liquid) prepared using a general stainless stirring vessel and a stainless stirring blade, wherein the stirring rate was 90rpm and the liquid capacity was 200L.
TABLE 1
TABLE 2
TABLE 3
TABLE 4
The preparation method of the non-contact hydrogen fuel cell cooling liquid has the advantages that the obtained cooling liquid has lower conductivity and smaller pH value change under the condition of the same stirring time, and the non-contact stirring has obvious advantages for producing high-quality cooling liquid.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (8)
1. A preparation method of non-contact hydrogen fuel cell coolant is characterized in that required materials are weighed according to a coolant formula, added into a clean non-metal container, sealed and placed on a rolling device for rolling, stirring and mixing.
2. The method of claim 1, wherein the non-metallic container comprises a plastic container.
3. The method of claim 2, wherein the plastic is any one of polyurethane plastic, polyethylene plastic, and polypropylene plastic.
4. The method of claim 2, wherein the plastic is polyethylene plastic.
5. The method of claim 1, wherein the rolling device is a double roller of a ball mill or a device with double roller shafts.
6. A method according to claim 1 or 5, wherein the rolling device is rotated at a speed of 1 to 100rpm, preferably 5 to 50 rpm.
7. The method of claim 1, wherein the mixing time is 10min to 60 min.
8. The method of claim 1, wherein the volume of the non-metallic container is 10L to 200L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111344990.7A CN114100392A (en) | 2021-11-15 | 2021-11-15 | Preparation method of non-contact hydrogen fuel cell cooling liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111344990.7A CN114100392A (en) | 2021-11-15 | 2021-11-15 | Preparation method of non-contact hydrogen fuel cell cooling liquid |
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| Publication Number | Publication Date |
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| CN114100392A true CN114100392A (en) | 2022-03-01 |
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| CN202111344990.7A Withdrawn CN114100392A (en) | 2021-11-15 | 2021-11-15 | Preparation method of non-contact hydrogen fuel cell cooling liquid |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005129384A (en) * | 2003-10-24 | 2005-05-19 | Calsonic Kansei Corp | Coolant and fuel cell cooling system using the same |
| JP2005183015A (en) * | 2003-12-16 | 2005-07-07 | Calsonic Kansei Corp | Fuel cell cooling system and coating agent used for the same |
| US8287176B1 (en) * | 2008-07-14 | 2012-10-16 | Kughn William C | Antifreeze dyeing/mixing systems and methods |
| CN103464042A (en) * | 2013-08-30 | 2013-12-25 | 蚌埠市阳光粉沫涂料有限责任公司 | Drum-type stirring device |
| JP2017097958A (en) * | 2015-11-18 | 2017-06-01 | シーシーアイ株式会社 | Fuel cell coolant container and fuel cell coolant storage method |
| CN108102616A (en) * | 2017-12-22 | 2018-06-01 | 扬州中德汽车零部件有限公司 | Low conductivity super long effective organic type fuel cell anti-freeze cooling liquid and preparation method thereof |
| CN209125996U (en) * | 2018-07-28 | 2019-07-19 | 南京英达公路养护车制造有限公司 | A kind of roller bin with manual-operated emergent device |
| CN111151182A (en) * | 2018-11-07 | 2020-05-15 | 中国科学院大学 | Method and device for driving and transporting low-conductivity liquid by using high-frequency traveling wave magnetic field |
| CN112139472A (en) * | 2020-10-17 | 2020-12-29 | 陈金发 | Device and method for rapidly preparing semi-solid metal slurry |
| CN113528096A (en) * | 2021-07-29 | 2021-10-22 | 胡叶根 | Efficient heat transfer hydrogen fuel cell cooling liquid |
-
2021
- 2021-11-15 CN CN202111344990.7A patent/CN114100392A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005129384A (en) * | 2003-10-24 | 2005-05-19 | Calsonic Kansei Corp | Coolant and fuel cell cooling system using the same |
| JP2005183015A (en) * | 2003-12-16 | 2005-07-07 | Calsonic Kansei Corp | Fuel cell cooling system and coating agent used for the same |
| US8287176B1 (en) * | 2008-07-14 | 2012-10-16 | Kughn William C | Antifreeze dyeing/mixing systems and methods |
| CN103464042A (en) * | 2013-08-30 | 2013-12-25 | 蚌埠市阳光粉沫涂料有限责任公司 | Drum-type stirring device |
| JP2017097958A (en) * | 2015-11-18 | 2017-06-01 | シーシーアイ株式会社 | Fuel cell coolant container and fuel cell coolant storage method |
| CN108102616A (en) * | 2017-12-22 | 2018-06-01 | 扬州中德汽车零部件有限公司 | Low conductivity super long effective organic type fuel cell anti-freeze cooling liquid and preparation method thereof |
| CN209125996U (en) * | 2018-07-28 | 2019-07-19 | 南京英达公路养护车制造有限公司 | A kind of roller bin with manual-operated emergent device |
| CN111151182A (en) * | 2018-11-07 | 2020-05-15 | 中国科学院大学 | Method and device for driving and transporting low-conductivity liquid by using high-frequency traveling wave magnetic field |
| CN112139472A (en) * | 2020-10-17 | 2020-12-29 | 陈金发 | Device and method for rapidly preparing semi-solid metal slurry |
| CN113528096A (en) * | 2021-07-29 | 2021-10-22 | 胡叶根 | Efficient heat transfer hydrogen fuel cell cooling liquid |
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Application publication date: 20220301 |