CN113839063A - Processing method of hydrogen fuel cell radiator and hydrogen fuel cell radiator - Google Patents
Processing method of hydrogen fuel cell radiator and hydrogen fuel cell radiator Download PDFInfo
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- CN113839063A CN113839063A CN202111126197.XA CN202111126197A CN113839063A CN 113839063 A CN113839063 A CN 113839063A CN 202111126197 A CN202111126197 A CN 202111126197A CN 113839063 A CN113839063 A CN 113839063A
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- 239000000446 fuel Substances 0.000 title claims abstract description 208
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 118
- 239000001257 hydrogen Substances 0.000 title claims abstract description 118
- 238000003672 processing method Methods 0.000 title abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 131
- 238000005406 washing Methods 0.000 claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000002253 acid Substances 0.000 claims abstract description 47
- 238000002161 passivation Methods 0.000 claims abstract description 44
- 239000003513 alkali Substances 0.000 claims abstract description 43
- 239000008367 deionised water Substances 0.000 claims abstract description 43
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000005219 brazing Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000007710 freezing Methods 0.000 claims abstract description 9
- 239000000243 solution Substances 0.000 claims description 42
- 239000011259 mixed solution Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005554 pickling Methods 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 abstract description 15
- 150000002500 ions Chemical class 0.000 description 26
- 230000008569 process Effects 0.000 description 17
- 230000004907 flux Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 238000004590 computer program Methods 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005476 soldering Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 230000002528 anti-freeze Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000002242 deionisation method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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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
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a processing method of a hydrogen fuel cell radiator and the hydrogen fuel cell radiator, wherein the method comprises the following steps: sequentially carrying out acid washing, alkali washing and water washing on a fuel cell radiator core body, wherein the fuel cell radiator core body is made of a brazing flux-free material; assembling the core body of the fuel cell radiator and the radiator water chamber to obtain a hydrogen fuel cell radiator; circularly cleaning the hydrogen fuel cell radiator after water washing by adopting high-temperature deionized water; passivating the hydrogen fuel cell radiator after the circular cleaning so as to generate a passivation layer on the surface of the inside of the hydrogen fuel cell radiator, which is in contact with the anti-freezing solution of the cooling system, and reduce the ion precipitation capacity in the cooling system.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a processing method of a hydrogen fuel cell radiator and the hydrogen fuel cell radiator.
Background
With the development of hydrogen fuel automobiles, hydrogen fuel cells are also widely used as the main power of hydrogen fuel automobiles; in a cooling system of a hydrogen fuel cell, when ions harmful to a membrane electrode exist, proton exchange of the hydrogen fuel cell is affected, and therefore, the cooling system of the hydrogen fuel cell needs to be cleaned; in the related art, high-temperature deionized water is usually used for cleaning the fuel cell radiator, but only part of free impurities can be cleaned by adopting the cleaning method, and more ions are precipitated in a cooling system, so that the anti-freezing solution of the cooling system has higher conductivity, and is not beneficial to the use of the hydrogen fuel cell.
Disclosure of Invention
The embodiment of the application aims to reduce the ion precipitation capacity of a cooling system by providing a processing method of a hydrogen fuel cell radiator and the hydrogen fuel cell radiator.
The embodiment of the application provides a processing method of a hydrogen fuel cell radiator, which comprises the following steps:
sequentially carrying out acid washing, alkali washing and water washing on a fuel cell radiator core body, wherein the fuel cell radiator core body is made of a brazing flux-free material;
assembling the core body of the fuel cell radiator and the radiator water chamber to obtain a hydrogen fuel cell radiator;
circularly cleaning the hydrogen fuel cell radiator after water washing by adopting high-temperature deionized water;
passivating the hydrogen fuel cell radiator after the circular cleaning so as to generate a passivation layer on the surface, in contact with the anti-freezing solution of the cooling system, of the inside of the hydrogen fuel cell radiator.
In one embodiment, the step of sequentially performing acid washing, alkali washing and water washing on the fuel cell radiator core comprises:
pickling the fuel cell radiator core body for a first preset time according to a first preset cleaning vibration frequency;
washing the fuel cell radiator core body after acid washing according to a second preset washing vibration frequency;
performing alkaline washing on the fuel cell radiator core for a second preset time according to a third preset washing vibration frequency;
and washing the fuel cell radiator core body subjected to alkali washing according to a fourth preset washing vibration frequency.
In one embodiment, the first predetermined time period is two minutes, the acid solution for acid washing has a PH of 2, and the alkali solution for alkali washing has a PH of 10.
In an embodiment, the step of circularly cleaning the hydrogen fuel cell radiator after water washing with high-temperature deionized water includes:
and circularly cleaning the hydrogen fuel cell radiator after water washing for a third preset time according to a preset temperature, wherein the preset temperature is 85 ℃, and the third preset time is 96 hours.
In one embodiment, the conductivity of the deionized water used for the cyclic cleaning is 5 us/cm.
In one embodiment, the step of passivating the hydrogen fuel cell radiator after the cyclic cleaning comprises:
and passivating the interior of the circularly cleaned hydrogen fuel cell radiator for a fourth preset time according to a mixed solution of a preset mixing ratio, wherein the mixed solution comprises a passivation solution and deionized water, and the preset mixing ratio of the mixed solution to the deionized water is 1: 10.
In an embodiment, the fourth preset time period is 30 minutes.
In an embodiment, the step of performing the internal passivation treatment on the hydrogen fuel cell radiator after the circular cleaning for the fourth preset time by using the mixed liquid according to the preset mixing ratio further includes:
and pouring the mixed liquid after the fourth preset time is reached, and cleaning the interior of the hydrogen fuel cell radiator after the passivation treatment by adopting deionized water.
In addition, in order to achieve the purpose, the invention also provides a hydrogen fuel cell radiator, and the core body of the hydrogen fuel cell radiator is made of a brazing flux-free material.
The processing method of the hydrogen fuel cell radiator and the hydrogen fuel cell radiator provided by the embodiment of the application adopt the solder-free material to manufacture the core body of the fuel cell radiator, the core body of the fuel cell radiator is sequentially subjected to acid washing, alkali washing and water washing to wash away the soldering flux in the core body of the fuel cell radiator, after the brazing flux in the core body of the fuel cell radiator is cleaned, the core body of the fuel cell radiator and the radiator shell are assembled to obtain the hydrogen fuel cell radiator, the hydrogen fuel cell radiator after water washing is circularly cleaned by adopting high-temperature deionized water to clean free ions, and then the hydrogen fuel cell radiator after circular cleaning is passivated to generate a passivation layer on the surface of the interior of the hydrogen fuel cell radiator, which is in contact with the antifreeze solution of a cooling system, so that the ion precipitation capacity in the cooling system is reduced.
Drawings
FIG. 1 is a schematic flow diagram of a first embodiment of a method of treating a hydrogen fuel cell radiator in accordance with the present invention;
FIG. 2 is a schematic flow diagram of a second embodiment of a hydrogen fuel cell heat sink treatment method of the present invention;
FIG. 3 is a flow chart of the brazing process for the fuel cell heat sink core of the present invention;
FIG. 4 is a schematic view of a cleaning process for a fuel cell radiator core according to the present invention;
FIG. 5 is a process of passivation according to the present invention;
FIG. 6 is a schematic view of a process of cleaning a fuel cell heat sink with high temperature DI water according to the present invention;
the objects, features, and advantages of the present invention will be further explained with reference to the accompanying drawings, which are an illustration of one embodiment, and not an entirety of the invention.
Detailed Description
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
While a logical sequence is shown in the flow chart, in some cases, the steps shown or described may be performed in a different order than that shown or described herein.
As shown in fig. 1, in a first embodiment of the present application, a method of processing a hydrogen fuel cell radiator of the present application includes the steps of:
step S110, carrying out acid washing, alkali washing and water washing on a fuel cell radiator core body in sequence, wherein the fuel cell radiator core body is made of a soldering flux-free material;
step S120, assembling the core body of the fuel cell radiator and the radiator water chamber to obtain a hydrogen fuel cell radiator;
step S130, circularly cleaning the hydrogen fuel cell radiator after water washing by adopting high-temperature deionized water;
and step S140, passivating the circularly cleaned hydrogen fuel cell radiator to generate a passivation layer on the surface of the inside of the hydrogen fuel cell radiator, which is in contact with the anti-freezing solution of the cooling system.
In this embodiment, the operating characteristics of the hydrogen fuel cell require that the liquid medium in the cooling system has the characteristics of low conductivity, low ion concentration, high temperature resistance and low temperature resistance, and in the cooling system of the hydrogen fuel cell, any fluid that is in direct or indirect contact with the membrane electrode will seriously affect the proton exchange of the fuel cell if it contains ions that potentially harm the membrane electrode, resulting in a higher conductivity of the cooling liquid, and therefore, the ion precipitation capability of the cooling system of the hydrogen fuel cell needs to be reduced, and the ion precipitation capability of the cooling system of the hydrogen fuel cell is reduced, which is mainly realized by reducing the ion precipitation capability of the radiator of the fuel cell; in order to reduce the ion precipitation capacity in a cooling system and reduce the conductivity of cooling liquid, the application designs a treatment method of a hydrogen fuel cell radiator; firstly, the core body of the fuel cell radiator adopts a flux-free B-shaped pipe for assembly and brazing, so that flux residue of the fuel cell radiator is reduced fundamentally; then, passivating the core body of the fuel cell radiator and the hydrogen fuel cell radiator after a series of cleaning, and generating a passivation layer on the surface of the inside of the hydrogen fuel cell radiator, which is contacted with the anti-freezing solution of the cooling system, through passivation; the present application reduces the ion extraction capacity of the cooling system and the conductivity of the coolant by the above-described cleaning operation and passivation treatment.
In this embodiment, the core body of the fuel cell heat sink of the present application is made of a brazing flux-free material, specifically, as shown in fig. 3, fig. 3 is a brazing flow chart of the core body of the fuel cell heat sink, and the core body of the fuel cell heat sink of the present application is assembled by using a brazing flux-free B-shaped pipe and brazed by using a brazing flux; the flux is used during soldering, can effectively dissolve or destroy oxide films on surfaces of a soldering part and the solder, and can destroy the oxide films to enhance ion precipitation capacity when the flux is used for soldering, so that the radiator core body of the fuel cell needs to be cleaned.
Before cleaning, determining a cleaning sequence of the fuel cell radiator core according to actual conditions, wherein the cleaning sequence can sequentially comprise acid cleaning, alkali cleaning and water cleaning, the acid cleaning is to remove oxide scales and rusty materials on the fuel cell radiator core, and the alkali cleaning is to neutralize an acid solution used in the acid cleaning; in other scenes, the cleaning sequence of the fuel cell radiator core body can be set to be alkaline cleaning, acid cleaning and water cleaning, wherein the alkaline cleaning is firstly to remove oil stains on the fuel cell radiator core body, and then the acid cleaning is to neutralize alkaline solution used in the alkaline cleaning; different cleaning sequences are adopted, and the final cleaning effect is different.
Specifically, the fuel cell radiator core can be placed in a cleaning device, the cleaning device at least comprises three containers, namely a first container for storing an acid solution, a second container for storing an alkali solution and a third container for storing water, when the cleaning sequence of the fuel cell radiator core sequentially comprises pickling, alkali cleaning and water cleaning, the fuel cell radiator core is placed in the first container for pickling, then the fuel cell radiator core is placed in the second container for alkali cleaning, finally the fuel cell radiator core is placed in the third container for water cleaning, and the brazing flux remaining in the fuel cell radiator core is removed through the cleaning process.
Further, as shown in fig. 4, fig. 4 is a schematic diagram of a cleaning process of the fuel cell radiator core according to the present application, in order to improve the cleaning effect, after the acid cleaning, the fuel cell radiator core may be taken out from the first container and then placed in a third container for water cleaning, so as to remove a part of the acid solution on the fuel cell radiator core; after water washing, taking the fuel cell radiator core out of the third container, and then placing the fuel cell radiator core in the second container for alkali washing to neutralize the acid solution remained on the fuel cell radiator core; this application no matter is with above-mentioned arbitrary one kind washing mode, can adopt the ultrasonic wave to vibrate the washing to improve cleaning performance.
In this embodiment, after the fuel cell radiator core is washed with water, the fuel cell radiator core and the radiator water chamber are assembled to obtain the hydrogen fuel cell radiator, and the specific assembling process is not discussed herein; after the hydrogen fuel cell radiator is obtained after assembly is completed, further removing free ions on the hydrogen fuel cell radiator; specifically, the hydrogen fuel cell radiator after being washed by water is placed in a cleaning device, and high-temperature deionized water is adopted for cyclic cleaning to remove free ions on the hydrogen fuel cell radiator; as shown in fig. 6, fig. 6 is a schematic flow chart of the present invention, in which an electronic water pump is controlled to operate so that deionized water circularly and sequentially passes through an electric heater to be heated, and then the heated deionized water passes through a hydrogen fuel cell radiator to flush the hydrogen fuel cell radiator.
In the present embodiment, after the circulation purge is completed, the hydrogen fuel cell radiator is taken out from the purge device; in order to reduce the ion precipitation capacity of the cooling liquid, the hydrogen fuel cell radiator is further passivated, a passivation layer is generated on the surface, in contact with the anti-freezing liquid of the cooling system, of the interior of the hydrogen fuel cell radiator, and the ion precipitation capacity of the cooling liquid is reduced through the passivation layer; specifically, as shown in fig. 5, fig. 5 is a process of passivation according to the present application, and the present application may configure a mixed solution according to an actual situation, inject the mixed solution into the hydrogen fuel cell heat sink, and place the hydrogen fuel cell heat sink in a passivation furnace for passivation to form a passivation layer.
According to the technical scheme, the fuel cell radiator core body is made of the brazing flux-free material, the brazing flux in the fuel cell radiator core body is washed by acid, alkali and water in sequence, the brazing flux in the fuel cell radiator core body is washed, the fuel cell radiator core body and the radiator shell are assembled to obtain the hydrogen fuel cell radiator after the brazing flux in the fuel cell radiator core body is washed, the hydrogen fuel cell radiator after washing is circularly washed by high-temperature deionized water to wash free ions, and then the hydrogen fuel cell radiator after circular washing is passivated to generate a passivation layer on the surface, in contact with the anti-freezing solution of the cooling system, of the inside of the hydrogen fuel cell radiator, so that the ion precipitation capacity in the cooling system is reduced.
As shown in fig. 2, based on the first embodiment step S110, the second embodiment of the present application includes the following steps:
step S111, pickling the fuel cell radiator core body for a first preset time according to a first preset cleaning vibration frequency;
step S112, washing the fuel cell radiator core body after acid washing according to a second preset washing vibration frequency;
step S113, performing alkaline washing on the fuel cell radiator core for a second preset time according to a third preset washing vibration frequency;
and step S114, washing the fuel cell radiator core body after alkali washing according to a fourth preset washing vibration frequency.
In this embodiment, before cleaning, a cleaning sequence of the fuel cell radiator core needs to be determined according to actual conditions, and the cleaning sequence of this embodiment may sequentially include acid washing, water washing, alkali washing, and water washing; in other scenes, the cleaning sequence of the fuel cell radiator core body can be set to be alkaline cleaning, water cleaning, acid cleaning and water cleaning, different cleaning sequences are adopted, and the final cleaning effect is different.
In this embodiment, the fuel cell radiator core may be placed in a cleaning apparatus that includes at least three containers, a first container that stores an acid solution, a second container that stores an alkali solution, and a third container that stores water; when the cleaning sequence of the fuel cell radiator core sequentially comprises acid cleaning, water cleaning, alkali cleaning and water cleaning, the fuel cell radiator core is firstly placed in a first container for acid cleaning, then the fuel cell radiator core is placed in a third container for water cleaning, then the fuel cell radiator core is placed in a second container for alkali cleaning, finally the fuel cell radiator core is placed in a third container for water cleaning, and the brazing flux remaining in the fuel cell radiator core is removed through the cleaning process.
In this embodiment, the first preset cleaning vibration frequency, the second preset cleaning vibration frequency, the third preset cleaning vibration frequency, the fourth preset cleaning vibration frequency, the first preset time length and the second preset time length may be set according to actual conditions; wherein the first preset cleaning vibration frequency, the second preset cleaning vibration frequency, the third preset cleaning vibration frequency and the fourth preset cleaning vibration frequency may be the same or different; the first preset time length and the second preset time length can be the same or different; specifically, in order to improve the cleaning effect, whether cleaning is performed in the first container, the second container or the third container, a preset cleaning vibration frequency can be set to clean the fuel cell radiator core; the same preset cleaning vibration frequency can be set for cleaning in acid cleaning, alkali cleaning and water cleaning; different preset cleaning vibration frequencies can be set according to actual conditions to clean the core body of the fuel cell radiator; the cleaning time of the fuel cell radiator core body can be set, and the same cleaning time can be used for cleaning in acid cleaning, alkali cleaning and water cleaning; different cleaning time lengths can be set according to actual conditions to clean the fuel cell radiator core; in the processes of acid washing, alkali washing and water washing, the temperature of acid solution used for acid washing, alkali solution used for alkali washing and water used for water washing can be controlled, and the temperature can be controlled at normal temperature generally.
According to the technical scheme, the residual brazing flux in the core body of the fuel cell radiator is removed by controlling the technical means of carrying out acid washing, water washing, alkali washing and water washing on the core body of the fuel cell radiator in sequence under the same preset washing vibration frequency and washing time.
In the third embodiment of the present application, a first preset time period, an acid solution and an alkali solution are specifically defined, the first preset time period, a PH value of the acid solution used for pickling and a PH value of the alkali solution used for alkali washing are determined according to actual conditions, and the preset time period, the PH value of the acid solution and the PH value of the alkali solution used for pickling and alkali washing can be determined according to the model of a fuel cell radiator core, the performance of the fuel cell radiator core or the residual amount of a soldering flux in the fuel cell radiator core; the second preset time of the alkaline washing and the first preset time of the acid washing can be the same or different, and can be set according to actual conditions; in other application scenarios, when the model of the fuel cell radiator core changes, different washing durations of acid washing and alkali washing, the PH value of the acid solution and the PH value of the alkali solution may be set, for example, when the model of the fuel cell radiator core changes, the washing durations of acid washing and alkali washing may be set to three minutes, the PH value of the acid solution is 3, and the PH value of the alkali solution is 11; the cleaning time of acid cleaning can also be set to be two minutes, the cleaning time of alkali cleaning can be three minutes, the pH value of the acid solution is 3 and the pH value of the alkali solution is 11; in other application scenes, the washing duration of the water washing can be set according to the actual situation.
According to the technical scheme, the cleaning effect of the fuel cell radiator core body under the model is improved by adopting the technical scheme of specifically limiting the first preset duration of pickling, the pH value of the acid solution and the pH value of the alkali solution.
The following is a fourth embodiment of the present application, which includes, based on the first embodiment step S130:
step S131, circularly cleaning the hydrogen fuel cell radiator after water washing for a third preset time according to a preset temperature, wherein the preset temperature is 85 ℃, and the third preset time is 96 hours.
In the present embodiment, after the assembly is completed to obtain the hydrogen fuel cell radiator, further removal of ions dissociated on the hydrogen fuel cell radiator is required; specifically, the hydrogen fuel cell radiator after being washed is placed in a cleaning device, and high-temperature deionized water is adopted for cyclic cleaning to remove free ions on the hydrogen fuel cell radiator; in the cleaning device, the work of an electronic water pump is controlled to enable deionized water to circularly and sequentially pass through an electric heater for heating, and then the heated deionized water passes through a hydrogen fuel cell radiator to flush the hydrogen fuel cell radiator; specifically, the preset temperature for heating by the electric heater can be set according to actual conditions, for example, the preset temperature for heating by the electric heater can be set to 85 ℃, so as to heat the deionized water passing through the electric heater to 85 ℃; washing the hydrogen fuel cell radiator by using heated deionized water; after the washing is finished, the deionized water is conveyed to the electric heater through the electronic water pump to be heated, the heated deionized water is used for washing the hydrogen fuel cell radiator, and the third preset time is circularly washed through the circular washing operation, for example, the third preset time can be set to be 96 hours according to actual conditions, and after the circular washing is carried out for 96 hours, the washing effect is good.
In this embodiment, before or after the electric heater of the cleaning apparatus, a temperature acquisition device may be disposed, where the temperature acquisition device is configured to acquire a temperature of deionized water to detect whether the temperature of the deionized water reaches a preset temperature; when the deionization temperature reaches the preset temperature, circularly cleaning the hydrogen fuel cell radiator by using high-temperature deionized water; when the temperature of the deionized water does not reach the preset temperature, the deionized water needs to be heated to the preset temperature, and then the deionized water reaching the preset temperature is conveyed to a hydrogen fuel cell radiator to carry out high-temperature deionized water circulating cleaning; when the washed hydrogen fuel cell radiator is placed into the cleaning device and the cleaning device is started, a timer of the cleaning device can be used for timing so as to finish the third preset time for circularly cleaning the hydrogen fuel cell radiator.
According to the technical scheme, the technical means of circularly cleaning the hydrogen fuel cell radiator after water washing for the preset time according to the preset temperature is adopted, so that impurities remained on the surface of the hydrogen fuel cell radiator are removed.
The fifth embodiment of the present application specifically limits the conductivity of the deionized water used for the circulation cleaning, specifically, the conductivity of the deionized water used for the circulation cleaning can be set to be 5us/cm according to actual conditions, the hydrogen fuel cell radiator is placed in the cleaning device, and the deionized water is used for the circulation cleaning to be 5us/cm, so that the impurities remained on the surface of the hydrogen fuel cell radiator are removed.
The following is a sixth embodiment of the present application, which includes, based on the first embodiment step S140:
step S141, passivating the interior of the circularly cleaned hydrogen fuel cell radiator for a fourth preset time according to a mixed solution of a preset mixing ratio, wherein the mixed solution comprises a passivation solution and deionized water, and the preset mixing ratio of the mixed solution to the deionized water is 1: 10.
In the present embodiment, after the circulation purge is completed, the hydrogen fuel cell radiator is taken out from the purge device; in order to reduce the ion precipitation capacity of the cooling liquid, the hydrogen fuel cell radiator is further passivated, a passivation layer is generated on the surface, in contact with the anti-freezing liquid of the cooling system, of the interior of the hydrogen fuel cell radiator, and the ion precipitation capacity of the cooling liquid is reduced through the passivation layer; specifically, as shown in fig. 5, fig. 5 is a process of passivation according to the present application, where a mixed solution is configured according to an actual situation, the mixed solution is injected into a hydrogen fuel cell radiator, and then the hydrogen fuel cell radiator is placed in a passivation furnace for a fourth preset time period of passivation to form a passivation layer; the mixed solution comprises passivation solution and deionized water; the preset mixing ratio of the mixed solution can be set according to actual conditions, for example, the preset mixing ratio of the passivation solution and the deionized water in the mixed solution can be set to be 1: 10; the fourth preset time can be set according to actual conditions, and the fourth preset time of the passivation treatment corresponding to the hydrogen fuel cell radiators of different models is different.
According to the technical scheme, the passivation layer is generated on the surface of the inside of the hydrogen fuel cell radiator, which is in contact with the antifreeze solution of the cooling system, by the technical means of passivating the inside of the hydrogen fuel cell radiator after the circular cleaning for the fourth preset time length by the mixed solution according to the preset mixing proportion.
The seventh embodiment of this application specifically prescribes a limit to the fourth of passivation process for a specified time, and is concrete, can set up the fourth of passivation process according to actual conditions predetermines for 30 minutes for a specified time, will the hydrogen fuel cell radiator is placed in the passivation stove, can use the time of the timer of passivation stove self-bring to the time is accomplished and is predetermine for the fourth of the inside passivation process of hydrogen fuel cell radiator, and can adopt other timers to time, generates the passivation layer with the surface of the contact of the antifreeze solution at the inside of hydrogen fuel cell radiator and cooling system through passivation process, thereby has reduced ion precipitation ability in the cooling system.
The following is an eighth embodiment of the present application, which includes, after step S141 based on the sixth embodiment:
and S250, pouring the mixed liquid out after the fourth preset time is reached, and cleaning the interior of the hydrogen fuel cell radiator after passivation treatment by using deionized water.
In the present embodiment, after the passivation process for the fourth preset time period, the hydrogen fuel cell radiator may be taken out of the passivation furnace after waiting for the temperature of the passivation furnace to decrease; and after the hydrogen fuel cell radiator is taken out, pouring out the mixed liquid in the hydrogen fuel cell radiator, and cleaning the passivated inside of the hydrogen fuel cell radiator by using deionized water so as to remove the residual free ions on the inner wall of the hydrogen fuel cell radiator.
According to the technical scheme, after passivation treatment, the technical means of deionization cleaning is adopted for the interior of the hydrogen fuel cell radiator, so that the ion precipitation capacity in a cooling system and the conductivity of the cooling liquid are reduced.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A method of handling a hydrogen fuel cell radiator, the method comprising:
sequentially carrying out acid washing, alkali washing and water washing on a fuel cell radiator core body, wherein the fuel cell radiator core body is made of a brazing flux-free material;
assembling the core body of the fuel cell radiator and the radiator water chamber to obtain a hydrogen fuel cell radiator;
circularly cleaning the hydrogen fuel cell radiator after water washing by adopting high-temperature deionized water;
passivating the hydrogen fuel cell radiator after the circular cleaning so as to generate a passivation layer on the surface, in contact with the anti-freezing solution of the cooling system, of the inside of the hydrogen fuel cell radiator.
2. The method of claim 1, wherein the steps of sequentially subjecting the fuel cell radiator core to acid washing, alkali washing, and water washing comprise:
pickling the fuel cell radiator core body for a first preset time according to a first preset cleaning vibration frequency;
washing the fuel cell radiator core body after acid washing according to a second preset washing vibration frequency;
performing alkaline washing on the fuel cell radiator core for a second preset time according to a third preset washing vibration frequency;
and washing the fuel cell radiator core body subjected to alkali washing according to a fourth preset washing vibration frequency.
3. The method according to claim 2, wherein the first predetermined period of time is two minutes, the acid solution used for the acid washing has a PH of 2, and the alkali solution used for the alkali washing has a PH of 10.
4. The method of claim 1, wherein the step of cyclically cleaning the water-washed hydrogen fuel cell heat sink with high temperature deionized water comprises:
and circularly cleaning the hydrogen fuel cell radiator after water washing for a third preset time according to a preset temperature, wherein the preset temperature is 85 ℃, and the third preset time is 96 hours.
5. The method of claim 4, wherein the deionized water used for the cyclic cleaning has a conductivity of 5 us/cm.
6. The method of claim 1, wherein the step of passivating the hydrogen fuel cell heat sink after the cycle clean comprises:
and passivating the interior of the circularly cleaned hydrogen fuel cell radiator for a fourth preset time according to a mixed solution of a preset mixing ratio, wherein the mixed solution comprises a passivation solution and deionized water, and the preset mixing ratio of the mixed solution to the deionized water is 1: 10.
7. The method of claim 6, wherein the fourth predetermined period of time is 30 minutes.
8. The method of claim 6, wherein the step of subjecting the internally passivated portion of the hydrogen fuel cell heat sink after the recycle cleaning to the mixed liquor at the predetermined mixing ratio for a fourth predetermined period of time is further followed by the step of:
and pouring the mixed liquid after the fourth preset time is reached, and cleaning the interior of the hydrogen fuel cell radiator after the passivation treatment by adopting deionized water.
9. A hydrogen fuel cell heat sink made by the method of claims 1-8, wherein the fuel cell heat sink core is made of a flux-free material.
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Application publication date: 20211224 |