CN114597445A - Comprehensive heat management method for hydrogen energy storage system - Google Patents
Comprehensive heat management method for hydrogen energy storage system Download PDFInfo
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- CN114597445A CN114597445A CN202210171321.2A CN202210171321A CN114597445A CN 114597445 A CN114597445 A CN 114597445A CN 202210171321 A CN202210171321 A CN 202210171321A CN 114597445 A CN114597445 A CN 114597445A
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- energy storage
- power generation
- storage system
- generation unit
- hydrogen production
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 239000001257 hydrogen Substances 0.000 title claims abstract description 82
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 82
- 238000004146 energy storage Methods 0.000 title claims abstract description 44
- 238000007726 management method Methods 0.000 title claims abstract description 44
- 238000010248 power generation Methods 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 claims abstract description 43
- 230000017525 heat dissipation Effects 0.000 claims abstract description 24
- 239000000446 fuel Substances 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000003792 electrolyte Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000005868 electrolysis reaction Methods 0.000 abstract description 6
- 208000028659 discharge Diseases 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Classifications
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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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- 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- 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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
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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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention discloses a comprehensive heat management method of a hydrogen energy storage system, aiming at the situation that the heat dissipation systems of a fuel cell power generation unit and an electrolysis hydrogen production unit in the existing hydrogen energy storage system have similar functions and are repeatedly constructed, the comprehensive heat management system is adopted, and a set of heat dissipation system is used for comprehensively controlling the temperature of a fuel cell power generation unit stack and an electrolysis hydrogen production unit electrolytic tank in the hydrogen energy storage system, so that a set of heat dissipation system is saved; the method mainly comprises the steps of utilizing the characteristic that two links of hydrogen production and power generation in the hydrogen energy storage system work at different times, monitoring the working states of a fuel cell power generation unit and a hydrogen production unit of the energy storage system in real time, and controlling the temperatures of the two units by switching the working states of a cooling pump and using a set of heat dissipation system in a time-sharing manner, so that the effects of saving hardware investment and reducing the complexity of the system are achieved.
Description
Technical Field
The invention belongs to the technical field of hydrogen energy storage, and particularly relates to a comprehensive heat management method of a hydrogen energy storage system.
Background
The hydrogen energy storage system is a power system energy storage system. The power output of renewable energy power generation facilities such as wind power generation facilities and photovoltaic power generation facilities has the characteristics of intermittency, volatility and the like, and the output cannot be adjusted along with the load, so that the renewable energy power generation facilities are difficult to directly use. In order to stabilize renewable energy, an energy storage device is generally used to adjust its intermittency and volatility so that it can be stably connected to the internet. The hydrogen energy storage system has the characteristics of large stored electric quantity, no self-discharge in the storage process and the like, and is suitable for storing electric energy for a long time and in large capacity.
The hydrogen energy storage system is composed of a fuel cell power generation unit, a hydrogen storage unit, an electrolysis hydrogen production unit and other systems, the power generation process and the electrolysis hydrogen production process are both heating processes, and heat dissipation systems are required to be arranged to control the temperature of the working process. The work of the energy storage system is divided into an electric energy storage stage and a discharge stage, the electrolytic hydrogen production unit works in the electric energy storage stage, the electric energy is converted into the chemical energy of the hydrogen and is stored in the hydrogen storage unit; in the discharging stage, the fuel cell power generation unit works to convert the chemical energy in the hydrogen gas into electric energy again. The two processes of electric energy storage and discharge cannot occur simultaneously in the working process, the working temperatures of the power generation unit and the hydrogen production unit are close, two sets of heat dissipation systems with similar functions are respectively arranged, so that the waste on hardware and the cost are increased, and therefore, the comprehensive heat management method of the hydrogen energy storage system is provided for solving the problems.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a comprehensive heat management method for a hydrogen energy storage system, which solves the problem of hardware resource waste caused by the fact that a power generation unit and a hydrogen production unit of the traditional hydrogen energy storage system are respectively provided with a set of heat dissipation system.
In order to solve the technical problems, the invention provides the following technical scheme: a comprehensive thermal management method for a hydrogen energy storage system comprises the following steps:
and S1, connecting corresponding pipelines, the cooling pump 1 and the hot side of the heat exchanger 1 to the stack cooling liquid interface of the fuel cell power generation unit to establish a battery power generation unit cooling loop.
And S2, connecting corresponding pipelines, the cooling pump 2 and the hot side of the heat exchanger 2 to the electrolyte interface of the electrolytic cell of the electrolytic hydrogen production unit to establish a cooling loop of the electrolytic hydrogen production unit.
S3, connecting the cold sides of the heat exchanger 1 and the heat exchanger 2 by using a pipeline, and arranging a cooling pump 3 and a heat dissipation system in the loop to establish an integrated heat management system.
And S4, monitoring the states of the power generation unit and the hydrogen production unit in the hydrogen energy storage system by the controller, controlling the temperature of the power generation unit by the heat dissipation system when the power generation unit works, and controlling the temperature of the hydrogen production unit by the heat dissipation system when the hydrogen production unit works.
In a preferred embodiment of the present invention, in the steps S1 and S2, the heat exchanger is a plate-type, tube-type or any other type of liquid-liquid heat exchanger.
In a preferred embodiment of the present invention, in step S3, the heat dissipation system is an air-cooled heat sink or a cooling tower.
As a preferred embodiment of the present invention, in step S4, the thermal management method controls the temperature of the power generation unit or the hydrogen production unit by adjusting the rotation speeds of the water pump 1, the water pump 2, the water pump 3, the cooling system fan, and the like.
In a preferred embodiment of the present invention, the main heating element of the fuel cell power generation unit in step S1 is a stack, and the main heating element of the hydrogen electrolysis production unit in step S2 is an electrolysis cell.
As a preferable aspect of the present invention, in step S4, when the power generation unit is operated, the operation of the cooling pump 1 of the power generation unit and the operation of the cooling pump 3 of the integrated thermal management system are controlled.
And when the hydrogen production unit works, the working of the cooling pump 2 of the hydrogen production unit and the working of the cooling pump 3 of the comprehensive thermal management system are controlled.
Compared with the prior art, the invention can achieve the following beneficial effects:
according to the invention, by adopting the comprehensive heat management system and the comprehensive heat management method, the temperature of the hydrogen production unit is controlled by using the comprehensive heat management system in the electric energy storage stage of the hydrogen energy storage system, and the temperature of the fuel cell power generation unit is controlled by using the comprehensive heat management system in the discharge stage.
Drawings
FIG. 1 is a schematic diagram of a thermal management system architecture of a conventional hydrogen energy storage system;
fig. 2 is a schematic diagram of a thermal management system of the hydrogen energy storage system according to the present invention.
Detailed Description
Technical means for implementing the present invention; authoring features; the purpose served by the disclosure is to provide a thorough understanding of the invention, and is to be construed as being a limitation on the scope of the invention as defined by the appended claims. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples, unless otherwise specified, are conventional methods, materials used in the following examples; reagents and the like are commercially available unless otherwise specified.
Examples
Example 1
The comprehensive thermal management method for the hydrogen energy storage system shown in fig. 2 comprises the following steps:
s1, establishing a cooling loop of the fuel cell power generation unit: and corresponding pipelines, a cooling pump 1 and the hot side of the heat exchanger 1 are connected to a cooling liquid interface of the electric pile to form a cooling loop of the fuel cell power generation unit.
S2, establishing a cooling loop of the electrolytic hydrogen production unit: corresponding pipelines, the cooling pump 2 and the hot side of the heat exchanger 2 are connected to an electrolyte interface of the electrolytic cell to form a cooling loop of the electrolytic hydrogen production unit.
S3, establishing the comprehensive thermal management system: the cold sides of the heat exchanger 1, 2 are connected by piping and a cooling pump 3 and a heat sink system are provided in the circuit.
S4, the implementation of the comprehensive heat management method comprises the following steps:
the state of a power generation unit and a hydrogen production unit in the hydrogen energy storage system is monitored through a controller, when the power generation unit works, a cooling pump 1 of the power generation unit is controlled to work, a cooling pump 3 of the comprehensive heat management system works, and the temperature of the power generation unit is controlled through a heat dissipation system;
when the hydrogen production unit works, the cooling pump 2 of the hydrogen production unit is controlled to work, the cooling pump 3 of the comprehensive heat management system works, and the temperature of the hydrogen production unit is controlled through the heat dissipation system.
Example 2
A comprehensive thermal management method for a hydrogen energy storage system comprises the following steps:
s1, establishing a cooling loop of the fuel cell power generation unit: the main heating element of the fuel cell power generation unit is the electric pile, and the invention cancels a separate fuel cell heat dissipation system and connects the heat dissipation of the fuel cell to the comprehensive heat management system through a series of pipelines. And the electric pile cooling liquid outlet is connected to the cooling pump 1 and the hot side inlet of the heat exchanger 1 through a pipeline, and returns to the electric pile cooling liquid inlet from the hot side outlet of the heat exchanger 1 to form a fuel cell power generation unit cooling loop.
S2, establishing a cooling loop of the electrolytic hydrogen production unit: the main heating element of the electrolytic hydrogen production unit is an electrolytic bath, and the invention cancels an independent hydrogen production unit heat dissipation system and connects the heat dissipation of the electrolytic bath to the comprehensive heat management system through a series of pipelines. The electrolytic cell electrolyte outlet is connected to the cooling pump 2 and the hot side inlet of the heat exchanger 2 through a pipeline, and the hot side outlet of the heat exchanger 2 is connected to the electrolytic cell electrolyte inlet to form an electrolytic hydrogen production unit cooling loop.
S3, establishing the comprehensive thermal management system: the cold sides of the heat exchanger 1, 2 are connected using pipes and a cooling pump 3 and a heat sink system are arranged in the circuit.
S4, implementation of the comprehensive thermal management method: and monitoring the states of the power generation unit and the hydrogen production unit in the hydrogen energy storage system through a controller and providing corresponding control strategies. When a certain photovoltaic power station is in a power consumption peak at night, no sunlight can generate electricity, and at the moment, the electricity is generated by the hydrogen energy storage system and supplied to the power grid. In the power generation process of the hydrogen energy storage system, the optimal working temperature of the fuel cell power generation unit pile is 75 ℃ of inlet temperature, the comprehensive heat management system controls the rotating speed of the heat dissipation system 3 and the water pumps 1 and 3, and the inlet temperature of the pile is adjusted to be 75 ℃; in the time interval with the strongest sunlight in the daytime, the electricity load is smaller than the electricity generation amount of the photovoltaic power station, and in order to reduce the light abandon, a hydrogen energy storage system is started to electrolyze to produce hydrogen and store electric energy. In the hydrogen energy storage system, the optimal working temperature of the electrolytic bath of the hydrogen production unit is 70 ℃ of the inlet electrolyte temperature, the controller controls the cooling pump 2 of the hydrogen production unit to work, the cooling pump 3 of the comprehensive heat management system works, and the inlet temperature of the electrolyte of the hydrogen production unit is controlled to be 70 ℃ through the heat dissipation system.
According to the invention, by adopting the comprehensive heat management system and the comprehensive heat management method, the temperature of the hydrogen production unit is controlled by using the comprehensive heat management system in the electric energy storage stage of the hydrogen energy storage system; during the discharge phase, the temperature of the fuel cell power generation unit is controlled using an integrated thermal management system. By adopting the method, the temperature of the two units can be controlled by one set of heat dissipation system, the hardware investment is saved, and the system complexity is reduced.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature is "above" the second feature; "above" and "above" include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature is "below" the second feature; "below" and "beneath" include the first feature being directly beneath and obliquely below the second feature, or merely indicating that the first feature is at a lesser level than the second feature.
The foregoing shows and describes the general principles of the present invention; the main features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The comprehensive thermal management method of the hydrogen energy storage system is characterized by comprising the following steps:
s1, connecting corresponding pipelines, a cooling pump 1 and the hot side of a heat exchanger 1 to a galvanic pile cooling liquid interface of the fuel cell power generation unit to establish a battery power generation unit cooling loop;
s2, connecting corresponding pipelines, the cooling pump 2 and the hot side of the heat exchanger 2 to the electrolyte interface of the electrolytic cell of the electrolytic hydrogen production unit to establish a cooling loop of the electrolytic hydrogen production unit;
s3, connecting the cold sides of the heat exchanger 1 and the heat exchanger 2 by using a pipeline, and arranging a cooling pump 3 and a heat dissipation system in a loop to establish an integrated heat management system;
and S4, monitoring the states of the power generation unit and the hydrogen production unit in the hydrogen energy storage system by the controller, controlling the temperature of the power generation unit by the heat dissipation system when the power generation unit works, and controlling the temperature of the hydrogen production unit by the heat dissipation system when the hydrogen production unit works.
2. The integrated thermal management method for the hydrogen energy storage system according to claim 1, characterized in that: in the steps S1 and S2, the heat exchanger is a plate-type, tube-type or any other liquid-liquid heat exchanger.
3. The integrated thermal management method for the hydrogen energy storage system according to claim 1, characterized in that: in step S3, the heat dissipation system may be an air-cooled heat sink or a cooling tower.
4. The integrated thermal management method for the hydrogen energy storage system according to claim 1, characterized in that: in step S4, the heat management method controls the temperature of the power generation unit or the hydrogen production unit by adjusting the rotation speed of the water pump 1, the water pump 2, the water pump 3, the rotation speed of the cooling system fan, and the like.
5. The integrated thermal management method for the hydrogen energy storage system according to claim 1, characterized in that: the main heating element of the fuel cell power generation unit in the step S1 is a galvanic pile, and the main heating element of the electrolytic hydrogen production unit in the step S2 is an electrolytic cell.
6. The integrated thermal management method for the hydrogen energy storage system according to claim 1, characterized in that: in step S4, when the power generation unit is operating, the cooling pump 1 of the power generation unit and the cooling pump 3 of the integrated thermal management system are controlled to operate;
and when the hydrogen production unit works, the working of the cooling pump 2 of the hydrogen production unit and the working of the cooling pump 3 of the comprehensive thermal management system are controlled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210171321.2A CN114597445B (en) | 2022-02-24 | 2022-02-24 | Comprehensive thermal management method for hydrogen energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210171321.2A CN114597445B (en) | 2022-02-24 | 2022-02-24 | Comprehensive thermal management method for hydrogen energy storage system |
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| CN114597445A true CN114597445A (en) | 2022-06-07 |
| CN114597445B CN114597445B (en) | 2024-01-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130120908A (en) * | 2012-04-26 | 2013-11-05 | 지에스칼텍스 주식회사 | Fuel cell system for easy heat emission |
| CN106571478A (en) * | 2016-07-18 | 2017-04-19 | 全球能源互联网研究院 | Thermal control method in hydrogen energy storage system, and control system thereof |
| CN109687002A (en) * | 2018-11-13 | 2019-04-26 | 中广核研究院有限公司 | A kind of distributed triple-generation system |
| CN111370804A (en) * | 2020-02-13 | 2020-07-03 | 江苏大学 | Electricity-electricity mixed fuel cell automobile water heat management system and control method thereof |
| CN114068986A (en) * | 2021-11-09 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Solid alloy hydrogen storage and multi-stack fuel cell thermal management system |
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2022
- 2022-02-24 CN CN202210171321.2A patent/CN114597445B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130120908A (en) * | 2012-04-26 | 2013-11-05 | 지에스칼텍스 주식회사 | Fuel cell system for easy heat emission |
| CN106571478A (en) * | 2016-07-18 | 2017-04-19 | 全球能源互联网研究院 | Thermal control method in hydrogen energy storage system, and control system thereof |
| CN109687002A (en) * | 2018-11-13 | 2019-04-26 | 中广核研究院有限公司 | A kind of distributed triple-generation system |
| CN111370804A (en) * | 2020-02-13 | 2020-07-03 | 江苏大学 | Electricity-electricity mixed fuel cell automobile water heat management system and control method thereof |
| CN114068986A (en) * | 2021-11-09 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Solid alloy hydrogen storage and multi-stack fuel cell thermal management system |
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