CN119208657A - A water heat management system, method and fuel cell system - Google Patents
A water heat management system, method and fuel cell system Download PDFInfo
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- CN119208657A CN119208657A CN202411332148.5A CN202411332148A CN119208657A CN 119208657 A CN119208657 A CN 119208657A CN 202411332148 A CN202411332148 A CN 202411332148A CN 119208657 A CN119208657 A CN 119208657A
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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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04052—Storage of heat in the fuel cell system
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04268—Heating of fuel cells during the start-up of the fuel cells
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
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- 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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Abstract
本发明公开一种水热管理系统、方法及燃料电池系统。所述水热管理系统用于燃料电池系统的热量管理，所述水热管理系统包括：固态储氢模块，其配置成所述燃料电池系统的供氢源，以能够吸收热量释放氢气；相变储热模块，其配置为能够储存所述燃料电池系统运行产生的部分热量；和水热循环回路，其配置为：能够将所述燃料电池系统运行产生的热量传递至所述固态储氢模块和所述相变储热模块，以及能够将所述相变储热模块储存的热量传递至所述固态储氢模块。本发明提供的一种水热管理系统，可降低散热成本、减小散热功率和运行噪音，提升热量利用率。
The present invention discloses a water thermal management system, method and fuel cell system. The water thermal management system is used for heat management of a fuel cell system, and the water thermal management system includes: a solid-state hydrogen storage module, which is configured as a hydrogen supply source for the fuel cell system so as to absorb heat and release hydrogen; a phase change heat storage module, which is configured to store part of the heat generated by the operation of the fuel cell system; and a water thermal circulation loop, which is configured to: transfer the heat generated by the operation of the fuel cell system to the solid-state hydrogen storage module and the phase change heat storage module, and transfer the heat stored in the phase change heat storage module to the solid-state hydrogen storage module. A water thermal management system provided by the present invention can reduce heat dissipation costs, reduce heat dissipation power and operating noise, and improve heat utilization.
Description
Technical Field
The present invention relates to the field of fuel cell technologies, and in particular, to a water thermal management system, a water thermal management method, and a fuel cell system.
Background
A hydrogen fuel cell is a device in which hydrogen and oxygen chemically react on an exchange membrane to generate electric power. The conventional heat dissipation process of the hydrogen fuel cell is shown in fig. 1, and the heat generated during the operation of the hydrogen fuel cell system is relatively large due to the characteristics of the hydrogen fuel cell system, but the exhaust temperature is much lower than that of the conventional internal combustion engine, so that most of the heat generated during the operation of the hydrogen fuel cell needs to be transferred out through a cooling liquid combined with a heat dissipation module such as a radiator and a fan. Because of the large heat dissipation capacity, a radiator and a fan with large heat dissipation power are needed to be adopted for implementation. When the power generated by the hydrogen fuel cell increases, the heat generation power thereof increases, so that the heat dissipation power of the radiator and the fan of the hydrogen fuel cell further increases, a plurality of radiators and fans are often required to be provided, resulting in an increase in heat dissipation cost, an increase in the operation noise of the heat dissipation member, and a low heat utilization rate.
Based on this, it is necessary to propose a technical solution to overcome the drawbacks of the prior art.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a water heat management system, a water heat management method and a fuel cell system, which can reduce heat dissipation cost, heat dissipation power and operation noise and improve heat utilization rate.
The invention is realized by the following technical scheme that the water heat management system is used for heat management of a fuel cell system and comprises:
A solid state hydrogen storage module configured as a hydrogen supply source for the fuel cell system to be able to absorb heat to release hydrogen;
a phase change heat storage module configured to store a portion of heat generated by operation of the fuel cell system, and
And the hydrothermal circulation loop is configured to be capable of transferring heat generated by the operation of the fuel cell system to the solid-state hydrogen storage module and the phase-change heat storage module and transferring heat stored by the phase-change heat storage module to the solid-state hydrogen storage module.
As a further improved technical solution, the hydrothermal management system comprises a heat exchanger, and the hydrothermal circulation loop comprises a heat dissipation loop and a heat absorption loop which are subjected to heat exchange in the heat exchanger, wherein the heat dissipation loop is used for transferring heat of the fuel cell system to the heat exchanger, and the heat absorption loop is used for transferring heat of the heat exchanger to the solid-state hydrogen storage module and the phase change heat storage module.
As a further improved technical scheme, the heat exchanger is a plate heat exchanger, the heat dissipation loop and the heat absorption loop are in heat conduction connection, and the heat dissipation loop is not communicated with liquid circulating in the heat absorption loop.
As a further improved solution, the solid-state hydrogen storage module and the phase-change heat storage module are arranged in parallel, and the hydrothermal circulation loop comprises a controllable valve configured to distribute heat transferred to the solid-state hydrogen storage module and to the phase-change heat storage module.
As a further improved technical scheme, the controllable valve is a three-way valve, and two outlets of the three-way valve are respectively connected with a hydrothermal pipeline flowing through the solid-state hydrogen storage module and the phase-change heat storage module.
As a further improved technical scheme, the heat dissipation circuit is provided with a heat dissipation module, and the heat dissipation module comprises a radiator and a fan.
As a further improved technical scheme, the heat dissipation loop is provided with a first water pump, and the heat absorption loop is provided with a second water pump.
The invention also discloses a water heat management method for the water heat management system, which comprises the following steps:
When the fuel cell system operates under a low-load working condition, controlling the hydrothermal circulation loop to transfer heat of the fuel cell system to the solid-state hydrogen storage module, and controlling the hydrothermal circulation loop not to transfer heat to the phase-change heat storage module;
And when the fuel cell system operates under a high-load working condition, controlling the hydrothermal circulation loop to transfer heat of the fuel cell system to the solid-state hydrogen storage module and the phase-change heat storage module.
As a further improved technical scheme, the water thermal management method comprises the step of controlling the hydrothermal circulation loop to transfer heat stored by the phase change heat storage module to the solid-state hydrogen storage module when the fuel cell system is cold started.
The present invention is also realized by a fuel cell system comprising a hydrothermal management system as described above.
The water thermal management system comprises a solid-state hydrogen storage module, a phase-change heat storage module and a hydrothermal circulation loop, wherein the solid-state hydrogen storage module is configured to be a hydrogen supply source of the fuel cell system and can absorb heat to release hydrogen, the phase-change heat storage module is configured to be capable of storing part of heat generated by operation of the fuel cell system, the hydrothermal circulation loop is configured to be capable of transmitting the heat generated by operation of the fuel cell system to the solid-state hydrogen storage module and the phase-change heat storage module and transmitting the heat stored by the phase-change heat storage module to the solid-state hydrogen storage module, so that the heat generated by operation of the fuel cell system can be transmitted to the solid-state hydrogen storage module to be utilized and transmitted to the phase-change heat storage module to be stored, the heat utilization rate is improved, and the heat dissipation power and the operation noise of a heat dissipation part are reduced.
Drawings
FIG. 1 is a schematic diagram of the connection of a prior art hydrothermal management system.
FIG. 2 is a schematic diagram illustrating the connection of one embodiment of the hydrothermal management system of the present invention.
Fig. 3 is a schematic diagram of the operation of the hydrothermal management system under low load operation of the fuel cell system.
Fig. 4 is a schematic diagram of the operation of the hydrothermal management system under high load operation conditions of the fuel cell system.
Fig. 5 is a schematic diagram of the operation state of the water thermal management system in the cold start state of the fuel cell system.
The reference numerals are as follows, 1-fuel cell system, 2, first water pump, 3-heat dissipation module, 4-heat exchanger, 5-second water pump, 6-solid hydrogen storage module, 7-phase change heat storage module, 8-controllable valve, 10-heat dissipation loop, 20-heat absorption loop.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 2, the present invention provides a water thermal management system and a water thermal management method. The water thermal management system is used for heat management of the fuel cell system 1, and comprises a solid-state hydrogen storage module 6, a phase-change heat storage module 7 and a hydrothermal circulation loop. The solid-state hydrogen storage module 6 is configured as a hydrogen supply source of the fuel cell system 1 to be able to absorb heat and release hydrogen, the phase-change heat storage module 7 is configured to be able to store part of the heat generated by the operation of the fuel cell system 1, the hydrothermal circulation loop is used for transferring the heat between different components, and in particular, is configured to be able to transfer the heat generated by the operation of the fuel cell system 1 to the solid-state hydrogen storage module 6 and the phase-change heat storage module 7, and to transfer the heat stored by the phase-change heat storage module 7 to the solid-state hydrogen storage module 6.
The water heat management system provided by the invention enables heat generated by the operation of the fuel cell system 1 to be transferred to the solid-state hydrogen storage module 6 for use, so that the solid-state hydrogen storage module 6 absorbs heat to release hydrogen to supply hydrogen to the fuel cell system 1, and excessive heat generated by the operation of the fuel cell system 1 can be transferred to the phase-change heat storage module 7 for storage, so that the stored heat can be transferred to the solid-state hydrogen storage module 6 for use when the fuel cell system 1 is cold started or under other heat shortage conditions. Thus, not only the heat radiation power and the operation noise of the heat radiation component are reduced, and the heat radiation cost is reduced, but also the heat generated by the fuel cell system 1 is effectively utilized, and the heat utilization rate is improved.
The invention adopts the solid-state hydrogen storage module 6 to supply hydrogen to the fuel cell system 1, in one embodiment, the solid-state hydrogen storage module 6 can replace the current mainstream hydrogen cylinder hydrogen supply scheme, in another embodiment, the solid-state hydrogen storage module 6 and the hydrogen cylinder can be simultaneously provided, and one of them can be used as a standby hydrogen supply source. For the scheme of simultaneously providing the solid hydrogen storage module 6 and the hydrogen cylinders as hydrogen supply sources, the capacity of the hydrogen cylinders can be reduced as compared to the currently mainstream single hydrogen cylinder hydrogen supply scheme. Because of the self-characteristics of the solid-state hydrogen storage material, the solid-state hydrogen storage material needs to absorb heat to reach a certain temperature to release hydrogen, and the heat can be just provided by the fuel cell system 1, and because a part of heat generated by the operation of the fuel cell system 1 is utilized by the solid-state hydrogen storage module 6, the heat needing to be emitted by the radiator and the fan is relatively reduced, and the heat-radiating power requirements of the radiator and the fan are reduced.
The solid-state hydrogen storage technology realizes the storage of hydrogen by utilizing the reaction of hydrogen and a solid-state hydrogen storage material, and has the advantages of large hydrogen storage volume density, easy operation, convenient transportation, low cost, good safety, good reversible circularity and the like compared with other hydrogen storage modes. The solid hydrogen storage material used in the solid hydrogen storage module 6 can be obtained from existing materials, such as carbon materials, e.g., high surface area activated carbon, carbon fiber, nano-graphite, graphene, etc., salts, e.g., silicate, aluminosilicate, etc., alloys, e.g., mg 2Ni,LaNi5, etc. Among them, the hydrogen storage of alloy materials, namely, the hydrogen storage of metal hydrides is the most promising and fast-developing solid-state hydrogen storage mode at present. The invention is not limited to the specific kind of solid hydrogen storage material, and those skilled in the art will choose according to the needs. Different solid state hydrogen storage materials have different temperature conditions for the adsorption and release of hydrogen, and in some embodiments of the present invention, the solid state hydrogen storage materials are preferably materials that optimally adsorb hydrogen at a temperature of about 0 ℃ and below, and optimally release hydrogen at a temperature of above 50 ℃, so as to better accommodate the operating temperature range of the fuel cell system 1.
When the ambient temperature is low and the fuel cell system 1 needs to be cold started, the solid hydrogen storage module 6 cannot release hydrogen, and the fuel cell system 1 cannot be started to provide heat, so an external heating component is required to raise the temperature of the solid hydrogen storage module 6. According to the invention, the phase-change heat storage module 7 is adopted to store a part of heat when the fuel cell system 1 is in operation, so that the heat dissipation power requirements of a radiator and a fan can be reduced, the heat utilization rate is improved, and when cold start is required, the stored heat can be transferred to the solid-state hydrogen storage module 6 through a hydrothermal circulation loop to maintain a certain temperature, and the cold start time can be shortened, and the electricity consumption generated by external electric heating can be reduced.
The phase-change heat storage technology is to utilize the phase-change material to absorb or release heat to realize energy storage, and has the characteristics of large heat storage amount per unit mass, small temperature fluctuation, good chemical stability, good safety and the like. phase-change heat storage types mainly comprise solid-liquid phase change, liquid-gas phase change and solid-gas phase change. is a phase change heat storage type with the most practical application value, in which a substance is converted from a solid state to a liquid state, such as paraffin, fatty acid and the like, and the change is accompanied by a great amount of latent heat absorption or release, so that the solid-liquid phase change heat storage has wide application in the aspects of temperature regulation and energy storage, liquid-gas phase change relates to a process of converting the substance from the liquid state to the gas state, the phase change heat storage type has a large latent heat storage capacity in theory, but has relatively complex operation conditions and equipment requirements and relatively few practical applications, solid-gas phase change is a process of converting the substance directly from the solid state to the gas state, and the phase change heat storage type also has relatively large theoretical latent heat storage capacity, but has relatively few practical applications at present because of the complexity of operation conditions and equipment requirements. The invention is not limited by the specific type of solid hydrogen storage material, and those skilled in the art will choose to do so as to be suitable.
With continued reference to fig. 2, in the present embodiment, the hydrothermal management system includes a heat exchanger 4, and the hydrothermal circulation loop includes a heat dissipation loop 10 and a heat absorption loop 20 that exchange heat in the heat exchanger 4, where the heat dissipation loop 10 is used to transfer heat of the fuel cell system 1 to the heat exchanger 4, and the heat absorption loop 20 is used to transfer heat at the heat exchanger 4 to the solid hydrogen storage module 6 and the phase change heat storage module 7. In this embodiment, the heat dissipation circuit 10 and the heat absorption circuit 20 are connected by heat conduction, and the heat dissipation circuit 10 and the liquid circulating in the heat absorption circuit 20 are not communicated, that is, the hydrothermal circulation circuit adopts two relatively independent small circulation circuits, so that the circulation flow path can be reduced, and the heat exchange efficiency can be improved. In an embodiment, the heat exchanger 4 is a plate heat exchanger. The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of metal plates with a certain corrugated shape or other turbulence structures, a lamellar channel is formed between various plates, and cooling liquid flows through the lamellar channel to exchange heat through the metal plates, so that the plate heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like. Of course, in other embodiments, other types of heat exchangers may be used.
The heat dissipation circuit 10 is provided with a heat dissipation module 3, the heat dissipation module 3 comprises a radiator and a fan, the heat dissipation circuit 10 is provided with a first water pump 2, and a water heat pipe of the heat dissipation circuit 10 returns to the fuel cell system 1 through the fuel cell system 1, the first water pump 2, the heat dissipation module 3 and the heat exchanger 4 to form a circulation circuit. The heat generated during the operation of the fuel cell system 1 is absorbed by the cooling liquid in the heat dissipation circuit 10, the temperature of the cooling liquid rises to form high-temperature liquid, part of the heat is dissipated through the heat dissipation module 3, then the heat is exchanged with the heat absorption circuit 20 at the heat exchanger 4, the temperature of the cooling liquid in the heat dissipation circuit 10 decreases to form low-temperature liquid, and the low-temperature liquid flows back to the fuel cell system 1 to absorb and take away the heat generated by the fuel cell system 1 again, and the circulation is performed.
The heat absorption loop 20 is provided with a second water pump 5, and the solid hydrogen storage module 6 and the phase change heat storage module 7 are arranged in parallel and connected to the heat absorption loop 20. The heat absorption circuit 20 comprises a controllable valve 8, the controllable valve 8 being configured to distribute heat transferred to the solid state hydrogen storage module 6 and to the phase change heat storage module 7. The controllable valve 8 distributes the heat transferred to the solid state hydrogen storage module 6 and to the phase change heat storage module 7 by controlling the amount of flow through, not through, or through which the cooling fluid in the endothermic circuit 20 flows. In other words, the controllable valve 8 can control the coolant in the heat absorption loop 20 to flow through only the solid-state hydrogen storage module 6, only the phase-change heat storage module 7, or both the solid-state hydrogen storage module 6 and the phase-change heat storage module 7. In this embodiment, the controllable valve 8 is a three-way valve, two outlets of the three-way valve are respectively connected with a hydrothermal pipeline flowing through the solid hydrogen storage module 6 and the phase-change heat storage module 7, and the opening and closing and the opening of the two outlets of the three-way valve are adjustable. The hydrothermal pipeline of the heat absorption loop 20 returns to the heat exchanger 4 through the heat exchanger 4, the controllable valve 8, the solid hydrogen storage module 6 and/or the phase change heat storage module 7 and the second water pump 5 to form a circulation loop. The temperature of the cooling liquid in the heat absorption loop 20 rises to form high-temperature liquid after absorbing heat at the heat exchanger 4, after flowing through the solid hydrogen storage module 6 and/or the phase change heat storage module 7 through the controllable valve 8, the heat is absorbed by the solid hydrogen storage module 6 and/or the phase change heat storage module 7, the temperature of the cooling liquid is reduced to form low-temperature liquid, and the low-temperature liquid flows back to the heat exchanger 4 to absorb and take away the heat again, and the circulation is performed.
Referring to fig. 3, when the fuel cell system 1 is operating under low load, since the amount of heat to be dissipated is not great, it is sufficient to only rely on the heat dissipation module 3 and the solid-state hydrogen storage module 6, and the controllable valve 8 is controlled to close the pipeline flowing through the phase change heat storage module 7, so that only the coolant flows through the solid-state hydrogen storage module 6, and the broken line is a non-conductive pipeline as shown in fig. 3. In this way, a part of the heat generated during the operation of the fuel cell system 1 is dissipated by the heat dissipation module 3, and the other part is transferred to the heat exchanger 4 to exchange heat with the heat absorption circuit 20, so that the cooling liquid in the heat absorption circuit 20 is heated to be high-temperature liquid, and when the high-temperature liquid passes through the solid-state hydrogen storage module 6, the heat of the cooling liquid is absorbed by the solid-state hydrogen storage module 6 due to the fact that the solid-state hydrogen storage module 6 releases hydrogen and needs to absorb the heat, the temperature of the cooling liquid is reduced, and the cooling liquid becomes low-temperature liquid and returns to the heat exchanger 4.
Referring to fig. 4, when the fuel cell system 1 is operated under a high load condition, the amount of heat required to be dissipated is maximized. At this time, the controllable valve 8 is controlled to open the pipeline flowing through the solid-state hydrogen storage module 6 and the phase-change heat storage module 7, so that the cooling liquid in the heat absorption loop 20 passes through the solid-state hydrogen storage module 6 and the phase-change heat storage module at the same time. Since the phase change heat storage module 7 can also absorb heat, the temperature of the cooling liquid passing through it will also decrease. Since the solid-state hydrogen storage module 6 and the phase-change heat storage module 7 absorb heat at the same time, heat generated when the whole fuel cell system 1 operates can be transferred without increasing the heat radiator and the fan heat radiation power. It should be noted that, the above-mentioned low-load condition and high-load condition are relatively speaking, and those skilled in the art may set the cooling liquid below a certain load to flow through only the solid-state hydrogen storage module 6 and flow through both the solid-state hydrogen storage module 6 and the phase-change heat storage module 7 above a certain load according to the actual heat generating requirement of the fuel cell system 1.
Referring to fig. 5, after the fuel cell system 1 is stopped, the solid-state hydrogen storage module 6 is not required to release hydrogen, and when the ambient temperature is low at the next start-up, the fuel cell system 1 needs to perform cold start-up, at this time, the solid-state hydrogen storage module 6 cannot release hydrogen, and the fuel cell system 1 cannot start-up to provide heat, so an external heating component is required to raise the temperature of the solid-state hydrogen storage module 6. Since the phase change heat storage module 7 has already stored a certain amount of heat during the last operation of the fuel cell system 1, the cooling liquid in the heat absorption loop 20 can be circulated by the second water pump 5, and the heat in the phase change heat storage module 7 is transferred to the solid-state hydrogen storage module 6 for maintaining a certain temperature, so that the cold start time can be shortened. In some embodiments, the water thermal management system is also configured with an electrical heater by which the solid state hydrogen storage module 6 may be heated to assist in the cold start process.
In an actual measurement example adopting the scheme of the invention, the total heating power of the hydrogen fuel cell system with the net output power of about 180KW is about 200KW, in the current mainstream technical scheme, the 200KW is required to be dissipated by a radiator and a fan, while in the current mainstream technical scheme, the solid-state hydrogen storage module 6 can absorb about 60KW at the rated point, and the phase-change heat storage module 7 can absorb about 30KW, so that the heat dissipation power of the radiator and the fan can be reduced to 110KW, which is only 55% of the main stream technical scheme, thereby greatly reducing the number of the radiator and reducing the fan noise at the rated point. In addition, without the phase change heat storage module 7, the heat of the cold start of the solid-state hydrogen storage module 6 is all that is required for external heating components to provide. Taking the solid-state hydrogen storage module 6 as a 200L cooling cavity as an example, in order to raise the temperature of the solid-state hydrogen storage module from 0 ℃ to 45 ℃ in 30 minutes, the heating power is about 30KW, and 15KWh of electric energy is needed in the whole heating process.
The invention also provides a water heat management method for the water heat management system, which comprises the steps of controlling the water heat circulation loop to transfer heat of the fuel cell system 1 to the solid-state hydrogen storage module 6 and controlling the water heat circulation loop not to transfer heat to the phase-change heat storage module 7 when the fuel cell system 1 is operated under a low-load working condition, and controlling the water heat circulation loop to transfer heat of the fuel cell system 1 to the solid-state hydrogen storage module 6 and the phase-change heat storage module 7 when the fuel cell system 1 is operated under a high-load working condition.
Further, the hydrothermal management method includes controlling the hydrothermal circulation circuit to transfer the heat stored by the phase change heat storage module 7 to the solid-state hydrogen storage module 6 when the fuel cell system 1 is cold-started.
The present invention also provides a fuel cell system 1 comprising the hydrothermal management system as described above.
As is apparent from the above description of the specific embodiments, the water thermal management system provided by the present invention includes the solid-state hydrogen storage module 6, the phase-change heat storage module 7, and the hydrothermal circulation circuit, wherein the solid-state hydrogen storage module 6 is configured as a hydrogen supply source of the fuel cell system 1 to be capable of absorbing heat and releasing hydrogen, the phase-change heat storage module 7 is configured to be capable of storing part of heat generated by operation of the fuel cell system 1, the hydrothermal circulation circuit is configured to be capable of transferring heat generated by operation of the fuel cell system 1 to the solid-state hydrogen storage module 6 and the phase-change heat storage module 7, and transferring heat stored by the phase-change heat storage module 7 to the solid-state hydrogen storage module 6, so that heat generated by operation of the fuel cell system 1 can be transferred to the solid-state hydrogen storage module 6 to be utilized and transferred to the phase-change heat storage module 7 to be stored, thereby improving heat utilization rate and reducing heat dissipation power and operation noise of a heat dissipation component.
While the invention has been described with reference to several particular embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
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| CN119852455A (en) * | 2025-03-19 | 2025-04-18 | 四川新工绿氢科技有限公司 | Solid-state hydrogen energy system and hydrogen power humanoid robot |
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