EP4526497A2 - Système d'électrolyseur d'eau - Google Patents

Système d'électrolyseur d'eau

Info

Publication number
EP4526497A2
EP4526497A2 EP23727510.2A EP23727510A EP4526497A2 EP 4526497 A2 EP4526497 A2 EP 4526497A2 EP 23727510 A EP23727510 A EP 23727510A EP 4526497 A2 EP4526497 A2 EP 4526497A2
Authority
EP
European Patent Office
Prior art keywords
water
module
water electrolyzer
electrolyzer system
media
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23727510.2A
Other languages
German (de)
English (en)
Inventor
Joerg ZIUBER
Markus Berger
Annika UTZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP4526497A2 publication Critical patent/EP4526497A2/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
    • C25B9/66—Electric inter-cell connections including jumper switches
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type
    • 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
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Definitions

  • the present invention relates to a water electrolyzer system for producing hydrogen. Furthermore, the invention relates to a hydrogen factory, which includes at least one such water electrolyzer system.
  • the core of a PEM water electrolyzer is the electrolysis stack.
  • the general trend for industrial hydrogen production is towards very powerful units with several MW of output.
  • the electrolyser also includes various supply units, the so-called Balance of Plant (BoP). These units are water pumps, gas-water separators, ion filters, heat exchangers, temperature sensors, pressure sensors, gas sensors, ultrapure water treatment, hydrogen post-treatment and purification, transformers, rectifiers, control and monitoring units, cables, pipes and valves. How these components are connected to each other and whether these components supply one stack or several stacks is within the manufacturer's design and discretion. Depending on the design principle, different combinations and pre-assembled units can be advantageous.
  • DE 10 055 973 A1 discloses an offshore power plant with several individual power plants, each with its own energy storage device.
  • the power systems are electrically connected to a busbar.
  • the energy storage devices have electrolyzers with which hydrogen and oxygen can be produced from water that is stored in pressure tanks.
  • In the energy storage device is one Fuel cell arrangement arranged, with which electrical energy can be generated from the hydrogen.
  • the system includes several solar panels and several wind turbines to generate energy.
  • the system has one or more electrolyzers with which water, hydrogen and oxygen can be produced.
  • the costs are primarily influenced by transport to the construction site and the effort involved in assembly and commissioning.
  • the delivery of individual components may be cheap for transport, but assembly and commissioning require a lot of time and personnel.
  • the object underlying the invention is to provide a water electrolyzer system with which a simpler, faster and more cost-effective construction of such a system is possible.
  • the invention specifies a water electrolyzer system for producing hydrogen.
  • the water electrolyzer system includes at least one electrolysis stack for converting water into hydrogen, power electronics for supplying the electrolysis stack, components for media preparation and media conveyance of the process media supplied to and removed from the electrolysis stack, and a control unit for controlling the electrolysis stack, the power electronics and the Components for media preparation and media promotion.
  • At least the electrolysis stack, the power electronics and the control unit are together as an electrolyzer module, and the components for media preparation and Media conveying is designed together as a process module, with connection options being provided on the modules, via which the individual modules can be fluidically and electrically connected to one another.
  • the electrolysis stack is advantageously a PEM electrolysis stack.
  • a module is understood to be a structural unit that is manufactured together in a manufacturing factory. These modules are preferably manufactured automatically. After production, the modules are transported, for example by truck or ship, to the location where a hydrogen factory is to be built or expanded. According to the invention, the electrolyzer system only has the assemblies of the electrolysis module, the process module and the control module. Depending on the size of the hydrogen factory, several of these modules can be provided. Automated production in the factory significantly reduces the time and personnel required to set up and connect the individual components and the costs for such a system.
  • the modules can be built and expanded according to a modular principle.
  • the modular design also reduces the transport effort, as by combining the individual components into modules, fewer trips are necessary to bring all the components on site.
  • the electrolysis stacks In order to ensure easy transport of the electrolyzer module, the electrolysis stacks have a maximum output of 1 MW. With such performance, the weight does not exceed any limit necessary for transportability.
  • the power of the electrolysis stacks is preferably between 500kW and 1500kW.
  • the modules only have to be connected on site using the connection options, which can be standardized, for example. This means that only lines between these connection options are necessary, which reduces the number of lines. This also reduces the effort required to connect the modules to one another.
  • the electrolyzer module or the entire water electrolyzer system is arranged in a sea freight container housing.
  • the power electronics are designed to transform an alternating current into direct current. Direct current must be applied to the electrolysis stacks. If the water electrolyzer system is supplied with alternating current, then a corresponding transformation is necessary.
  • connection options are designed as plug and/or flange connections.
  • the use of plug and flange connections has the advantage that connections do not have to be made using, for example, complex welding. This can save costs for a welder.
  • the connections can be formed quickly, for example by tightening screws. This allows the modules to be connected quickly and cost-effectively.
  • the modules are connected to one another exclusively using prefabricated process media and power lines.
  • the prefabricated process media and power lines have already been manufactured, for example, in an automated production process. These are only connected to connect the connection options. This means that no connecting cables need to be laboriously laid. This also significantly reduces the manufacturing costs of such a water electrolyzer system and the time required for it.
  • a power line is designed as a common busbar, which projects into both the electrolyzer module and the process module. All electrical consumers of the electrolyzer module and process module can be connected to the busbar and are therefore preferably only supplied with electrical power via this busbar.
  • connection option is preferably designed in such a way that a data and a power connection can be connected via a common plug.
  • the plug therefore has both contacts for establishing a power connection and contacts for a data connection. This means that only a single plug is necessary to ensure a power and data connection.
  • a plug has the advantage that no tools are necessary to prepare the power and data cables for a connection and to connect them. This makes it quick and easy to establish a connection.
  • the plugs are designed to be interchangeable, so that even a non-expert in this area can connect them correctly.
  • the process module additionally has a pump for circulating the water through the electrolysis stack.
  • Arranging the pump in the process module has the advantage that the pump can supply several electrolyzer modules.
  • the electrolyzer module has the pump for circulating the water through the electrolysis stack.
  • Arranging the pump in the electrolyzer module instead of arranging it in the process module, has the advantage that a smaller pump can be used for each electrolyzer module.
  • the pump fails, not all electrolyzer modules are deactivated, but only that Electrolyzer module in which the pump is arranged. This means that the water electrolyzer system remains in operation, creating redundancy. If a defect in a pump causes metal chips to enter the electrolysis stack, only this electrolysis stack needs to be replaced instead of all electrolysis stacks.
  • the modules are designed such that their size is smaller than or equal to the size of a sea freight container.
  • the size of such a sea freight container is determined according to the ISO standard.
  • the advantage of such containers is that they can be easily transported by ship, train or truck. This means that no heavy goods transport or a separate transport route is necessary to transport the modules to the installation site. This significantly reduces the costs and time for transporting the components.
  • the electrolyzer module and the control unit together have a common connection option to the process module.
  • a common connection option is understood to mean that the connections of the control unit and the electrolyzer module are arranged directly next to one another. Therefore, only the process module needs to be connected to the common connection option. This further simplifies the connection of the modules, so that only power and process lines need to be provided between the common connection option and the process module.
  • the common connection option is advantageously arranged in such a way that when the modules are positioned, the distance between the common connection option and a connection option on the process module is minimal, or is directly opposite one another.
  • several electrolyzer modules form a common connection option to the process module.
  • the several electrolyzer modules are thus arranged in a common housing.
  • the process and data lines of the electrolyzer modules are connected to each other within the housing and are located on the housing only common connection option for all electrolyzer modules to the process module.
  • the connections between the electrolyzer modules are preferably carried out automatically during the production of the modules. The manufacturing costs of connecting the electrolyzer modules to one another are reduced because they do not have to be formed on site. All that needs to be established is a connection between the common connection option and the process module.
  • a hydrogen factory is also specified, which includes at least one such water electrolyzer system.
  • a hydrogen factory includes at least one such water electrolyzer system.
  • the advantages mentioned above are essentially achieved.
  • Such a hydrogen factory can therefore be set up quickly, economically and easily.
  • the modular design ensures that the hydrogen factory can be easily expanded, especially in terms of output.
  • FIG. 1 Water electrolyzer system according to an exemplary embodiment of the invention.
  • FIG. 1 Water electrolyzer system according to a further exemplary embodiment of the invention.
  • the water electrolyzer system 1 shows a water electrolyzer system 1 according to an exemplary embodiment of the invention.
  • the water electrolyzer system 1 according to the exemplary embodiment includes two electrolysis modules 4, each of which has an electrolysis stack 8 (only shown for one electrolysis module) for converting water into hydrogen.
  • power electronics 12 are arranged in the electrolysis module 4, via which a supplied alternating current is preferably converted into direct current.
  • a pump 16 is arranged in the electrolysis module 4, with which water or the process medium can be circulated through the electrolysis stack 8.
  • the water electrolyzer system 1 additionally includes a control unit 18, which is arranged in a control device 20.
  • the control unit 18 is connected via control data lines 24 to the electrolysis modules 4, for controlling the electrolysis stacks 8, the power electronics 12 and the pump 16.
  • the control data line 24 is connected together with a power line 28 to a common first electrolysis module connection option 32. Both lines 24, 28 can be connected via a common plug to the first electrolysis module connection option 32, which is designed as a socket.
  • the two electrolysis modules 4 and the control unit 18 are arranged in a common electrolyzer module 36, which is preferably housed in a housing, for example a sea freight container.
  • a second electrolysis module connection option 40 is arranged on the electrolysis modules 4, via which process media lines 44 of the electrolysis modules 4 are connected to a common housing connection option 48.
  • a control data line 24 of the control unit 18 is also connected to this common housing connection option 48.
  • the water electrolyzer system 1 additionally includes a process module 52, which has various components for preparing and conditioning the process media.
  • the process module 52 has a heat exchanger 56, with which the cooling water for the power electronics 12 and the water for the electrolysis stack 8 is cooled.
  • the heat exchanger 56 is connected to a cooling water connection 60.
  • a cathode gas-water separator 64 is additionally arranged in the process module 52, in which the hydrogen coming from the cathode is separated from the cathode process medium and directed to a hydrogen connection 68.
  • an anode gas-water separator 72 is arranged in the process module 52, in which the oxygen is separated from the anode process medium and directed to an oxygen connection 76.
  • the process medium is deionized in an ion exchanger 80 for use in the electrolysis stack 8.
  • the process module 52 has a common process module connection option 84 to which the components of the process module 52 are connected.
  • the housing connection option 48 is connected to the process module connection option 84 via connecting lines 88.
  • the power line 28 is designed as a common busbar. Both electrolysis modules 4, as well as the control module 20 and the process module 52, have electrical connections to this common busbar.
  • the water electrolyzer system 1 has two electrolysis modules 4, each with an electrolysis stack 8 and power electronics 12.
  • the power electronics 12 preferably each have transfer switches and/or transformers.
  • the two electrolysis modules 4 together with the control unit 18 form an electrolyzer module 36.
  • the water electrolyzer system 1 further comprises a process module 52.
  • the pump 16, the heat exchanger 56, the cathode gas-water separator 64, the anode gas-water separator 72 and the ion exchanger 80 are arranged in the process module 52.
  • Process media lines 44 are arranged between the electrolyzer module 36 and the process module 52, over which the media lines (in particular water and hydrogen) run between the two modules 36, 52.
  • the water electrolyzer system 1 also has the busbar designed as a common power line 28, which protrudes into both the electrolyzer module 36 and the process module 52.
  • the electrical consumers, such as the electrolysis stacks 8, the pump 16 and the control unit 18, have electrical connections to the busbar 28.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

L'invention concerne un système d'électrolyseur d'eau (1) pour produire de l'hydrogène. Ce système d'électrolyseur d'eau (1) comprend une pile d'électrolyse (8) pour convertir de l'eau en hydrogène, un système électronique de puissance (12) pour transformer le courant alternatif en courant continu pour alimenter la pile d'électrolyse (8), des composants (56, 64, 72, 80) pour préparer les fluides de traitement amenés jusqu'à la pile d'électrolyse (8) et partant de celle-ci, et une unité de contrôle (18) pour commander la pile d'électrolyse (8), le système électronique de puissance (12) et les composants (56,64,72, 80) pour la préparation des fluides. Au moins la pile d'électrolyse (8), le système électronique de puissance (12) et l'unité de contrôle (18) sont conçus ensemble sous la forme d'un module d'électrolyseur (36) et les composants (56,64,72, 80) de préparation de fluides et transport de fluides se présentent ensemble sous la forme d'un module de traitement (52). Des possibilités de liaison (32,40,48, 84) sont prévues sur les modules (36, 52) pour relier entre eux les modules (36, 52) individuels de manière fluidique et électrique.
EP23727510.2A 2022-05-17 2023-05-17 Système d'électrolyseur d'eau Pending EP4526497A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022204834.2A DE102022204834A1 (de) 2022-05-17 2022-05-17 Wasserelektrolyseur-System
PCT/EP2023/063215 WO2023222741A2 (fr) 2022-05-17 2023-05-17 Système d'électrolyseur d'eau

Publications (1)

Publication Number Publication Date
EP4526497A2 true EP4526497A2 (fr) 2025-03-26

Family

ID=86609622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23727510.2A Pending EP4526497A2 (fr) 2022-05-17 2023-05-17 Système d'électrolyseur d'eau

Country Status (8)

Country Link
US (1) US20250305164A1 (fr)
EP (1) EP4526497A2 (fr)
JP (1) JP7837437B2 (fr)
KR (1) KR20250010650A (fr)
CN (1) CN119213171A (fr)
AU (1) AU2023272285A1 (fr)
DE (1) DE102022204834A1 (fr)
WO (1) WO2023222741A2 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10055973A1 (de) 2000-11-11 2002-05-23 Abb Research Ltd Verfahren und Vorrichtung zur bedarfsabhängigen Regelung der Ausgangsleistung eines küstennahen Hochsee-Kraftwerks
FR2959065B1 (fr) * 2010-04-20 2012-12-28 Helion Dispositif de stockage et de restitution d'energie electrique
EP3633069A4 (fr) * 2017-06-02 2021-02-17 H2B2 Electrolysis Technologies, S.L. Générateur d'hydrogène de 2 mw logé dans un conteneur
DE202019003849U1 (de) 2019-09-19 2020-07-02 I-S-T Int. Strategies & Technologies GmbH System zur Energieerzeugung und Energiemanagement
AU2020387622A1 (en) 2019-11-21 2022-06-23 Ohmium International, Inc. Electrochemical devices, modules, and systems for hydrogen generation and methods of operating thereof
EP4061984A4 (fr) 2019-11-21 2024-07-31 Ohmium International, Inc. Systèmes modulaires de génération d'hydrogène et leurs procédés de fonctionnement
WO2021127156A1 (fr) 2019-12-17 2021-06-24 Ohmium International, Inc. Systèmes et procédés de traitement de l'eau pour la production d'hydrogène
EP4001467B1 (fr) * 2020-11-16 2025-03-19 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Agencement d'électrolyse

Also Published As

Publication number Publication date
US20250305164A1 (en) 2025-10-02
JP2025515737A (ja) 2025-05-20
CN119213171A (zh) 2024-12-27
JP7837437B2 (ja) 2026-03-30
AU2023272285A1 (en) 2025-01-09
KR20250010650A (ko) 2025-01-21
DE102022204834A1 (de) 2023-11-23
WO2023222741A2 (fr) 2023-11-23
WO2023222741A3 (fr) 2024-03-07

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