CN113445062A - Water electrolysis hydrogen production device, control method of water electrolysis hydrogen production device and electronic equipment - Google Patents

Water electrolysis hydrogen production device, control method of water electrolysis hydrogen production device and electronic equipment Download PDF

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Publication number
CN113445062A
CN113445062A CN202110694839.XA CN202110694839A CN113445062A CN 113445062 A CN113445062 A CN 113445062A CN 202110694839 A CN202110694839 A CN 202110694839A CN 113445062 A CN113445062 A CN 113445062A
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hydrogen production
pem
production device
alkaline
electrolytic
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荆锴
孙鹤旭
梅春晓
董砚
廖文喆
刘斌
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Xintian Green Energy Co ltd
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Xintian Green Energy Co ltd
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • C25B1/04Hydrogen or oxygen by electrolysis of water
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00Operating or servicing cells
    • C25B15/02Process control or regulation
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00Operating or servicing cells
    • C25B15/02Process control or regulation
    • C25B15/021Process control or regulation of heating or cooling
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00Operating or servicing cells
    • C25B15/02Process control or regulation
    • C25B15/023Measuring, analysing or testing during electrolytic production
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60Constructional parts of cells
    • C25B9/67Heating or cooling means
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70Assemblies comprising two or more cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

The invention discloses a water electrolysis hydrogen production device, a control method of the water electrolysis hydrogen production device and electronic equipment. Wherein, this electrolytic water hydrogen plant includes: the heat exchanger is connected with the alkaline electrolytic cell of the alkaline electrolytic hydrogen production device and the PEM electrolytic cell of the PEM electrolytic hydrogen production device and is used for providing starting heat for the other electrolytic cell in a heat exchange mode when detecting that any one of the alkaline electrolytic cell and the PEM electrolytic cell is opened; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, storing heat to provide heat when the water electrolysis hydrogen production device is at low temperature or started; and the control unit is respectively connected with the direct current bus, the alkaline electrolytic hydrogen production device, the PEM electrolytic hydrogen production device and the heat exchanger and is used for switching in or out the alkaline electrolytic cell by adopting the alkaline electrolytic device and switching in or out the PEM electrolytic cell by adopting the PEM electrolytic device when monitoring the change of the input power of the direct current bus so as to adjust the hydrogen production power supply power adaptive to the electrolytic water hydrogen production device.

Description

Water electrolysis hydrogen production device, control method of water electrolysis hydrogen production device and electronic equipment
Technical Field
The invention relates to the technical field of hydrogen production by water electrolysis, in particular to a hydrogen production device by water electrolysis, a control method of the hydrogen production device by water electrolysis and electronic equipment.
Background
Under the current situation of environmental pollution and gradual depletion of fossil energy, hydrogen (gas) is receiving wide attention in recent years as a clean secondary energy source. The hydrogen production by water electrolysis directly utilizes electric energy to decompose water to obtain hydrogen, is a hydrogen preparation mode with small pollution and high purity, particularly adopts a mode of 'renewable energy power generation + hydrogen production by water electrolysis', has the advantages of zero pollution and zero carbon emission, and is the focus of solving the bottleneck of new energy consumption such as wind power, photovoltaic and the like and realizing new energy transformation at present.
Because the efficiency of hydrogen production by water electrolysis is low, the existing new energy hydrogen production system by water electrolysis still mostly adopts the modes of adding an energy storage device, connecting a network power supply and the like to stabilize the fluctuation and intermittency of new energy such as wind, light and the like so as to maintain the stability of hydrogen production power, and thus, the cost of the whole system is also improved. The existing water electrolysis hydrogen production device has insufficient response capability to the direct access of new energy fluctuation power, even leads to the failure of normal operation of an electrolytic cell, and is influenced by power fluctuation, and frequent starting and stopping of the water electrolysis device not only influences the change of hydrogen and oxygen concentration, but also reduces the starting speed, and further influences the yield, quality and production safety of hydrogen. At present, the water electrolysis hydrogen production device in the prior art is difficult to adjust in real time to be matched with the fluctuating new energy power generation power, and a water electrolysis hydrogen production device which is suitable for wide power fluctuation input under new energy power generation and an optimal configuration method thereof are still lacked.
At present, the technology of hydrogen production by water electrolysis is mature, for example, hydrogen production by alkaline water electrolysis, hydrogen production by Proton Exchange Membrane (PEM) electrolysis and hydrogen production by high-temperature solid oxide. The hydrogen production technology by alkaline electrolysis of water is the most mature and the cost is the lowest, the electrolysis power interval of the general alkaline electrolysis cell is 20-150% of the rated power (the highest power of part of the alkaline electrolysis cell can reach 200% of the rated power), and when the input power is lower than 20% of the rated power, the yield, the quality and the production safety of the hydrogen can be influenced. Although the PEM water electrolysis hydrogen production device has a wide working range, the cost is higher; the high-temperature solid oxide hydrogen production technology requires high-temperature and high-pressure working conditions, has a small application range, and is in a test stage at present. Furthermore, alkaline electrolyzers have a longer service life and lower annual maintenance costs compared to PEM electrolyzers.
Disclosure of Invention
The embodiment of the invention provides a water electrolysis hydrogen production device, a control method of the water electrolysis hydrogen production device and electronic equipment, which at least solve the technical problem that the hydrogen production device consumes power in a full power range under fluctuating input power in the prior art.
According to an aspect of the embodiments of the present invention, there is provided an apparatus for producing hydrogen by electrolyzing water, comprising a dc bus, an alkaline electrolytic hydrogen production apparatus, a proton exchange membrane PEM electrolytic hydrogen production apparatus, a heat exchanger, and a control unit, wherein: the heat exchanger is connected with the alkaline electrolytic cell of the alkaline electrolytic hydrogen production device and the PEM electrolytic cell of the PEM electrolytic hydrogen production device and is used for providing starting heat for the other electrolytic cell in a heat exchange mode when the opening of any one of the alkaline electrolytic cell and the PEM electrolytic cell is detected; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, storing heat to provide heat when the water electrolysis hydrogen production device is at low temperature or started; the control unit is respectively connected with the direct current bus, the alkaline electrolytic hydrogen production device, the PEM electrolytic hydrogen production device and the heat exchanger, and is used for switching in or out an alkaline electrolytic cell by adopting the alkaline electrolytic device and switching in or out a PEM electrolytic cell by adopting the PEM electrolytic device when monitoring the input power change of the direct current bus so as to adjust the hydrogen production power supply power adaptive to the input power.
Optionally, the alkaline electrolysis hydrogen production apparatus includes: first direct current-direct current converter, alkaline electrolysis trough, first electrolyte circulating pump, first hydrogen separator, first oxygen separator, wherein:
the first dc-dc converter is connected to the dc bus and the alkaline electrolytic cell, respectively, the first hydrogen separator is connected to the alkaline electrolytic cell, and the first oxygen separator is connected to the alkaline electrolytic cell; the first electrolyte circulating pump is connected to the alkaline electrolytic cell and the heat exchanger, respectively.
Optionally, the PEM electrolytic hydrogen production apparatus includes: second direct current-direct current converter, PEM electrolysis trough, second electrolyte circulating pump, second hydrogen separator, second oxygen separator, wherein:
the second direct current-direct current converter is respectively connected with the direct current bus and the PEM electrolytic cell, the second hydrogen separators are respectively connected with the PEM electrolytic cell, and the second oxygen separators are connected with the PEM electrolytic cell; the second electrolyte circulating pump is respectively connected with the PEM electrolytic tank and the heat exchanger.
Optionally, the first dc-dc converter and the second dc-dc converter are parallel interleaved converters of a step-up chopper and a step-down chopper, and the devices used are power triodes, metal oxide semiconductor field effect transistors or insulated gate bipolar transistors.
Optionally, the direct-current bus is connected with a direct-current microgrid, wherein the direct-current microgrid is accessed by wind power generation, photovoltaic power generation or wind-solar hybrid power generation through direct current conversion.
Optionally, the rated capacity of the alkaline electrolysis device is a first predetermined proportion of the rated capacity of the power generation of the new energy, and the rated capacity of the PEM electrolysis device is a second predetermined proportion of the rated capacity of the power generation of the new energy.
Optionally, the control unit is further configured to control the alkaline electrolytic hydrogen production device to be in a standby state when it is detected that the input power is lower than a second predetermined proportion of the new energy power generation rated capacity, wherein a PEM electrolyte in the PEM electrolytic hydrogen production device provides heat for the alkaline electrolyte in the alkaline electrolytic hydrogen production device through a heat exchanger, so as to increase the starting speed of the alkaline electrolyzer.
Optionally, the control unit is further configured to, when it is detected that the input power increases and exceeds a second predetermined proportion of the new energy power generation rated capacity and is lower than a first predetermined proportion of the new energy power generation rated capacity, control the heat exchanger to be connected to the alkaline electrolytic hydrogen production device to gradually reduce the voltage of the PEM electrolytic hydrogen production device to a maintenance voltage, so that the PEM electrolytic hydrogen production device is in a standby state, wherein an alkaline electrolyte in the alkaline electrolytic hydrogen production device supplies heat to a PEM electrolyte in the PEM electrolytic hydrogen production device through the heat exchanger, so as to increase the starting speed of the PEM electrolytic cell.
Optionally, the control unit is further configured to gradually start the PEM electrolytic hydrogen production device under the condition that the heat exchanger is connected to the alkaline electrolytic hydrogen production device when detecting that the input power is increased and exceeds a first predetermined proportion of a new energy power generation rated capacity, wherein an alkaline electrolyte in the alkaline electrolytic hydrogen production device and a PEM electrolyte in the PEM electrolytic hydrogen production device dissipate heat through the heat exchanger and heat storage is started by using the heat exchanger.
Optionally, the control unit is further configured to gradually switch off the PEM electrolytic hydrogen production device when detecting that the input power is reduced and the input power is lower than a first predetermined proportion of the new energy power generation rated capacity and higher than a second predetermined proportion of the new energy power generation rated capacity, and then control the PEM electrolytic hydrogen production device to be in a standby state, wherein the alkaline electrolyte in the alkaline electrolytic hydrogen production device provides heat for the PEM electrolyte in the PEM electrolytic hydrogen production device through the heat exchanger, so as to increase the starting speed of the PEM electrolytic cell.
Optionally, the control unit is further configured to, when it is detected that the input power is reduced and the input power is lower than a second predetermined proportion of the new energy power generation rated capacity, switch in the PEM electrolytic hydrogen production apparatus and gradually reduce the voltage of the alkaline electrolytic hydrogen production apparatus to a holding voltage, so that the alkaline electrolytic hydrogen production apparatus is in a standby state, wherein a PEM electrolyte in the PEM electrolytic hydrogen production apparatus is used to provide heat for the heat exchanger, and a PEM electrolyte in the PEM electrolytic hydrogen production apparatus is used to provide heat for the alkaline electrolyte in the alkaline electrolytic hydrogen production apparatus through the heat exchanger, so as to increase the starting speed of the alkaline electrolytic cell.
According to another aspect of the embodiments of the present invention, there is also provided a control method of a water electrolysis hydrogen production apparatus, where the water electrolysis hydrogen production apparatus includes a direct current bus, an alkaline electrolysis hydrogen production apparatus, a proton exchange membrane PEM electrolysis hydrogen production apparatus, a heat exchanger and a control unit, the heat exchanger is connected to an alkaline electrolyzer of the alkaline electrolysis hydrogen production apparatus and to a PEM electrolyzer of the PEM electrolysis hydrogen production apparatus, and the control unit is respectively connected to the direct current bus, the alkaline electrolysis hydrogen production apparatus, the PEM electrolysis hydrogen production apparatus and the heat exchanger, where: when any one of the alkaline electrolytic cell and the PEM electrolytic cell is detected to be opened, controlling the heat exchanger to provide starting heat for the other electrolytic cell in a heat exchange manner; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, controlling the heat exchanger to store heat so as to provide heat when the electrolytic water hydrogen production device is at low temperature or is started; and when the input power change of the direct current bus is detected, switching in or switching out an alkaline electrolytic cell by adopting the alkaline electrolysis device and switching in or switching out a PEM electrolytic cell by adopting the PEM electrolysis device so as to adjust the hydrogen production power supply power matched with the input power.
According to another aspect of the embodiments of the present invention, there is also provided a non-volatile storage medium, wherein the non-volatile storage medium stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the control method of the hydrogen production apparatus by electrolyzing water.
According to another aspect of the embodiments of the present invention, there is also provided an electronic device, including a memory and a processor, where the memory stores a computer program, and the processor is configured to execute the computer program to execute the control method of the hydrogen production apparatus by electrolyzing water.
In the embodiment of the invention, a heat exchanger in the water electrolysis hydrogen production device is connected with an alkaline electrolytic cell of the alkaline electrolysis hydrogen production device and a PEM electrolytic cell of the PEM electrolysis hydrogen production device, and is used for providing starting heat for the other electrolytic cell in a heat exchange mode when detecting that any one of the alkaline electrolytic cell and the PEM electrolytic cell is opened; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, storing heat to provide heat when the water electrolysis hydrogen production device is at low temperature or started; the control unit is respectively connected with the direct current bus, the alkaline electrolytic hydrogen production device, the PEM electrolytic hydrogen production device and the heat exchanger, when the input power of the direct current bus is monitored to change, the alkaline electrolyzer is switched in or out by adopting the alkaline electrolyzer and the PEM electrolyzer is switched in or out by adopting the PEM electrolyzer, so as to adjust the hydrogen production power supply power matched with the input power, achieve the aim of compensating by adopting the full-power operation of PEM and avoiding the full-power consumption of the hydrogen production device under the condition of fluctuating input power, the hydrogen production power supply of the water electrolysis hydrogen production device is adjusted in real time to be matched with the fluctuating new energy power generation power, thereby realizing the technical effect of effectively avoiding the frequent start-stop of the water electrolysis hydrogen production device caused by the fluctuation type power input, further solves the technical problem that the hydrogen production device consumes work in the full power range under the condition of fluctuating input power in the prior art.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of a hydrogen production apparatus by water electrolysis according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling an apparatus for producing hydrogen by electrolyzing water according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control device of an apparatus for producing hydrogen by electrolyzing water according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, an embodiment of an apparatus for producing hydrogen by electrolyzing water is provided, and fig. 1 is a schematic structural diagram of an apparatus for producing hydrogen by electrolyzing water according to an embodiment of the present invention, as shown in fig. 1, the apparatus for producing hydrogen by electrolyzing water includes: direct current generating line, alkaline electrolysis hydrogen plant, proton exchange membrane PEM electrolysis hydrogen plant, heat exchanger and control unit, wherein:
the heat exchanger is connected with the alkaline electrolytic cell of the alkaline electrolytic hydrogen production device and the PEM electrolytic cell of the PEM electrolytic hydrogen production device and is used for providing starting heat for the other electrolytic cell in a heat exchange mode when the opening of any one of the alkaline electrolytic cell and the PEM electrolytic cell is detected; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, storing heat to provide heat when the water electrolysis hydrogen production device is at low temperature or started;
the control unit is respectively connected with the direct current bus, the alkaline electrolytic hydrogen production device, the PEM electrolytic hydrogen production device and the heat exchanger, and is used for switching in or out an alkaline electrolytic cell by adopting the alkaline electrolytic device and switching in or out a PEM electrolytic cell by adopting the PEM electrolytic device when monitoring the input power change of the direct current bus so as to adjust the hydrogen production power supply power adaptive to the input power.
In the embodiment of the invention, a heat exchanger in the water electrolysis hydrogen production device is connected with an alkaline electrolytic cell of the alkaline electrolysis hydrogen production device and a PEM electrolytic cell of the PEM electrolysis hydrogen production device, and is used for providing starting heat for the other electrolytic cell in a heat exchange mode when detecting that any one of the alkaline electrolytic cell and the PEM electrolytic cell is opened; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, storing heat to provide heat when the water electrolysis hydrogen production device is at low temperature or started; the control unit is respectively connected with the direct current bus, the alkaline electrolytic hydrogen production device, the PEM electrolytic hydrogen production device and the heat exchanger, when the input power of the direct current bus is monitored to change, the alkaline electrolyzer is switched in or out by adopting the alkaline electrolyzer and the PEM electrolyzer is switched in or out by adopting the PEM electrolyzer, so as to adjust the hydrogen production power supply power matched with the input power, achieve the aim of compensating by adopting the full-power operation of PEM and avoiding the full-power consumption of the hydrogen production device under the condition of fluctuating input power, the hydrogen production power supply of the water electrolysis hydrogen production device is adjusted in real time to be matched with the fluctuating new energy power generation power, thereby realizing the technical effect of effectively avoiding the frequent start-stop of the water electrolysis hydrogen production device caused by the fluctuation type power input, and further solves the technical problem that the hydrogen production device consumes power in the full power range under the condition of fluctuating input power in the prior art.
Optionally, in the embodiment of the application, the hydrogen production device by water electrolysis is a fluctuation type power input hydrogen production device by water electrolysis, and based on the fluctuation type power input hydrogen production device provided by the embodiment of the application, when different power inputs are responded, the fluctuation power of new energy can be maximally utilized by adopting a corresponding connection mode of the alkaline hydrogen production device by water electrolysis and a PEM hydrogen production device, and the hydrogen production cost is saved.
Optionally, the direct current bus is connected to new energy equipment, and the input power of the direct current bus is the input power of the new energy equipment to the water electrolysis hydrogen production device.
In an alternative embodiment, the heat exchanger (namely the electrolyte heat exchanger) is connected with the alkaline electrolytic cell and the PEM electrolytic cell, and the heat exchanger is a common part of the alkaline electrolytic hydrogen production device and the PEM electrolytic hydrogen production device, so that the number of used heat exchange devices is reduced, and the production and maintenance cost is reduced. The heat exchanger is used for exchanging heat to provide starting heat for another type of electrolytic cell when the electrolytic cell of any type is started; when both types of cells are turned on, the heat exchanger begins to store heat and provide heat at low temperature or at start-up.
Through the embodiment of the application, the starting speed can be obviously improved, the system can not be stopped, the frequent start and stop of the water electrolysis hydrogen production device caused by fluctuation type power input can be effectively avoided, the change of hydrogen and oxygen concentration can not be influenced, and the yield, the quality and the continuous and safe production of the hydrogen can be ensured.
In an alternative embodiment, as shown in FIG. 1, the above-described alkaline electrolytic hydrogen production apparatus comprises: first direct current-direct current converter (DC/DC converter), alkaline electrolysis trough, first electrolyte circulating pump, first hydrogen separator, first oxygen separator, wherein: the first dc-dc converter is connected to the dc bus and the alkaline electrolytic cell, respectively, the first hydrogen separator is connected to the alkaline electrolytic cell, and the first oxygen separator is connected to the alkaline electrolytic cell; the first electrolyte circulating pump is connected to the alkaline electrolytic cell and the heat exchanger, respectively.
As an alternative embodiment, the above alkaline electrolytic hydrogen production apparatus includes: the device comprises a first direct current-direct current converter (DC/DC converter) of the alkaline electrolysis device, an alkaline electrolysis bath, a first electrolyte circulating pump, a first hydrogen separator and a first oxygen separator. The first direct current-direct current converter is connected with a direct current bus and an alkaline electrolytic cell, and the first hydrogen separator and the first oxygen separator are respectively connected with the alkaline electrolytic cell. The second electrolyte circulating pump is connected to the alkaline electrolytic cell and the heat exchanger, respectively.
In an alternative embodiment, as also shown in FIG. 1, the above-described PEM electrolytic hydrogen production apparatus comprises: a second direct current-direct current converter (DC/DC converter), a PEM electrolyzer, a second electrolyte circulation pump, a second hydrogen separator, a second oxygen separator, wherein: the second direct current-direct current converter is respectively connected with the direct current bus and the PEM electrolytic cell, the second hydrogen separators are respectively connected with the PEM electrolytic cell, and the second oxygen separators are connected with the PEM electrolytic cell; the second electrolyte circulating pump is respectively connected with the PEM electrolytic tank and the heat exchanger.
As another alternative embodiment, the PEM electrolytic hydrogen production apparatus described above comprises: a second direct current-direct current converter (DC/DC converter) of the PEM electrolyzer, a second electrolyte circulating pump, a second hydrogen separator and a second oxygen separator. The second DC-DC converter is connected with the DC bus and the PEM electrolyzer. The second hydrogen separator and the second oxygen separator are respectively connected with the PEM electrolytic tank. The second electrolyte circulating pump is respectively connected with the PEM electrolytic tank and the heat exchanger.
In an alternative embodiment, the first dc-dc converter and the second dc-dc converter are boost chopper-buck chopper parallel interleaved converters, such as boost-buck parallel interleaved converters; the device is a power triode, a metal oxide semiconductor field effect transistor or an insulated gate bipolar transistor.
In an optional embodiment, the dc bus is connected to a dc microgrid, wherein the dc microgrid is connected through a dc converter in wind power generation, photovoltaic power generation or wind-solar hybrid power generation.
In an optional design, the direct current bus is connected with a direct current microgrid which is connected with wind power generation, photovoltaic power generation or wind-solar hybrid power generation through direct current conversion.
In an alternative embodiment, the rated capacity of the alkaline electrolyzer is a first predetermined proportion of the rated capacity for accessing new energy for power generation, and the rated capacity of the PEM electrolyzer is a second predetermined proportion of the rated capacity for accessing new energy for power generation.
Optionally, the first predetermined ratio is 80%, and the second predetermined ratio is 20%.
In order to utilize the output power of the new energy power generation to the maximum extent and consider the hydrogen production working power range, overload capacity, start-stop response and device cost of the alkaline electrolytic hydrogen production device and the PEM electrolytic hydrogen production device, in the embodiment of the application, the rated capacity of the alkaline electrolytic hydrogen production device is 80% of the rated capacity of the new energy power generation device, and the rated capacity of the PEM electrolytic hydrogen production device is 20% of the rated capacity of the new energy power generation device.
Optionally, the control unit is connected to the alkaline electrolytic hydrogen production device, the PEM electrolytic hydrogen production device and the heat exchanger, respectively, and in one possible design, the heat exchanger has a heat storage function.
Optionally, in this embodiment of the present application, the control unit is configured to monitor the power input of the DC bus, switch in or switch out the alkaline electrolyzer and the PEM electrolyzer through the alkaline electrolyzer DC/DC converter and the PEM electrolyzer DC/DC converter according to a change in the input power, and adjust the hydrogen production power supply adapted to the input power of the new energy source.
In an optional embodiment, the control unit is further configured to control the alkaline electrolytic hydrogen production device to be in a standby state when it is detected that the input power is lower than a second predetermined proportion of the new energy power generation rated capacity, wherein a PEM electrolyte in the PEM electrolytic hydrogen production device supplies heat to the alkaline electrolyte in the alkaline electrolytic hydrogen production device through a heat exchanger to increase the starting speed of the alkaline electrolyzer.
In the above alternative embodiment, the PEM electrolytic hydrogen production device is only switched on when the input power of the new energy source is detected to be lower than 20% of the rated capacity, and the alkaline electrolytic hydrogen production device is in a standby state. In addition, the PEM electrolyte provides heat to the alkaline electrolyte through a heat exchanger to increase the start-up speed of the alkaline cell.
In an optional embodiment, the control unit is further configured to, when it is detected that the input power exceeds a second predetermined proportion of a new energy power generation rated capacity and is lower than a first predetermined proportion of the new energy power generation rated capacity, control the heat exchanger to be connected to the alkaline electrolytic hydrogen production device to gradually reduce the voltage of the PEM electrolytic hydrogen production device to a maintenance voltage, so that the PEM electrolytic hydrogen production device is in a standby state, wherein an alkaline electrolyte in the alkaline electrolytic hydrogen production device supplies heat to a PEM electrolyte in the PEM electrolytic hydrogen production device through the heat exchanger, so as to increase the starting speed of the PEM electrolytic cell.
In the above optional embodiment, when it is detected that the input power of the new energy exceeds 20% of the rated capacity and is lower than 80% of the rated capacity, the alkaline electrolytic hydrogen production device is switched in, and the voltage of the PEM electrolytic hydrogen production device is gradually reduced to the maintaining voltage, so that the PEM electrolytic hydrogen production device is in a standby state. In addition, the alkaline electrolyte provides heat to the PEM electrolyte through a heat exchanger to increase the startup speed of the PEM electrolyzer.
In an optional embodiment, the control unit is further configured to gradually start the PEM electrolytic hydrogen production device under the condition that the heat exchanger is connected to the alkaline electrolytic hydrogen production device when the input power is detected to increase and exceed a first predetermined proportion of the new energy power generation rated capacity, wherein the alkaline electrolyte in the alkaline electrolytic hydrogen production device and the PEM electrolyte in the PEM electrolytic hydrogen production device dissipate heat through the heat exchanger and heat storage is started by using the heat exchanger.
In the above alternative embodiment, when the increase of the new energy input power is detected to exceed 80% of the rated capacity, the PEM electrolytic hydrogen production device is gradually started under the condition that the alkaline electrolytic hydrogen production device is connected. In addition, the alkaline electrolyte and the PEM electrolyte dissipate heat through heat exchangers that begin to store heat to provide heat to the electrolyzer at a later low temperature or on start-up.
In an alternative embodiment, the control unit is further configured to gradually switch off the PEM electrolytic hydrogen production device when the decrease of the input power is detected, and the input power is lower than a first predetermined proportion of the new energy power generation rated capacity and higher than a second predetermined proportion of the new energy power generation rated capacity, and then control the PEM electrolytic hydrogen production device to be in a standby state, wherein the alkaline electrolyte in the alkaline electrolytic hydrogen production device provides heat for the PEM electrolyte in the PEM electrolytic hydrogen production device through the heat exchanger so as to improve the starting speed of the PEM electrolytic cell.
In the above alternative embodiment, when the input power of the new energy source is detected to be reduced, and is lower than 80% of the rated capacity and higher than 20% of the rated capacity, the PEM electrolytic hydrogen production device is gradually switched out, the alkaline electrolytic hydrogen production device is switched in, and then the PEM electrolytic hydrogen production device is in a standby state. In addition, the alkaline electrolyte provides heat to the PEM electrolyte through a heat exchanger to increase the startup speed of the PEM electrolyzer.
In an optional embodiment, the control unit is further configured to, when it is detected that the input power is reduced and the input power is lower than a second predetermined proportion of the new energy power generation rated capacity, switch in the PEM electrolytic hydrogen production device and gradually reduce the voltage of the alkaline electrolytic hydrogen production device to a holding voltage, so that the alkaline electrolytic hydrogen production device is in a standby state, wherein a PEM electrolyte in the PEM electrolytic hydrogen production device is used to provide heat for the heat exchanger, and the PEM electrolyte in the PEM electrolytic hydrogen production device is used to provide heat for the alkaline electrolyte in the alkaline electrolytic hydrogen production device through the heat exchanger, so as to increase the starting speed of the alkaline electrolyzer.
In the above optional embodiment, when it is detected that the input power of the new energy source is reduced to below 20% of the rated capacity, the PEM electrolytic hydrogen production device is switched on, and the voltage of the alkaline electrolytic hydrogen production device is gradually reduced to the maintaining voltage, so that the alkaline electrolytic hydrogen production device is in a standby state. In addition, the heat exchanger provides heat from the PEM electrolyte and to the alkaline electrolyte to increase the start-up speed of the alkaline cell.
According to the embodiment of the application, the heat exchanger is adopted to provide starting heat for another type of electrolytic cell by utilizing heat exchange when any type of electrolytic cell is started; when the two types of electrolytic tanks are opened, the heat exchangers start to store heat, and provide heat at low temperature or during starting, so that the starting speed can be obviously increased, the system cannot be stopped, frequent starting and stopping of the system caused by fluctuation type power input is effectively avoided, the change of hydrogen and oxygen concentration cannot be influenced, and the yield, the quality and continuous and safe production of hydrogen are ensured.
Example 2
In accordance with an embodiment of the present invention, there is provided an embodiment of a method for controlling an apparatus for producing hydrogen by electrolyzing water, wherein the steps illustrated in the flowchart of the figure may be performed in a computer system such as a set of computer executable instructions, and wherein although a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than that illustrated herein.
The water electrolysis hydrogen production device comprises a direct current bus, an alkaline electrolysis hydrogen production device, a proton exchange membrane PEM electrolysis hydrogen production device, a heat exchanger and a control unit, wherein the heat exchanger is connected with an alkaline electrolytic cell of the alkaline electrolysis hydrogen production device and a PEM electrolytic cell of the PEM electrolysis hydrogen production device, the control unit is respectively connected with the direct current bus, the alkaline electrolysis hydrogen production device, the PEM electrolysis hydrogen production device and the heat exchanger, fig. 2 is a flow chart of a control method of the water electrolysis hydrogen production device according to an embodiment of the invention, and as shown in fig. 2, the method comprises the following steps:
step S102, when detecting that any one of the alkaline electrolytic cell and the PEM electrolytic cell is opened, controlling the heat exchanger to provide starting heat for the other electrolytic cell in a heat exchange manner; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, controlling the heat exchanger to store heat so as to provide heat when the electrolytic water hydrogen production device is at low temperature or is started;
and step S104, when the input power change of the direct current bus is detected, switching in or switching out an alkaline electrolytic cell by adopting the alkaline electrolysis device and switching in or switching out a PEM electrolytic cell by adopting the PEM electrolysis device so as to adjust the hydrogen production power supply power matched with the input power.
In the embodiment of the invention, when any one of the alkaline electrolytic cell and the PEM electrolytic cell is detected to be opened, the heat exchanger is controlled to provide starting heat for the other electrolytic cell in a heat exchange manner; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, controlling the heat exchanger to store heat so as to provide heat when the electrolytic water hydrogen production device is at low temperature or is started; when the input power change of the direct current bus is detected, the alkaline electrolysis device is connected into or switched out of the alkaline electrolysis cell, and the PEM electrolysis device is connected into or switched out of the PEM electrolysis cell to adjust the hydrogen production power supply power adaptive to the input power, so that the aim of compensating the full-power operation of the PEM electrolysis cell under the condition of avoiding power consumption of the hydrogen production device in the full-power range under the condition of fluctuating input power is fulfilled, and the technical effect of effectively avoiding frequent start-stop of the hydrogen production device caused by fluctuating power input is realized by adjusting the hydrogen production power supply power of the hydrogen production device by electrolyzing water to be adaptive to the fluctuating new energy power generation power, thereby solving the technical problem that the alkaline water electrolysis cell in the hydrogen production device in the prior art cannot operate under the condition of low power.
The water electrolysis hydrogen production device in the prior art is difficult to adjust the hydrogen production power supply power in real time and is optionally matched with the fluctuating new energy power generation power.
Optionally, the direct current bus is connected to new energy equipment, and the input power of the direct current bus is the input power of the new energy equipment to the water electrolysis hydrogen production device.
In an alternative embodiment, the heat exchanger is connected with the alkaline electrolysis cell and the PEM electrolysis cell, and the heat exchanger is a common part of the alkaline electrolysis hydrogen production device and the PEM electrolysis hydrogen production device, so that the number of used heat exchange devices is reduced, and the production and maintenance cost is reduced. The heat exchanger is used for exchanging heat to provide starting heat for another type of electrolytic cell when the electrolytic cell of any type is started; when both types of cells are turned on, the heat exchanger begins to store heat and provide heat at low temperature or at start-up.
Through the embodiment of the application, the starting speed can be obviously improved, the system can not be stopped, the frequent start and stop of the water electrolysis hydrogen production device caused by fluctuation type power input can be effectively avoided, the change of hydrogen and oxygen concentration can not be influenced, and the yield, the quality and the continuous and safe production of the hydrogen can be ensured.
It should be noted that the method for controlling the apparatus for producing hydrogen by electrolyzing water provided in this embodiment can be implemented or realized in any of the above-mentioned alternative or preferred apparatuses for producing hydrogen by electrolyzing water.
In addition, it should be noted that, for alternative or preferred embodiments of the present embodiment, reference may be made to the relevant description in embodiment 1, and details are not described herein again.
Example 3
According to an embodiment of the present invention, there is also provided an apparatus embodiment for implementing the control method of the water electrolysis hydrogen production apparatus, where the water electrolysis hydrogen production apparatus includes a direct current bus, an alkaline electrolysis hydrogen production apparatus, a proton exchange membrane PEM electrolysis hydrogen production apparatus, a heat exchanger and a control unit, the heat exchanger is connected to an alkaline electrolyzer of the alkaline electrolysis hydrogen production apparatus and to a PEM electrolyzer of the PEM electrolysis hydrogen production apparatus, and the control unit is respectively connected to the direct current bus, the alkaline electrolysis hydrogen production apparatus, the PEM electrolysis hydrogen production apparatus and the heat exchanger, fig. 3 is a schematic structural diagram of a control apparatus of a water electrolysis hydrogen production apparatus according to an embodiment of the present invention, and as shown in fig. 3, the control apparatus of the water electrolysis hydrogen production apparatus includes: a first control module 30 and a second control module 32, wherein:
a first control module 30, for controlling the heat exchanger to provide starting heat for the other electrolyzer by adopting a heat exchange mode when detecting that any one of the alkaline electrolyzer and the PEM electrolyzer is opened; and when the alkaline electrolytic cell and the PEM electrolytic cell are both opened, controlling the heat exchanger to store heat so as to provide heat when the electrolytic water hydrogen production device is at low temperature or is started;
and the second control module 32 is used for switching in or out the alkaline electrolytic cell by adopting the alkaline electrolyzer and switching in or out the PEM electrolytic cell by adopting the PEM electrolyzer when detecting the input power change of the direct current bus so as to adjust the hydrogen production power supply power adaptive to the input power.
It should be noted that the above modules may be implemented by software or hardware, for example, for the latter, the following may be implemented: the modules can be located in the same processor; alternatively, the modules may be located in different processors in any combination.
It should be noted that the first control module 30 and the second control module 32 correspond to steps S102 to S104 in embodiment 2, and the modules are the same as the corresponding steps in the implementation example and application scenarios, but are not limited to the disclosure in embodiment 1. It should be noted that the modules described above may be implemented in a computer terminal as part of an apparatus.
It should be noted that, reference may be made to the relevant description in embodiment 1 for alternative or preferred embodiments of this embodiment, and details are not described here again.
The control device of the hydrogen production device by electrolyzing water may further include a processor and a memory, the first control module 30, the second control module 32, and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls a corresponding program unit from the memory, wherein one or more than one kernel can be arranged. The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
According to an embodiment of the present application, there is also provided an embodiment of a non-volatile storage medium. Optionally, in this embodiment, the non-volatile storage medium includes a stored program, and the apparatus in which the non-volatile storage medium is located is controlled to execute any one of the above control methods of the hydrogen production apparatus by electrolyzing water when the program runs.
Optionally, in this embodiment, the nonvolatile storage medium may be located in any one of a group of computer terminals in a computer network, or in any one of a group of mobile terminals, and the nonvolatile storage medium includes a stored program.
Optionally, the apparatus in which the non-volatile storage medium is controlled to perform the following functions when the program is executed: when any one of the alkaline electrolytic cell and the PEM electrolytic cell is detected to be opened, controlling the heat exchanger to provide starting heat for the other electrolytic cell in a heat exchange manner; and when the alkaline electrolysis cell and the PEM electrolysis cell are both opened, controlling the heat exchanger to store heat so as to provide heat when the water electrolysis hydrogen production device is at low temperature or started; and when the input power change of the direct current bus is detected, the alkaline electrolyzer is switched in or out by adopting the alkaline electrolyzer, and the PEM electrolyzer is switched in or out by adopting the PEM electrolyzer, so that the hydrogen production power supply power matched with the input power is adjusted.
According to an embodiment of the present application, there is also provided an embodiment of a processor. Alternatively, in this embodiment, the processor is configured to execute a program, wherein the program executes any one of the control methods of the hydrogen production apparatus by electrolyzing water.
According to an embodiment of the present application, there is further provided an embodiment of an electronic device, which includes a memory and a processor, where the memory stores a computer program, and the processor is configured to execute the computer program to execute any one of the above methods for controlling an apparatus for producing hydrogen by electrolyzing water.
There is also provided, in accordance with an embodiment of the present application, an embodiment of a computer program product, which, when executed on a data processing device, is adapted to execute a program that initializes the steps of the control method of an apparatus for producing hydrogen from electrolytic water of any of the above.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable non-volatile storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a non-volatile storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned nonvolatile storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (14)

1. The water electrolysis hydrogen production device is characterized by comprising a direct current bus, an alkaline electrolysis hydrogen production device, a proton exchange membrane PEM electrolysis hydrogen production device, a heat exchanger and a control unit, wherein:
the heat exchanger is connected with the alkaline electrolytic cell of the alkaline electrolytic hydrogen production device and the PEM electrolytic cell of the PEM electrolytic hydrogen production device and is used for providing starting heat for the other electrolytic cell in a heat exchange mode when the opening of any one of the alkaline electrolytic cell and the PEM electrolytic cell is detected; and when both the alkaline electrolyzer and the PEM electrolyzer are opened, storing heat to provide heat when the electrolytic water hydrogen production device is at a low temperature or is started;
the control unit is respectively connected with the direct current bus, the alkaline electrolytic hydrogen production device, the PEM electrolytic hydrogen production device and the heat exchanger, and is used for switching in or out an alkaline electrolytic cell by adopting the alkaline electrolytic device and switching in or out a PEM electrolytic cell by adopting the PEM electrolytic device when monitoring the change of the input power of the direct current bus so as to adjust the hydrogen production power supply power adaptive to the input power.
2. An apparatus for producing hydrogen by electrolyzing water as recited in claim 1,
the alkaline electrolysis hydrogen production device comprises: first direct current-direct current converter, alkaline electrolysis trough, first electrolyte circulating pump, first hydrogen separator, first oxygen separator, wherein:
the first direct current-direct current converter is respectively connected with the direct current bus and the alkaline electrolytic cell, the first hydrogen separator is connected with the alkaline electrolytic cell, and the first oxygen separator is connected with the alkaline electrolytic cell; the first electrolyte circulating pump is respectively connected with the alkaline electrolytic tank and the heat exchanger.
3. An apparatus for producing hydrogen by electrolyzing water as recited in claim 2,
the PEM electrolytic hydrogen production device comprises: second direct current-direct current converter, PEM electrolysis trough, second electrolyte circulating pump, second hydrogen separator, second oxygen separator, wherein:
the second direct current-direct current converter is respectively connected with the direct current bus and the PEM electrolytic cell, the second hydrogen separator is respectively connected with the PEM electrolytic cell, and the second oxygen separator is connected with the PEM electrolytic cell; the second electrolyte circulating pump is respectively connected with the PEM electrolytic tank and the heat exchanger.
4. An apparatus for producing hydrogen by electrolyzing water as recited in claim 3,
the first direct current-direct current converter and the second direct current-direct current converter are parallel interleaved converters of a step-up chopper and a step-down chopper, and the used devices are power triodes, metal oxide semiconductor field effect transistors or insulated gate bipolar transistors.
5. An apparatus for producing hydrogen by electrolyzing water as recited in claim 1,
the direct-current bus is connected with a direct-current microgrid, wherein the direct-current microgrid is connected with wind power generation, photovoltaic power generation or wind-solar hybrid power generation through direct current conversion.
6. An apparatus for producing hydrogen by electrolyzing water as recited in claim 1,
the rated capacity of the alkaline electrolysis device is a first preset proportion of the rated capacity of the power generation of the accessed new energy, and the rated capacity of the PEM electrolysis device is a second preset proportion of the rated capacity of the power generation of the accessed new energy.
7. An apparatus for producing hydrogen by electrolyzing water as recited in claim 1,
the control unit is further used for controlling the alkaline electrolytic hydrogen production device to be in a standby state when the input power is detected to be lower than a second preset proportion of the new energy power generation rated capacity, wherein the PEM electrolyte in the PEM electrolytic hydrogen production device supplies heat to the alkaline electrolyte in the alkaline electrolytic hydrogen production device through a heat exchanger, so that the starting speed of the alkaline electrolytic cell is increased.
8. An apparatus for producing hydrogen by electrolyzing water as recited in claim 1,
the control unit is further used for controlling the heat exchanger to be connected to the alkaline electrolytic hydrogen production device to gradually reduce the voltage of the PEM electrolytic hydrogen production device to a maintaining voltage when the input power is detected to increase and exceed a second preset proportion of the new energy power generation rated capacity and is lower than a first preset proportion of the new energy power generation rated capacity, so that the PEM electrolytic hydrogen production device is in a standby state, wherein the alkaline electrolyte in the alkaline electrolytic hydrogen production device supplies heat to the PEM electrolyte in the PEM electrolytic hydrogen production device through the heat exchanger, and the starting speed of the PEM electrolytic cell is increased.
9. An apparatus for producing hydrogen by electrolyzing water as recited in claim 1,
the control unit is further used for gradually starting the PEM electrolytic hydrogen production device under the condition that the heat exchanger is connected to the alkaline electrolytic hydrogen production device when the input power is detected to be increased and exceeds a first preset proportion of the rated capacity of new energy power generation, wherein the alkaline electrolyte in the alkaline electrolytic hydrogen production device and the PEM electrolyte in the PEM electrolytic hydrogen production device dissipate heat through the heat exchanger and heat storage is started by adopting the heat exchanger.
10. An apparatus for producing hydrogen by electrolyzing water as recited in claim 1,
the control unit is further used for gradually switching off the PEM hydrogen electrolysis production device when the input power is detected to be reduced and the input power is lower than a first preset proportion of the new energy power generation rated capacity and higher than a second preset proportion of the new energy power generation rated capacity, and then controlling the PEM hydrogen electrolysis production device to be in a standby state, wherein the alkaline electrolyte in the alkaline hydrogen electrolysis production device supplies heat to the PEM electrolyte in the PEM hydrogen electrolysis production device through the heat exchanger so as to improve the starting speed of the PEM electrolytic cell.
11. An apparatus for producing hydrogen by electrolyzing water as recited in claim 1,
and the control unit is also used for switching in the PEM electrolytic hydrogen production device and gradually reducing the voltage of the alkaline electrolytic hydrogen production device to a maintaining voltage to enable the alkaline electrolytic hydrogen production device to be in a standby state when the input power is detected to be reduced and is lower than a second preset proportion of the new energy power generation rated capacity, wherein a PEM electrolyte in the PEM electrolytic hydrogen production device is used for providing heat for the heat exchanger, and the PEM electrolyte in the PEM electrolytic hydrogen production device is used for providing heat for the alkaline electrolyte in the alkaline electrolytic hydrogen production device through the heat exchanger to improve the starting speed of the alkaline electrolytic cell.
12. A control method of a water electrolysis hydrogen production device is characterized in that the water electrolysis hydrogen production device comprises a direct current bus, an alkaline electrolysis hydrogen production device, a proton exchange membrane PEM electrolysis hydrogen production device, a heat exchanger and a control unit, wherein the heat exchanger is connected with an alkaline electrolytic cell of the alkaline electrolysis hydrogen production device and a PEM electrolytic cell of the PEM electrolysis hydrogen production device, and the control unit is respectively connected with the direct current bus, the alkaline electrolysis hydrogen production device, the PEM electrolysis hydrogen production device and the heat exchanger, wherein:
when any one of the alkaline electrolytic cell and the PEM electrolytic cell is detected to be opened, controlling the heat exchanger to provide starting heat for the other electrolytic cell in a heat exchange manner; and when both the alkaline electrolyzer and the PEM electrolyzer are on, controlling the heat exchanger to store heat to provide heat when the electrolytic water hydrogen production device is at a low temperature or is started;
and when the input power change of the direct current bus is detected, switching in or switching out an alkaline electrolytic cell by using the alkaline electrolysis device and switching in or switching out a PEM electrolytic cell by using the PEM electrolysis device so as to adjust the hydrogen production power supply power matched with the input power.
13. A non-volatile storage medium storing a plurality of instructions adapted to be loaded by a processor and executed to perform the method of controlling an apparatus for producing hydrogen from electrolyzed water as claimed in claim 12.
14. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to execute the method for controlling an apparatus for producing hydrogen by electrolyzing water according to claim 12.
CN202110694839.XA 2021-06-22 2021-06-22 Water electrolysis hydrogen production device, control method of water electrolysis hydrogen production device and electronic equipment Pending CN113445062A (en)

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