CN213425790U - Renewable energy hydrogen production system - Google Patents
Renewable energy hydrogen production system Download PDFInfo
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- CN213425790U CN213425790U CN202021873646.8U CN202021873646U CN213425790U CN 213425790 U CN213425790 U CN 213425790U CN 202021873646 U CN202021873646 U CN 202021873646U CN 213425790 U CN213425790 U CN 213425790U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Abstract
The utility model provides a renewable energy hydrogen production system, the electric energy output by the renewable energy power generation system is stored in a corresponding energy storage module through a power module, and another energy storage module can provide hydrogen production electric energy for a hydrogen production tank system through a first DC/DC converter; furthermore, through the buffer function of the energy storage module, the hydrogen production electric energy received by the hydrogen production tank system can not change along with the change of the power generation power of the renewable energy power generation system, so that the problems of hydrogen production fluctuation caused by the fluctuation of the output electric energy of the renewable energy power generation system and short service life of the hydrogen production tank system are avoided; and the number of the energy storage modules is more than 1, so that when the energy storage modules provide hydrogen production electric energy through the first DC/DC converter, other energy storage modules can receive electric energy output by the renewable energy power generation system through the power supply module, and energy waste is avoided.
Description
Technical Field
The utility model belongs to the technical field of hydrogen manufacturing, more specifically say, especially, relate to a renewable energy hydrogen manufacturing system.
Background
In the existing renewable energy hydrogen production system, a renewable energy power generation system provides hydrogen production electric energy for a hydrogen production tank system; due to the instability of the renewable energy power generation system, namely the fluctuation of the hydrogen production electric energy provided by the renewable energy power generation system for the hydrogen production tank system, the hydrogen production capacity of the hydrogen production tank system is unstable, and the downstream gas utilization is influenced; if the fluctuation range is large, the hydrogen production tank system can be started and stopped frequently, and the service life of the hydrogen production tank system is influenced; in addition, if the renewable energy hydrogen production system is matched with an alkaline electrolytic cell, the alkaline electrolytic cell has slow reaction, and if the renewable energy power generation system has large fluctuation, the alkaline electrolytic cell cannot keep up with the change of the renewable energy power generation system, so that partial electric energy is wasted; therefore, in the prior art, the problems of unstable hydrogen production capacity of the hydrogen production tank system, shortened service life of the hydrogen production tank system and energy waste exist due to load fluctuation of the renewable energy power generation system.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a renewable energy hydrogen production system to avoid the unstable, short service life and the extravagant problem of energy of hydrogen production tank system among the prior art.
The utility model discloses a renewable energy hydrogen production system, include: the system comprises a renewable energy power generation system, a power module, a first DC/DC converter, a hydrogen production tank system and at least two energy storage modules; wherein:
the output end of the renewable energy power generation system is connected with the input end of the power module;
the output end of the power supply module is connected with each energy storage module through a corresponding charging branch circuit;
each energy storage module is also connected with the input end of the first DC/DC converter through a corresponding discharging branch circuit;
the output end of the first DC/DC converter is connected with the input end of the hydrogen production tank system.
Optionally, when the power module works normally, there is at least one energy storage module whose stored electric quantity does not meet the output requirement, and the charging branch connected to the energy storage module is in a conducting state.
Optionally, when the power module works normally, there is at least one energy storage module whose stored electric quantity meets the output requirement, and the discharge branch connected to the energy storage module is in a conducting state.
Optionally, the output requirement is that the stored electricity amount has reached a rated capacity.
Optionally, the charging branch and the discharging branch are both provided with controllable switches.
Optionally, the method further includes: an energy manager;
the first DC/DC converter, each energy storage module and all the controllable switches are controlled by the energy manager.
Optionally, the renewable energy power generation system includes: a photovoltaic power generation system, and/or a wind power generation system.
Optionally, when the renewable energy power generation system comprises the photovoltaic power generation system, the power module comprises a second DC/DC converter connected to the photovoltaic power generation system;
when the renewable energy power generation system comprises the wind power generation system, the power supply module comprises an AC/DC converter connected to the wind power generation system.
Optionally, the method further includes: a hydrogen system and an oxygen system;
the gas inlet of the hydrogen system is connected with the hydrogen outlet of the hydrogen production tank system;
and the air inlet of the oxygen system is connected with the oxygen outlet of the hydrogen production tank system.
Optionally, the hydrogen production tank system is at least one of an alkaline electrolyzer system and a PEM (proton exchange Membrane) electrolyzer system.
According to the technical scheme, the hydrogen production system by renewable energy provided by the utility model comprises a renewable energy power generation system, a power module, a first DC/DC converter, a hydrogen production tank system and at least two energy storage modules; the electric energy output by the renewable energy power generation system is stored in the corresponding energy storage module through the power supply module, and in addition, the other energy storage module can provide hydrogen production electric energy for the hydrogen production tank system through the first DC/DC converter; furthermore, through the buffer function of the energy storage module, the hydrogen production electric energy received by the hydrogen production tank system can not change along with the change of the power generation power of the renewable energy power generation system, so that the problems of hydrogen production fluctuation caused by the fluctuation of the output electric energy of the renewable energy power generation system and short service life of the hydrogen production tank system are avoided; and the number of the energy storage modules is more than 1, so that when the energy storage modules provide hydrogen production electric energy through the first DC/DC converter, other energy storage modules can receive electric energy output by the renewable energy power generation system through the power supply module, and energy waste is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a renewable energy hydrogen production system provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of another renewable energy hydrogen production system provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of another renewable energy hydrogen production system provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of another renewable energy hydrogen production system provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram of another renewable energy hydrogen production system provided by an embodiment of the present invention;
fig. 6 is a schematic diagram of another renewable energy hydrogen production system provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the utility model provides a renewable energy hydrogen manufacturing system for there is renewable energy power generation system's load fluctuation among the solution prior art, make hydrogen production tank system's hydrogen production volume unstable, shorten hydrogen production tank system's life and the extravagant problem of energy.
The renewable energy hydrogen production system, as shown in fig. 1, includes: renewable energy power generation system 10, power module 20, first DC/DC converter 40, hydrogen production tank system 50, and at least two energy storage modules 30; wherein:
the output terminal of the renewable energy power generation system 10 is connected to the input terminal of the power module 20 so that the generated power of the renewable energy power generation system 10 can be transmitted to the power module 20.
The output end of the power module 20 is connected to each energy storage module 30 through a corresponding charging branch, so that the power module 20 can transmit the received electric energy output by the renewable energy power generation system 10 to the corresponding energy storage module 30 through the corresponding charging branch after converting the received electric energy.
Each energy storage module 30 is also connected to an input of the first DC/DC converter 40 via a respective discharge branch, so that the respective energy storage module 30 can output supply power to the first DC/DC converter 40.
The energy storage module 30 comprises at least one energy storage battery, and when the number of the energy storage batteries is 1, the positive and negative electrodes of the energy storage battery are used as the positive and negative electrodes for charging and discharging the energy storage module 30; when the number of the energy storage batteries is at least 2, the energy storage batteries are sequentially connected in series in a mode that the positive electrode is connected with the negative electrode, and the positive electrode and the negative electrode after being connected in series are used as the positive electrode and the negative electrode for charging and discharging the energy storage module 30. The energy storage module 30 further includes at least one battery management system for detecting electric quantity information thereof, controlling on/off of internal switches of the positive electrode and the negative electrode thereof, and realizing self protection.
The output of first DC/DC converter 40 is connected to an input of hydrogen-producing tank system 50 such that first DC/DC converter 40 can provide hydrogen-producing electrical energy to hydrogen-producing tank system 50.
Specifically, the energy storage module 30 stores the generated electric energy of the renewable energy power generation system 10 through the power module 20, and then supplies the stored electric energy to the hydrogen production tank system 50 through the first DC/DC converter 40. No matter what range the generated power of renewable energy power generation system 10 is, the electric energy output by the renewable energy power generation system can be selectively stored in at least one energy storage module 30, and meanwhile, another energy storage module 30 can provide stable hydrogen production electric energy for hydrogen production tank system 50, and the electric energy received by hydrogen production tank system 50 can not change along with the change of the generated power of renewable energy power generation system 10 through the buffer function of energy storage module 30.
Due to the buffering function of the energy storage module 30, the hydrogen production electric energy received by the hydrogen production tank system 50 does not change along with the change of the power generation power of the renewable energy power generation system 10, so that the hydrogen production amount of the hydrogen production tank system 50 does not have larger fluctuation in the prior art, and the service life is not influenced by frequent startup and shutdown; moreover, the number of the energy storage modules 30 is greater than 1, so that while the energy storage modules 30 provide hydrogen production electric energy through the first DC/DC converter 40, other energy storage modules 30 can receive electric energy output by the renewable energy power generation system 10 through the power module 20, thereby avoiding energy waste.
In practical applications, when the power module 20 works normally, at least one energy storage module 30 whose stored electric quantity does not meet the output requirement exists, and the charging branch connected to the energy storage module 30 is in a conducting state, so that the energy storage module 30 whose stored electric quantity does not meet the output requirement can receive the output electric energy of the renewable energy power generation system 10 through the power module 20.
Meanwhile, when the power module 20 works normally, at least one energy storage module 30 with the stored electric quantity meeting the output requirement exists, and the discharge branch connected with the energy storage module 30 is in a conducting state, so that the energy storage module 30 with the stored electric quantity meeting the output requirement can provide hydrogen production electric energy for the hydrogen production tank system 50 through the first DC/DC converter 40.
In practical applications, the output requirement is that the stored charge has reached the rated capacity. Specifically, the energy storage module 30 with the stored electric quantity reaching the rated capacity is the energy storage module 30 with the stored electric quantity meeting the output requirement; the energy storage module 30 whose storage capacity does not reach the rated capacity is the energy storage module 30 whose storage capacity does not meet the output requirement.
Of course, the output requirement may also be that the stored electricity amount reaches a certain preset capacity, where the preset capacity is a value smaller than the rated capacity, such as 80% or 90% of the rated capacity, and is not described herein any more, and all of them are within the protection scope of the present application, depending on the actual situation.
Optionally, a controllable switch (not shown) is disposed in each of the charging branch and the discharging branch.
Taking one energy storage module 30 as an example for description, specifically, when the controllable switch on the charging branch is turned off, the connection between the corresponding energy storage module 30 and the power supply module 20 is disconnected, and the energy storage module 30 cannot receive the generated electric energy of the renewable energy power generation system 10 through the power supply module 20; when the controllable switch on the charging branch is closed, the connection between the corresponding energy storage module 30 and the power module 20 is established, and the energy storage module 30 can receive the generated electric energy of the renewable energy power generation system 10 through the power module 20. When the controllable switch on the discharging branch is turned off, the connection between the corresponding energy storage module 30 and the first DC/DC converter 40 is disconnected, and the energy storage module 30 can not provide hydrogen production electric energy for the hydrogen production tank system 50 through the first DC/DC converter 40; when the controllable switch on the charging branch is closed, the connection between the corresponding energy storage module 30 and the first DC/DC converter 40 is established, and the energy storage module 30 can provide hydrogen production electric energy for the hydrogen production tank system 50 through the first DC/DC converter 40.
Of course, the state of the controllable switch only provides a charging/discharging channel for the corresponding energy storage module 30, and whether the energy storage module 30 performs charging/discharging operation should be controlled by the control device.
In this embodiment, when the power module 20 normally works, at least one energy storage module 30 with an electric storage quantity that does not meet the output requirement receives the output electric energy of the renewable energy power generation system 10, and at least one energy storage module 30 with an electric storage quantity that meets the output requirement provides hydrogen production electric energy for the hydrogen production tank system 50, so that the output electric energy of the renewable energy power generation system 10 can be received, and the hydrogen production electric energy can be provided for the hydrogen production tank system 50; the hydrogen production electric energy received by the hydrogen production tank system 50 is stable, and the hydrogen production quantity is stable while the energy waste is avoided.
In practical applications, the controllable switch on the charging/discharging branch may be an electric quantity detection interlocking device controlled by the energy storage module 30, such as a battery management system of one energy storage module 30, and the electric quantity information output by the controllable switch is compared with a preset reference value (i.e. the above rated capacity or preset capacity), and when the electric quantity is greater than the rated capacity or preset capacity, the comparison result may directly or through a corresponding driving circuit control the self charging branch to be turned off and the discharging branch to be turned on, and the charging branch of the other energy storage module 30 to be turned on and the discharging branch to be turned off.
More preferably, however, referring to fig. 2, the renewable energy hydrogen production system further comprises: an energy manager 60.
The first DC/DC converter 40, each energy storage module 30 and all controllable switches are controlled by an energy manager 60; that is, each first DC/DC converter 40, each energy storage module 30 and all controllable switches are connected to the energy manager 30.
Specifically, the following describes a case where the first DC/DC converter 40 is controlled by the energy manager 60, a case where each energy storage module 30 is controlled by the energy manager 60, and a case where all the controllable switches are controlled by the energy manager 60, respectively:
(1) the energy manager 60 controls the on/off state of the controllable switch, that is, indirectly controls the corresponding energy storage module 30 to stop receiving/receiving the output electric energy of the renewable energy power generation system 10 through the power module 20, or indirectly controls the corresponding energy storage module 30 to stop providing/providing hydrogen production electric energy to the hydrogen production tank system 50 through the first DC/DC converter 40.
Specifically, the controllable switches on the discharging branches corresponding to the corresponding energy storage modules 30 are controlled to be closed, so that the discharging branches are controlled to be in a conducting state, and further the energy storage modules 30 can provide hydrogen production electric energy for the hydrogen production tank system 50 through the first DC/DC converter 40; the controllable switches on the discharging branches corresponding to the energy storage modules 30 are controlled to be turned off, so that the discharging branches are controlled to be in a disconnected state, and further the energy storage modules 30 can no longer provide hydrogen production electric energy for the hydrogen production tank system 50 through the first DC/DC converter 40.
The controllable switches on the charging branches corresponding to the corresponding energy storage modules 30 are controlled to be closed, so that the charging branches are controlled to be in a conducting state, and the energy storage modules 30 can receive the output electric energy of the renewable energy power generation system 10 through the power supply module 20; the controllable switch on the charging branch corresponding to the energy storage module 30 is controlled to be turned off, so as to control the charging branch to be in the off state, and further the energy storage module 30 can no longer receive the output electric energy of the renewable energy power generation system 10 through the power module 20.
It should be noted that the energy manager 60 may control the controllable switch on a corresponding charging branch in each of the energy storage modules 30 that are not fully charged to close and charge the energy storage module 30; meanwhile, the controllable switch on the discharging branch corresponding to the energy storage module 30 is kept/controlled to be turned off, after the energy storage module 30 is fully charged, the controllable switch on the charging branch is controlled to be turned off, and the controllable switch on the charging branch corresponding to another energy storage module 30 which is not fully charged is controlled to be turned on to charge the energy storage module 30; meanwhile, the controllable switch on the discharging branch corresponding to the energy storage module 30 is kept/controlled to be turned off. In practice, the possibility of charging at least two energy storage modules 30 simultaneously is not excluded.
In addition, the on-off of the controllable switches on the charging branches is controlled, and meanwhile, the on-off of the controllable switches on the discharging branches is also controlled; specifically, the energy manager 60 may control the controllable switch on the discharging branch corresponding to any energy storage module 30 whose stored electric quantity meets the output requirement to be closed, so as to provide hydrogen production electric energy for the hydrogen production tank system 50; meanwhile, the controllable switch on the charging branch corresponding to the energy storage module 30 keeps/controls off; when the energy storage module 30 can no longer provide hydrogen production electric energy for the hydrogen production tank system 50, the controllable switch on the discharging branch is controlled to be turned off, and the controllable switch on the discharging branch corresponding to the energy storage module 30 with the stored electric quantity meeting the output requirement is controlled to be turned on, so that the hydrogen production electric energy is provided for the hydrogen production tank system 50.
And the cycle repeats to charge each of the energy storage modules 30 which are not fully charged and to provide hydrogen production electric energy for the hydrogen production tank system 50. It should be noted that, since any energy storage module 30 cannot be charged and discharged simultaneously, the controllable switch on the charging branch and the controllable switch on the discharging branch corresponding to any energy storage module 30 cannot be closed simultaneously. In addition, the states of the energy storage modules 30 are switched to each other, as long as it is ensured that at least one energy storage module 30 receives the output electric energy of the renewable energy power generation system, and at least one energy storage module provides the hydrogen production electric energy for the hydrogen production tank system 50, which is not described herein any more, and is within the protection scope of the present application.
Two energy storage modules 30 and the renewable energy power generation system 10 are taken as the photovoltaic power generation system 101 for illustration: before the power module 20 starts operating, each of the controllable switches may be in an off state. When the light is emitted in the daytime, the photovoltaic power generation system 101 starts to generate power, the power module 20 starts to work, and the controllable switch on the charging branch corresponding to the first energy storage module 30 is controlled to be closed, so that the photovoltaic power generation system 101 charges the first energy storage module 30 through the power module 20; when the first energy storage module 30 finishes charging, the controllable switch on the charging branch corresponding to the first energy storage module 30 is controlled to be turned off, and the controllable switch on the discharging branch is controlled to be turned on, so that the energy storage module 30 stops receiving electric energy and starts to provide hydrogen production electric energy for the hydrogen production tank system 50; meanwhile, the controllable switch on the charging branch corresponding to the second energy storage module 30 is also controlled to be closed, so that the photovoltaic power generation system 101 charges the second energy storage module 30 through the power supply module 20; when the first energy storage module 30 discharges to the lowest electric quantity or the second energy storage module 30 is fully charged, controlling the controllable switch on the charging branch corresponding to the first energy storage module 30 to be closed and the controllable switch on the discharging branch to be turned off; meanwhile, the controllable switch on the charging branch corresponding to the second energy storage module 30 is controlled to be turned off, and the controllable switch on the discharging branch is controlled to be turned on. The cycle is repeated, and the electric energy storage of the renewable energy power generation system 10 and the stable power supply of the hydrogen production tank system 50 are considered.
(2) The energy manager 60 controls the output power of the first DC/DC converter 40, i.e., indirectly controls the hydrogen-producing electrical energy of the hydrogen-producing tank system 50. The energy manager 60 may also be communicatively coupled to the hydrogen production tank system 50, and the energy manager 60 controls the output power of the first DC/DC converter 40 according to the hydrogen production requirement output by the hydrogen production tank system 50, so that the hydrogen production electrical energy received by the hydrogen production tank system 50 matches the hydrogen production requirement.
In practical applications, the energy manager 60 controls the output power of the first DC/DC converter by controlling the on/off or on duty ratio of each switching tube in the first DC/DC converter 40.
Specifically, the energy manager 60 may determine the output power of the energy storage module 30 providing hydrogen-producing electric energy for the hydrogen-producing tank system 50, that is, the output power of the first DC/DC converter 40, according to the generated power of the renewable energy power generation system 10 and the energy storage speed of the energy storage module 30 receiving the generated power, so as to control the output power of the energy storage module 30 to the hydrogen-producing tank system 50.
The following is also illustrated by taking a total of 2 energy storage modules 30 in the renewable energy hydrogen production system as an example:
assuming that the first energy storage module 30 is discharged and the second energy storage module 30 is charged when the power supply module 20 is in normal operation, the energy manager 60 controls the output power of the first DC/DC converter 40 according to the generated power of the renewable energy power generation system 10 and the charging speed of the second energy storage module 30; therefore, the problems that the first energy storage module 30 is emptied before the second energy storage module 30 finishes charging, the controllable switch and the energy storage module 30 are shortened due to frequent switching of the energy storage module 30, and even the second energy storage module 30 and the first energy storage module 30 are emptied and hydrogen production electric energy cannot be provided for the hydrogen production tank system 50 are solved.
(3) The energy manager 60 controls the energy storage module 30 to be in an off state or a charged/discharged state; specifically, the energy manager 60 controls whether the energy storage module 30 is in an operating state by controlling the switching state at the positive and negative poles in the energy storage module 30.
In this embodiment, the energy manager 60 controls the first DC/DC converter 40, each energy storage module 30, and all the controllable switches, so that the unstable electric energy generated by the renewable energy power generation system 10 is converted into the stably output electric energy, that is, the stable operation of the hydrogen production tank system 50 is ensured, the service life of the equipment is prolonged, and the stability of the gas consumption of the downstream is ensured.
In any of the above embodiments, referring to fig. 4-6, the renewable energy power generation system 10 includes: a photovoltaic power generation system 101 (shown in FIG. 4); alternatively, the renewable energy power generation system 10 includes: a wind power generation system 102 (shown in FIG. 5); still alternatively, the renewable energy power generation system 10 includes: a photovoltaic power generation system 101 and a wind power generation system 102 (shown in fig. 6).
In practical applications, when the renewable energy power generation system 10 includes only the photovoltaic power generation system 101, the power module 20 includes a second DC/DC converter 201 connected to the photovoltaic power generation system 101; when the renewable energy power generation system 10 includes only the wind power generation system 102, the power supply module 20 includes an AC/DC converter 202 connected to the wind power generation system 102; when the renewable energy power generation system 10 includes the photovoltaic power generation system 101 and the wind power generation system 102, the power supply module 20 includes a second DC/DC converter 201 connected to the photovoltaic power generation system 101, and an AC/DC converter 202 connected to the wind power generation system 102.
Specifically, as shown in fig. 4, the output end of the photovoltaic power generation system 101 is connected as the output end of the renewable energy power generation system 10 and the input end of the power module 20, that is, the output end of the photovoltaic power generation system 101 is connected with the input end of the second DC/DC converter 201; the output of the second DC/DC converter 201 is used as the output of the power module 20 and is connected to the corresponding energy storage module 30 via the corresponding charging branch.
As shown in fig. 5, the output end of the wind power generation system 102 is connected as the output end of the renewable energy power generation system 10 and the input end of the power module 20, that is, the output end of the wind power generation system 102 is connected with the input end of the AC/DC converter 202; the output of the AC/DC converter 202 is connected as the output of the power supply module 20 to the respective energy storage module 30 via the respective charging branch.
As shown in fig. 6, the output end of the photovoltaic power generation system 101 and the output end of the wind power generation system 102 are both used as the output end of the renewable energy power generation system 10, and the output end of the photovoltaic power generation system 101 is connected with the input end of the second DC/DC converter 201; the output of the wind power generation system 102 is connected to the input of the AC/DC converter 202; the output of the second DC/DC converter 201 and the output of the AC/DC converter 202, which serve as the output of the power module 20, are connected to the respective energy storage module 30 via the respective charging branch.
In practical applications, in any of the above embodiments, referring to fig. 3, the renewable energy hydrogen production system further comprises: a hydrogen system 70 and an oxygen system 80.
The gas inlet of hydrogen system 70 is connected to the hydrogen gas outlet of hydrogen cell system 50 to enable oxygen produced by hydrogen cell system 50 to be transported to oxygen system 80.
It should be noted that the purity of the oxygen output from the hydrogen production tank system 50 is low, and the oxygen system 80 can purify the oxygen output from the hydrogen production tank system 50, and can also perform pressure boosting and the like. Of course, the oxygen system 80 may also have a storage function. The specific working principle of the oxygen system 80 is not described in detail herein, and it is sufficient to refer to the corresponding prior art for details, and all are within the scope of the present application.
The gas inlet of the oxygen system 80 is connected to the oxygen outlet of the hydrogen-producing cell system 50 to enable the hydrogen gas generated by the hydrogen-producing cell system 50 to be transported to the hydrogen system 70.
It should be noted that the purity of the hydrogen output from the hydrogen production tank system 50 generally does not meet the requirement for direct use, and the hydrogen system 70 may purify the hydrogen output from the hydrogen production tank system 50, or may perform pressure boosting or the like. Of course, the hydrogen system 70 may also have a storage function. The specific working principle of the hydrogen system 70 is not described in detail herein, and it is sufficient to refer to the corresponding prior art for details, and all are within the scope of the present application.
In practical applications, the hydrogen production cell system 50 may be an alkaline electrolyzer system; alternatively, the hydrogen-producing cell system 50 may also be a PEM electrolyzer system; still alternatively, the hydrogen-producing cell system 50 may also be a hydrogen-producing cell system 50 that is a combination of an alkaline cell system and a PEM cell system. Of course, the hydrogen production tank system 50 may be other systems, which are not described in detail herein, and are within the scope of the present application.
Features described in the embodiments in the present specification may be replaced with or combined with each other, and the same and similar portions among the embodiments may be referred to each other, and each embodiment is described with emphasis on differences from other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the 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 network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A system for producing hydrogen from renewable energy sources, comprising: the system comprises a renewable energy power generation system, a power module, a first DC/DC converter, a hydrogen production tank system and at least two energy storage modules; wherein:
the output end of the renewable energy power generation system is connected with the input end of the power module;
the output end of the power supply module is connected with each energy storage module through a corresponding charging branch circuit;
each energy storage module is also connected with the input end of the first DC/DC converter through a corresponding discharging branch circuit;
the output end of the first DC/DC converter is connected with the input end of the hydrogen production tank system.
2. The system for producing hydrogen from renewable energy source according to claim 1, wherein when the power module is in normal operation, at least one energy storage module whose stored electricity does not meet the output requirement exists, and the charging branch connected with the energy storage module is in a conducting state.
3. The system for producing hydrogen from renewable energy source according to claim 1, wherein when the power module is in normal operation, at least one energy storage module with the stored electricity satisfying the output requirement exists, and the discharge branch connected with the energy storage module is in a conducting state.
4. The system for producing hydrogen from renewable energy source as claimed in claim 2 or 3, wherein the output requirement is that the stored electricity amount has reached a rated capacity.
5. The system for producing hydrogen from renewable energy source as claimed in claim 1, wherein a controllable switch is disposed in each of the charging branch and the discharging branch.
6. The system for renewable energy hydrogen production according to claim 5, further comprising: an energy manager;
the first DC/DC converter, each energy storage module and all the controllable switches are controlled by the energy manager.
7. The system for renewable energy hydrogen production according to any one of claims 1-3 and 5-6, wherein the system for renewable energy power generation comprises: a photovoltaic power generation system, and/or a wind power generation system.
8. The system for producing hydrogen from renewable energy source of claim 7, wherein when said renewable energy power generation system comprises said photovoltaic power generation system, said power module comprises a second DC/DC converter connected to said photovoltaic power generation system;
when the renewable energy power generation system comprises the wind power generation system, the power supply module comprises an AC/DC converter connected to the wind power generation system.
9. The system for renewable energy hydrogen production according to any one of claims 1-3 and 5-6, further comprising: a hydrogen system and an oxygen system;
the gas inlet of the hydrogen system is connected with the hydrogen outlet of the hydrogen production tank system;
and the air inlet of the oxygen system is connected with the oxygen outlet of the hydrogen production tank system.
10. The renewable energy hydrogen generation system of any of claims 1-3, 5-6, wherein the hydrogen generation cell system is at least one of an alkaline cell system and a proton exchange membrane PEM cell system.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839403A (en) * | 2021-10-13 | 2021-12-24 | 河北建投新能源有限公司 | Energy storage hydrogen production control method and device, storage medium and electronic equipment |
| WO2023207201A1 (en) * | 2022-04-29 | 2023-11-02 | 阳光氢能科技有限公司 | New energy hydrogen production system and control method therefor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839403A (en) * | 2021-10-13 | 2021-12-24 | 河北建投新能源有限公司 | Energy storage hydrogen production control method and device, storage medium and electronic equipment |
| CN113839403B (en) * | 2021-10-13 | 2024-04-16 | 河北建投新能源有限公司 | Energy storage hydrogen production control method and device, storage medium and electronic equipment |
| WO2023207201A1 (en) * | 2022-04-29 | 2023-11-02 | 阳光氢能科技有限公司 | New energy hydrogen production system and control method therefor |
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Effective date of registration: 20230512 Address after: 230000 room 616, Baiyan Industrial Service Center, 188 Mingchuan Road, high tech Zone, Hefei, Anhui Province Patentee after: Sunshine Hydrogen Energy Technology Co.,Ltd. Address before: 230088 No. 1699 Xiyou Road, Hefei High-tech Zone, Anhui Province Patentee before: SUNGROW POWER SUPPLY Co.,Ltd. |