Energy management system and energy management method based on hydrogen production and hydrogen fuel cell power generation

Abstract

The invention relates to an energy management system and an energy management method based on hydrogen production and hydrogen fuel cell power generation, and relates to the technical field of water electrolysis hydrogen production. In the system, an AEM water electrolysis hydrogen production module is used for receiving power supplied by an external power supply so as to execute hydrogen production operation to produce hydrogen; the hydrogen production heat exchange unit is used for controlling cooling water in the hydrogen production heat storage unit to exchange heat with electrolyte in the AEM hydrogen production module during hydrogen production operation execution to generate first-grade hot water; the hydrogen fuel cell power generation module is used for executing power generation operation of adding hydrogen as fuel and supplying power to a load; the fuel cell heat exchange unit is used for controlling the first-grade hot water to exchange heat with cooling liquid in the hydrogen fuel cell power generation module during power generation operation execution to generate second-grade hot water; and the fuel cell heat storage unit is used for supplying second-grade hot water to the terminal. According to the embodiment, the system integrating hydrogen production and hydrogen power generation is built, the system building cost is reduced, and the energy utilization rate of the system is increased.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen production by water electrolysis, and in particular to an energy management system and an energy management method based on hydrogen production and hydrogen fuel cell power generation. Background Art

[0002] Water electrolysis hydrogen production technology is an important development direction of the current hydrogen energy industry, especially in the field of renewable energy hydrogen production. With the advancement of technology and the reduction of costs, the commercial application of water electrolysis hydrogen production has accelerated, and water electrolysis hydrogen production technology is regarded as one of the most promising hydrogen production methods. Compared with other types, AEM (Anion Exchange Membrane) water electrolysis hydrogen production technology has the advantages of low cost, environmental friendliness, high efficiency, and high safety, and is the focus of current research.

[0003] Hydrogen fuel cell power generation technology is a technology that directly converts chemical energy generated by combining hydrogen and oxygen to produce water into electrical energy. Due to its high efficiency and cleanliness, it has shown good application prospects in many fields. With the growth of global demand for renewable energy and increasing pressure to reduce carbon emissions, hydrogen fuel cell power generation technology is expected to be more widely used and developed in the next few decades.

[0004] The relevant technologies are mainly aimed at the construction of water electrolysis hydrogen production system, hydrogen storage system and hydrogen fuel cell power generation system respectively. How to combine the electricity and heat energy needs of user loads to build an energy management system integrating hydrogen production, hydrogen storage, hydrogen fuel power generation and system thermal energy management will help promote the popularization and application of water electrolysis hydrogen production and hydrogen fuel cell power generation, reduce system construction costs and improve energy utilization efficiency; at the same time, since the electrochemical reactions in the process of water electrolysis hydrogen production and hydrogen fuel cell power generation will generate a large amount of heat energy, how to achieve effective recovery and utilization of heat energy, improve the energy conversion efficiency and energy utilization rate in hydrogen production and hydrogen fuel cell power generation, and improve the overall system energy efficiency of the energy management system are issues that need to be urgently addressed.

[0005] With respect to the above-mentioned problems in the related technologies, no effective solutions have been proposed yet. Summary of the invention

[0006] An energy management system and an energy management method based on hydrogen production and hydrogen fuel cell power generation provided in an embodiment of the present invention at least solve the problem in the related art that the water electrolysis hydrogen production system and the hydrogen fuel cell power generation system are built separately, resulting in high system construction cost, low system energy utilization rate and low energy conversion efficiency, and narrow application scenarios.

[0007] In order to solve the above problems, one aspect of the embodiments of the present invention provides an energy management system based on hydrogen production and hydrogen fuel cell power generation, including: an AEM water electrolysis hydrogen production module, a first waste heat recovery module, a hydrogen storage module, a hydrogen fuel cell power generation module, and a second waste heat recovery module; wherein,

[0008] The AEM water electrolysis hydrogen production module is used to receive electric energy input from an external power source to perform water electrolysis hydrogen production operations to produce hydrogen; wherein the produced hydrogen is supplied to the hydrogen fuel cell power generation module or stored in the hydrogen storage module;

[0009] The first waste heat recovery module includes a hydrogen production heat exchange unit and a hydrogen production heat storage unit. The hydrogen production heat exchange unit is used to control the cooling water in the hydrogen production heat storage unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module during the execution of the water electrolysis hydrogen production operation to generate first-grade hot water; wherein the first-grade hot water is stored in the hydrogen production heat storage unit;

[0010] The hydrogen fuel cell power generation module is used to receive load power demand information and perform power generation operations by adding hydrogen as fuel according to the load power demand information to supply power to the load;

[0011] The second waste heat recovery module includes a fuel cell heat exchange unit and a fuel cell heat storage unit. The fuel cell heat exchange unit is used to control the first grade hot water in the hydrogen production heat storage unit to exchange heat with the coolant in the hydrogen fuel cell power generation module during the power generation operation to generate second grade hot water, and store the second grade hot water in the fuel cell heat storage unit; the fuel cell heat storage unit is used to receive terminal water demand information and supply second grade hot water to the terminal according to the terminal water demand information; wherein the temperature of the second grade hot water is higher than the temperature of the first grade hot water.

[0012] In some of the embodiments, the hydrogen storage module is used to store hydrogen produced by the AEM water electrolysis hydrogen production module, and the hydrogen storage module is also used to supply the stored hydrogen to the hydrogen fuel cell power generation module as fuel for power generation operations;

[0013] The AEM water electrolysis hydrogen production module is also used to obtain the power state of the external power supply and the hydrogen storage state of the hydrogen storage module, and to control and adjust the operating power of the water electrolysis hydrogen production operation according to the power state and the hydrogen storage state.

[0014] In some of the embodiments, the AEM water electrolysis hydrogen production module includes a plurality of AEM stacks, wherein:

[0015] The AEM water electrolysis hydrogen production module is also used to bypass the faulty AEM stack and adjust the operating power of the water electrolysis hydrogen production operation when any one or more AEM stacks encounter a fault; after the fault is repaired, the bypass operation is released and the operating power of the water electrolysis hydrogen production operation is restored.

[0016] In some of the embodiments, the system further comprises a water level management module.

[0017] The water level management module is used to achieve water level management of the hydrogen production and heat storage unit by controlling the external cooling water input and the first grade hot water discharge of the hydrogen production and heat storage unit, and to achieve water level management of the fuel cell heat storage unit by controlling the second grade hot water discharge in the fuel cell heat storage unit.

[0018] In order to solve the above problems, one aspect of an embodiment of the present invention provides an energy management method based on hydrogen production and hydrogen fuel cell power generation, which is applied to any of the above energy management systems based on hydrogen production and hydrogen fuel cell power generation, including:

[0019] The AEM water electrolysis hydrogen production module receives electric energy input from an external power source to perform water electrolysis hydrogen production operation to produce hydrogen, and the produced hydrogen is supplied to the hydrogen fuel cell power generation module or stored in the hydrogen storage module; during the water electrolysis hydrogen production operation, the cooling water in the hydrogen production heat storage unit is controlled by the hydrogen production heat exchange unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module to generate first-grade hot water, and the first-grade hot water is stored in the hydrogen production heat storage unit;

[0020] The load power demand information is received through the hydrogen fuel cell power generation module, and a power generation operation of adding hydrogen as fuel is performed according to the load power demand information to supply power to the load; during the power generation operation, the first-grade hot water in the hydrogen production and heat storage unit is controlled by the fuel cell heat exchange unit to exchange heat with the coolant in the hydrogen fuel cell power generation module to generate second-grade hot water, and the second-grade hot water is stored in the fuel cell heat storage unit; wherein the temperature of the second-grade hot water is higher than the temperature of the first-grade hot water;

[0021] The terminal water demand information is received through the fuel cell heat storage unit, and the second grade hot water is supplied to the terminal according to the terminal water demand information.

[0022] In some of these embodiments, the method further comprises:

[0023] The AEM water electrolysis hydrogen production module obtains the power state of the external power supply and the hydrogen storage state of the hydrogen storage module, and controls and adjusts the operating power of the water electrolysis hydrogen production operation according to the power state and the hydrogen storage state.

[0024] In some of the embodiments, the AEM water electrolysis hydrogen production module includes a plurality of AEM stacks, and during the water electrolysis hydrogen production operation, the method further includes:

[0025] When any one or more AEM stacks encounter a fault, the AEM water electrolysis hydrogen production module is used to bypass the faulty AEM stack and adjust the operating power of the water electrolysis hydrogen production operation; after the fault is repaired, the AEM water electrolysis hydrogen production module is used to release the bypass operation and restore the operating power of the water electrolysis hydrogen production operation.

[0026] In some of these embodiments, the method further comprises:

[0027] Before the electrolysis of water to produce hydrogen is performed, the water level management module is used to control the external cooling water to be input into the hydrogen production and heat storage unit until the first water storage position is met;

[0028] During the execution of the hydrogen production operation by electrolysis of water, the water temperature of the first grade hot water in the hydrogen production heat storage unit is monitored through the water level management module. If the water temperature of the first grade hot water is higher than the temperature threshold, the external cooling water is controlled to continue to be input into the hydrogen production heat storage unit without exceeding the second water storage position; when the water level in the hydrogen production heat storage unit is higher than the second water storage position, the first grade hot water is controlled to be discharged to the fuel cell heat storage unit through the water level management module; wherein the horizontal height of the second water storage position is higher than the horizontal height of the first water storage position.

[0029] In some of these embodiments, the method further comprises:

[0030] The water level of the second grade hot water in the fuel cell heat storage unit is monitored by the water level management module. If the actual water level of the second grade hot water is higher than the water level threshold, the fuel cell heat storage unit is controlled to discharge part of the second grade hot water until the actual water level is no higher than the water level threshold.

[0031] In some embodiments, the steps of receiving load power demand information through a hydrogen fuel cell power generation module and performing power generation operation using hydrogen as fuel according to the load power demand information include:

[0032] After receiving the load power demand information, the hydrogen demand is determined according to the load power demand information through the hydrogen fuel cell power generation module, and the hydrogen production capacity of the AEM water electrolysis hydrogen production module and the hydrogen storage capacity in the hydrogen storage module are obtained;

[0033] Generate a hydrogen output instruction based on hydrogen demand, hydrogen production and hydrogen storage, and send the hydrogen output instruction to the AEM water electrolysis hydrogen production module and / or hydrogen storage module to obtain the hydrogen fuel required to perform power generation operations and perform power generation operations.

[0034] In order to solve the above problems, one aspect of an embodiment of the present invention provides an electronic device, including: a processor, and a memory storing a program, wherein the program includes instructions, and when the instructions are executed by the processor, the processor executes any one of the above energy management methods.

[0035] In order to solve the above problems, one aspect of an embodiment of the present invention provides a non-transitory machine-readable medium storing computer instructions, where the computer instructions are used to enable a computer to execute any one of the above energy management methods.

[0036] Beneficial effects of the embodiments of the present invention: by providing an energy management system including an AEM water electrolysis hydrogen production module, a first waste heat recovery module, a hydrogen storage module, a hydrogen fuel cell power generation module, and a second waste heat recovery module; wherein the AEM water electrolysis hydrogen production module is used to receive electric energy input from an external power source to perform water electrolysis hydrogen production operation to produce hydrogen; wherein the produced hydrogen is supplied to the hydrogen fuel cell power generation module or stored in the hydrogen storage module; the first waste heat recovery module includes a hydrogen production heat exchange unit and a hydrogen production heat storage unit, and the hydrogen production heat exchange unit is used to control the cooling water in the hydrogen production heat storage unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module during the execution of the water electrolysis hydrogen production operation to generate first-grade hot water; wherein the first-grade hot water is stored in The hydrogen production and heat storage unit is used for receiving load power demand information, and performing power generation operation using hydrogen as fuel according to the load power demand information to supply power to the load; the second waste heat recovery module includes a fuel cell heat exchange unit and a fuel cell heat storage unit, and the fuel cell heat exchange unit is used for controlling the first grade hot water in the hydrogen production and heat storage unit to exchange heat with the coolant in the hydrogen fuel cell power generation module during the power generation operation to generate second grade hot water, and store the second grade hot water in the fuel cell heat storage unit; the fuel cell heat storage unit is used for receiving terminal water demand information, and supplying second grade hot water to the terminal according to the terminal water demand information; wherein the temperature of the second grade hot water is higher than the temperature of the first grade hot water. The invention overcomes the problem in related technologies that the water electrolysis hydrogen production system, hydrogen storage system and hydrogen fuel cell power generation system are built separately, resulting in high system construction cost, low system energy conversion efficiency and energy utilization rate, which is not conducive to promoting the promotion and application of water electrolysis hydrogen production and hydrogen fuel cell power generation. It realizes the construction of an energy management system integrating water electrolysis hydrogen production, hydrogen storage, hydrogen fuel power generation and system thermal energy management, reducing the overall system construction cost. The heat energy in the water electrolysis hydrogen production process is recovered for the first time based on the first waste heat recovery module, and the heat energy in the hydrogen fuel cell power generation process is recovered for the second time based on the second waste heat recovery module. The second-grade hot water obtained can also be supplied to user terminals, further improving the system energy utilization rate, enhancing user experience, effectively promoting the promotion and application of water electrolysis hydrogen production technology and hydrogen fuel cell power generation technology, and expanding the technical effect of application scenarios.

[0037] The details of one or more embodiments of the invention are set forth in the following drawings and description so that other features, objects, and advantages of the invention are more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other embodiments can be obtained based on these drawings without creative work.

[0039] Figure 1 It is a schematic diagram of the main framework of an energy management system according to an embodiment of the present invention.

[0040] Figure 2 It is a main flow chart of an energy management method according to an embodiment of the present invention.

[0041] Figure 3 It is a schematic diagram of a flow chart of performing water electrolysis hydrogen production operation based on an AEM water electrolysis hydrogen production module according to an embodiment of the present invention.

[0042] Figure 4 It is a schematic diagram of the operation of a hydrogen storage module according to an embodiment of the present invention.

[0043] Figure 5 It is a schematic flow chart of heat energy recovery in the operation of producing hydrogen by electrolysis of water according to an embodiment of the present invention.

[0044] Figure 6 One embodiment of the present invention is directed to heat recovery in power generation operations.

[0045] Figure 7 It is a structural schematic diagram of the electronic device of the present invention. DETAILED DESCRIPTION

[0046] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0047] The relevant technologies are mainly built for the water electrolysis hydrogen production system and the hydrogen fuel cell power generation system respectively. Since the electrochemical reactions in the water electrolysis hydrogen production process and the hydrogen fuel cell power generation process will generate a large amount of heat energy loss and other types of energy loss, the current energy conversion efficiency of electricity to hydrogen energy in the water electrolysis hydrogen production system at home and abroad is about 70%; the energy conversion efficiency of hydrogen energy to electricity in the hydrogen fuel cell power generation system is about 50%, which is significantly lower than the theoretical energy conversion efficiency value. Therefore, how to build an energy management system to fully absorb and store the heat energy in the water electrolysis hydrogen production process and the hydrogen fuel power generation process while realizing the water electrolysis hydrogen production, hydrogen storage, and hydrogen fuel power generation to supply power to the user load, improve the system energy utilization rate and energy conversion efficiency, and help promote the promotion and application of water electrolysis hydrogen production and hydrogen fuel cell power generation, and enhance user experience.

[0048] In order to solve the above problems, the embodiment of the present invention provides an energy management system based on hydrogen production and hydrogen fuel cell power generation, such as Figure 1 As shown, the energy management system 100 mainly includes: an AEM water electrolysis hydrogen production module 110, a first waste heat recovery module 120, a hydrogen production module 130, a hydrogen fuel cell power generation module 140, and a second waste heat recovery module 150; wherein the AEM water electrolysis hydrogen production module 110 is used to receive electric energy input from an external power source to perform water electrolysis hydrogen production operation to produce hydrogen; wherein the produced hydrogen is supplied to the hydrogen fuel cell power generation module or stored in the hydrogen storage module 130; the first waste heat recovery module 120 includes a hydrogen production heat exchange unit and a hydrogen production heat storage unit, and the hydrogen production heat exchange unit is used to control the cooling water in the hydrogen production heat storage unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module during the execution of the water electrolysis hydrogen production operation to generate first-grade hot water; wherein the first-grade hot water The water is stored in the hydrogen production and heat storage unit; the hydrogen fuel cell power generation module 140 is used to receive the load power demand information, and execute the power generation operation of adding hydrogen as fuel according to the load power demand information to supply power to the load; the second waste heat recovery module 150 includes a fuel cell heat exchange unit and a fuel cell heat storage unit, and the fuel cell heat exchange unit is used to control the first grade hot water in the hydrogen production and heat storage unit to exchange heat with the coolant in the hydrogen fuel cell power generation module during the power generation operation to generate second grade hot water, and store the second grade hot water in the fuel cell heat storage unit; the fuel cell heat storage unit is used to receive the terminal water demand information, and supply the second grade hot water to the terminal according to the terminal water demand information; wherein the temperature of the second grade hot water is higher than the temperature of the first grade hot water.

[0049] Through the above-mentioned settings, the present invention implements an integrated system that combines the AEM water electrolysis hydrogen production technology with the hydrogen fuel cell power generation technology, and realizes the effective utilization of the heat energy generated in the system through the waste heat recovery module. Specifically, by integrating the AEM water electrolysis hydrogen production and hydrogen fuel cell power generation technology, the cost of building two separate systems is reduced; the output of the hydrogen fuel cell power generation module is dynamically adjusted according to the actual electricity demand of the user, thereby improving the flexibility and reliability of the system's power supply; by sharing the waste heat recovery module, the construction and operation costs of the separate system are reduced, and the two-stage waste heat recovery is also realized, respectively, to achieve the effective recovery and utilization of the heat energy generated during the water electrolysis hydrogen production and hydrogen fuel cell power generation process, thereby improving the overall energy conversion efficiency of the system.

[0050] Among them, the AEM water electrolysis hydrogen production module provided in the embodiment of the present invention can be an existing AEM water electrolysis hydrogen production device, and the hydrogen outlet of the AEM water electrolysis hydrogen production module is respectively connected to a hydrogen storage module (such as a hydrogen storage tank) and a hydrogen fuel cell power generation module (the hydrogen generated by the AEM water electrolysis hydrogen production module can be directly supplied to the hydrogen fuel cell power generation module as needed, as fuel for it to perform power generation operations).

[0051] The heat energy generated during the AEM water electrolysis hydrogen production process will cause the electrolyte in the AEM water electrolysis hydrogen production module to heat up. The cooling water (in the hydrogen production heat storage unit) is controlled by the hydrogen production heat exchange unit (such as the hydrogen production heat exchange pipeline) to exchange heat with the electrolyte. After the cooling water is heated up and becomes first-grade hot water, it continues to be stored in the hydrogen production heat storage unit, thereby realizing the first heat energy recovery.

[0052] The heat energy generated during the hydrogen fuel cell power generation process will cause the coolant in the hydrogen fuel cell power generation module to heat up. The first-grade hot water generated by the first heat energy recovery in the hydrogen production and heat storage unit is controlled by the fuel cell heat exchange unit (such as the fuel cell heat exchange pipeline) to exchange heat with the above-mentioned coolant. The first-grade hot water is heated up to become second-grade hot water and then stored in the fuel cell energy storage unit, thereby realizing the second heat energy recovery. The second-grade hot water converted from the cooling water after two heat exchange operations can be supplied to the user terminal, realizing the effective utilization of the recovered heat energy.

[0053] According to the embodiments of the present invention, it can be understood that in order to realize two heat energy recoveries and two heat exchanges of cooling water, there is a necessary connection relationship between the units in the first waste heat recovery module, the units in the second waste heat recovery module and the two waste heat recovery modules. For example, the hydrogen production heat exchange unit needs to be connected to the hydrogen production heat storage unit by pipeline, so that the cooling water in the hydrogen production heat storage unit can exchange heat with the electrolyte through the pipeline, and the first grade hot water generated by the heat exchange is then input back into the hydrogen production heat storage unit through the pipeline.

[0054] In some of the embodiments, the hydrogen storage module is used to store the hydrogen produced by the AEM water electrolysis hydrogen production module. The hydrogen storage module is also used to supply the stored hydrogen to the hydrogen fuel cell power generation module as fuel for power generation operations. The hydrogen production module is also used to monitor its own hydrogen storage status. When it is monitored that the hydrogen storage amount reaches a threshold (i.e., the hydrogen storage tank is full), it is necessary to promptly send information to the system to replace the hydrogen storage module; the AEM water electrolysis hydrogen production module is also used to obtain the power state of the external power supply and the hydrogen storage state of the hydrogen storage module, and control and adjust the operating power of the water electrolysis hydrogen production operation according to the power state and the hydrogen storage state.

[0055] The system provided by the embodiment of the present invention can dynamically adjust the operating power of the electrolysis of water to produce hydrogen according to the power state and hydrogen storage state of the external power supply, which helps to increase the amount of hydrogen produced when the power supply is sufficient, and reduce the amount of hydrogen produced when the power supply is tight, thereby optimizing energy management and scheduling, and achieving more efficient energy utilization. Especially in the scenario where there are a large number of AEMs electrolyzing water to produce hydrogen, the presence of the hydrogen storage module allows the hydrogen produced by electrolysis of water to be stored so that fuel can be supplied to the hydrogen fuel cell power generation module when needed, ensuring that even if the external power supply is unstable or interrupted (the amount of hydrogen produced by AEM electrolysis of water is reduced or interrupted at this time), the hydrogen fuel cell power generation module can continue to generate electricity, that is, the flexibility and responsiveness of the system are improved, and the reliability and continuity of the system are enhanced.

[0056] In some of the embodiments, the AEM water electrolysis hydrogen production module includes multiple AEM fuel cells, wherein the AEM water electrolysis hydrogen production module is also used to bypass the faulty AEM fuel cell stack and adjust the operating power of the water electrolysis hydrogen production operation when any one or more AEM fuel cell stacks encounter a fault; after the fault is repaired, the bypass operation is released and the operating power of the water electrolysis hydrogen production operation is restored.

[0057] The use of a water electrolysis hydrogen production module including multiple AEM fuel cells expands the total power of the AEM water electrolysis hydrogen production module. Combined with the faulty fuel cell bypass operation, it avoids the situation where a single point failure causes the entire water electrolysis hydrogen production operation to be interrupted, thereby improving the reliability and continuity of the system. The bypass operation and power adjustment mechanism ensure that the system always operates in the optimal state and can maintain a high energy conversion efficiency even in the event of a partial fuel cell failure.

[0058] In some of the embodiments, the system further includes a water level management module, which is used to manage the water level of the hydrogen production and heat storage unit by controlling the external cooling water input and the first grade hot water discharge of the hydrogen production and heat storage unit, and to manage the water level of the fuel cell heat storage unit by controlling the second grade hot water discharge in the fuel cell heat storage unit.

[0059] By precisely managing the water levels of the hydrogen production heat storage unit and the fuel cell heat storage unit, the heat exchange process can be better controlled, ensuring the effective transfer and storage of thermal energy and improving the overall energy utilization of the system. At the same time, the water level management module can monitor and adjust the water level in real time to ensure that the system can operate stably under various operating conditions and reduce downtime and maintenance caused by water level problems.

[0060] The above-mentioned energy management system provided by the embodiment of the present invention, since the AEM water electrolysis hydrogen production module is used to receive electric energy input from an external power supply to perform water electrolysis hydrogen production operation to produce hydrogen; wherein the produced hydrogen is supplied to the hydrogen fuel cell power generation module or stored in the hydrogen storage module; the first waste heat recovery module includes a hydrogen production heat exchange unit and a hydrogen production heat storage unit, and the hydrogen production heat exchange unit is used to control the cooling water in the hydrogen production heat storage unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module during the execution of the water electrolysis hydrogen production operation, so as to generate first-grade hot water; wherein the first-grade hot water is stored in the hydrogen production heat storage unit; the hydrogen fuel cell power generation module is used to receive the load power demand The second waste heat recovery module includes a fuel cell heat exchange unit and a fuel cell heat storage unit. The fuel cell heat exchange unit is used to control the first-grade hot water in the hydrogen production and storage unit to exchange heat with the coolant in the hydrogen fuel cell power generation module during the power generation operation to generate second-grade hot water, and store the second-grade hot water in the fuel cell heat storage unit. The fuel cell heat storage unit is used to receive the terminal water demand information and supply the second-grade hot water to the terminal according to the terminal water demand information. The temperature of the second-grade hot water is higher than that of the first-grade hot water. The invention overcomes the problem in related technologies that the water electrolysis hydrogen production system, hydrogen storage system and hydrogen fuel cell power generation system are built separately, resulting in high system construction cost, low system energy conversion efficiency and energy utilization rate, which is not conducive to promoting the promotion and application of water electrolysis hydrogen production and hydrogen fuel cell power generation. It realizes the construction of an energy management system integrating water electrolysis hydrogen production, hydrogen storage, hydrogen fuel cell power generation and system thermal energy management, reducing the overall system construction cost. The heat energy in the water electrolysis hydrogen production process is recovered for the first time based on the first waste heat recovery module, and the heat energy in the hydrogen fuel cell power generation process is recovered for the second time based on the second waste heat recovery module. The second-grade hot water obtained can also be supplied to user terminals, further improving the system energy utilization rate, enhancing user experience, effectively promoting the promotion and application of water electrolysis hydrogen production technology and hydrogen fuel cell power generation technology, and expanding the technical effect of application scenarios.

[0061] The embodiment of the present invention also provides an energy management method based on hydrogen production and hydrogen fuel cell power generation, which is applied to the above energy management system. Figure 2 As shown, the energy management method provided by the embodiment of the present invention mainly includes:

[0062] Step S201, receiving electric energy input from an external power source through the AEM water electrolysis hydrogen production module to perform water electrolysis hydrogen production operation to produce hydrogen, and supply the produced hydrogen to the hydrogen fuel cell power generation module or store it in the hydrogen storage module; during the execution of the water electrolysis hydrogen production operation, the cooling water in the hydrogen production heat storage unit is controlled by the hydrogen production heat exchange unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module to generate first grade hot water, and the first grade hot water is stored in the hydrogen production heat storage unit.

[0063] Among them, the energy management method provided by the embodiment of the present invention is applied to an energy management system that integrates water electrolysis hydrogen production, hydrogen storage, hydrogen fuel cell power generation, and system thermal energy management, which reduces the overall system construction cost, improves the system energy utilization rate, and enhances user experience, effectively promoting the promotion and application of water electrolysis hydrogen production technology and hydrogen fuel cell power generation technology.

[0064] Based on the above step S201, through the cooperation of the hydrogen production heat exchange unit and the hydrogen production heat storage unit in the first waste heat recovery module in the energy management system, the heat energy recovery and storage in the water electrolysis hydrogen production operation is realized, and the heat that would otherwise be lost is converted into useful first-grade hot water, thereby improving the overall energy utilization efficiency, which not only reduces energy waste, but also increases the comprehensive benefits of the system.

[0065] In some of the embodiments, the above method also includes: obtaining the power state of the external power supply and the hydrogen storage state of the hydrogen storage module through the AEM water electrolysis hydrogen production module, and controlling and adjusting the operating power of the water electrolysis hydrogen production operation according to the power state and the hydrogen storage state.

[0066] The system provided in the embodiment of the present invention can dynamically adjust the operating power of the water electrolysis hydrogen production operation according to the power state and hydrogen storage state of the external power supply, which helps to increase the hydrogen production when the power supply is sufficient and reduce the hydrogen production when the power supply is tight, thereby optimizing energy management and scheduling and achieving more efficient energy utilization.

[0067] In some of the embodiments, the method further includes: controlling the hydrogen valve state of the hydrogen storage module according to its own hydrogen storage state and external instructions through the hydrogen storage module. When the external instruction is a storage instruction issued by the AEM water electrolysis hydrogen production module, the hydrogen storage module opens the hydrogen discharge valve to store the hydrogen produced by the AEM water electrolysis hydrogen production module; when the external instruction is a hydrogen use instruction sent by the hydrogen fuel cell power generation module, the hydrogen storage module opens the hydrogen discharge valve to supply the stored hydrogen to the hydrogen fuel cell power generation module as fuel for power generation operation. Through the above arrangement, the hydrogen storage module controls the hydrogen valve so that the hydrogen produced by water electrolysis can be stored, so as to supply fuel to the hydrogen fuel cell power generation module when needed, ensuring that even if the external power supply is unstable or interrupted (at this time, the amount of hydrogen produced by AEM water electrolysis is reduced or interrupted), the hydrogen fuel cell power generation module can continue to generate electricity, that is, the flexibility and responsiveness of the system are improved, and the reliability and continuity of the system are enhanced.

[0068] In some of the embodiments, the AEM water electrolysis hydrogen production module includes multiple AEM stacks. During the execution of the water electrolysis hydrogen production operation, the method further includes: when any one or more AEM stacks encounter a fault, the faulty AEM stack is bypassed by the AEM water electrolysis hydrogen production module, and the operating power of the water electrolysis hydrogen production operation is adjusted; after the fault is repaired, the bypass operation is released by the AEM water electrolysis hydrogen production module and the operating power of the water electrolysis hydrogen production operation is restored.

[0069] Through the above settings, the situation where a single point failure causes the entire water electrolysis hydrogen production operation to be interrupted is avoided, and the reliability and continuity of the system are improved. The bypass operation and power adjustment mechanism ensure that the system always operates in the optimal state and can maintain a high energy conversion efficiency even in the event of partial fuel cell failure.

[0070] In some of the embodiments, the method further includes: before the electrolysis of water to produce hydrogen is performed, controlling the external cooling water to be input into the hydrogen production and heat storage unit through the water level management module until the first water storage position is met; during the electrolysis of water to produce hydrogen, monitoring the water temperature of the first grade hot water in the hydrogen production and heat storage unit through the water level management module, and if the water temperature of the first grade hot water is higher than the temperature threshold, controlling the external cooling water to continue to be input into the hydrogen production and heat storage unit without exceeding the second water storage position; when the water level in the hydrogen production and heat storage unit is higher than the second water storage position, controlling the first grade hot water to be discharged to the fuel cell heat storage unit through the water level management module; wherein the level of the second water storage position is higher than the level of the first water storage position.

[0071] Through the above settings, the setting and monitoring of the first water storage position ensures that the hydrogen production and heat storage unit reserves sufficient cooling water before the electrolysis water hydrogen production operation is started, avoiding equipment damage or insufficient heat recovery due to insufficient water level. And by setting the first water storage position and the second water storage position at different levels, multi-level water level management is achieved, which helps to control the water level more finely and ensure the optimal operation of the system under different working conditions. When the water temperature of the first grade hot water reaches a certain level, the heat recovery efficiency can be further improved by controlling the input of external cooling water to ensure that the generated hot water can be fully utilized. When the water level in the hydrogen production and heat storage unit is higher than the second water storage position, the first grade hot water is controlled by the water level management module to be discharged to the fuel cell heat storage unit. This automated water level adjustment mechanism ensures the stable operation of the system and prevents excessive pressure or other problems caused by excessively high water levels. By accurately managing the water level of the hydrogen production and heat storage unit, the heat exchange process can be better controlled, ensuring the effective transfer and storage of heat energy, and improving the overall energy utilization of the system.

[0072] Step S202, receiving load power demand information through the hydrogen fuel cell power generation module, and performing a power generation operation of adding hydrogen as fuel according to the load power demand information to supply power to the load; during the power generation operation, the first grade hot water in the hydrogen production and heat storage unit is controlled by the fuel cell heat exchange unit to exchange heat with the coolant in the hydrogen fuel cell power generation module to generate second grade hot water, and the second grade hot water is stored in the fuel cell heat storage unit; wherein the temperature of the second grade hot water is higher than the temperature of the first grade hot water.

[0073] Through the above settings, the system can dynamically adjust the power generation operation according to the load power demand to achieve efficient power output. This ensures the flexibility and reliability of power supply to meet the needs of different loads.

[0074] During the power generation process, the fuel cell heat exchange unit controls the first-grade hot water to exchange heat with the coolant in the hydrogen fuel cell power generation module to generate second-grade hot water with a higher temperature, thereby realizing secondary heating of the cooling water (the cooling water is converted into first-grade hot water through one heat exchange, and then into second-grade hot water through a second heat exchange). This multi-stage heat recovery mechanism enables the system to more effectively recycle waste heat, improve the overall energy utilization rate of the system, and reduce energy waste.

[0075] In some of the embodiments, the above-mentioned steps of receiving load power demand information through the hydrogen fuel cell power generation module and performing power generation operations using hydrogen as fuel according to the load power demand information include: after receiving the load power demand information, determining the hydrogen demand according to the load power demand information through the hydrogen fuel cell power generation module, and obtaining the hydrogen production amount of the AEM water electrolysis hydrogen production module and the hydrogen storage amount in the hydrogen storage module; generating a hydrogen output instruction according to the hydrogen demand, hydrogen production amount and hydrogen storage amount, and sending the hydrogen output instruction to the AEM water electrolysis hydrogen production module and / or the hydrogen storage module to obtain the hydrogen fuel required to perform the power generation operation, and perform the power generation operation.

[0076] By receiving load power demand information, the system can dynamically adjust the output power of the hydrogen fuel cell power generation module to ensure that the power supply accurately matches the actual demand, improve the response speed and flexibility of the system, optimize the use of hydrogen, ensure the continuity and reliability of power generation operations, and meet the changing needs of different loads.

[0077] Step S203, receiving terminal water demand information through the fuel cell thermal storage unit, and supplying second-grade hot water to the terminal according to the terminal water demand information.

[0078] The system dynamically adjusts the supply of second-grade hot water according to actual water demand, ensuring the precise match between hot water supply and user demand and improving user experience. In addition, based on the terminal water demand information, the system can also reasonably dispatch and control the generation and storage of second-grade hot water to avoid unnecessary waste of heat energy. This on-demand supply method improves the overall energy efficiency of the system.

[0079] In some of the embodiments, the method further includes: monitoring the water level of the second grade hot water in the fuel cell heat storage unit through a water level management module; if the actual water level of the second grade hot water is higher than a water level threshold, controlling the fuel cell heat storage unit to discharge part of the second grade hot water until the actual water level is no higher than the water level threshold.

[0080] The above steps provide a bottom-line safety protection strategy for the fuel cell heat storage unit. By real-time monitoring the water level of the second-grade hot water in the fuel cell heat storage unit and discharging some hot water when the water level is higher than the water level threshold, the heat storage unit can be effectively prevented from being over-pressurized or overflowing due to excessively high water levels, thereby avoiding equipment damage and ensuring the safe operation of the system.

[0081] According to an embodiment of the present invention, a specific implementation method for performing water electrolysis hydrogen production operation based on an AEM water electrolysis hydrogen production module is also provided, such as Figure 3As shown, when there is electric energy input from the external power supply, the AEM water electrolysis hydrogen production module starts the hydrogen production operation and controls the output hydrogen production according to the input electric energy; when one or more AEM fuel cells fail to produce hydrogen, the faulty AEM fuel cells are bypassed, and the AEM water electrolysis hydrogen production module operates at a reduced power, while prompting to replace or maintain the faulty parts. After confirming that the maintenance is completed, the AEM water electrolysis hydrogen production module cancels the bypass operation and resumes normal operating power.

[0082] According to an embodiment of the present invention, a specific implementation method of the operation of the hydrogen storage module is also provided. Figure 4 As shown, the hydrogen storage module is used to store the hydrogen produced by the AEM water electrolysis hydrogen production module. When the storage space in the hydrogen storage module is insufficient (the current hydrogen storage module is full), the hydrogen storage module needs to be replaced in time.

[0083] According to an embodiment of the present invention, a specific implementation method for heat recovery in the operation of electrolyzing water to produce hydrogen is also provided. Figure 5 As shown: (1) Before the electrolysis of water hydrogen production operation begins, external cooling water is sent into the hydrogen production heat storage unit. After the water storage reaches the first water storage position, the external cooling water stops being sent in. When the AEM electrolysis of water hydrogen production module starts the electrolysis of water hydrogen production operation, the heat recovery operation is started, that is, during the electrolysis of water hydrogen production operation, the cooling water in the hydrogen production heat storage unit is exchanged with the electrolyte in the AEM electrolysis of water hydrogen production module through the hydrogen production heat exchange unit to obtain the first grade hot water stored in the hydrogen production heat storage unit. (2) The water temperature in the hydrogen production heat storage unit is monitored. When the water temperature in the hydrogen production heat storage unit exceeds the set temperature threshold, a set volume of external cooling water is input into the hydrogen production heat storage unit. This step is a repeated step. Only when the water level of the hydrogen production heat storage unit is higher than the second water storage position and the water temperature is higher than the temperature threshold set by the hydrogen production heat storage unit, the hydrogen production heat storage unit allows the internal hot water (first grade hot water) to be discharged to the hydrogen fuel cell heat storage unit through the threshold valve below the second water storage position, and then continue to add external cooling water to repeat this step. (3) When the water stored in the hydrogen production and heat storage unit is higher than the overflow hole position, the first grade hot water is discharged to the hydrogen fuel cell heat storage unit through the overflow hole of the hydrogen production and heat storage unit, and an alarm is sent to the system at the same time: the threshold valve is faulty.

[0084] According to an embodiment of the present invention, a specific implementation method for performing power generation operation based on a hydrogen fuel cell power generation module is also provided. When the hydrogen fuel cell module is connected to the load power demand, the hydrogen demand corresponding to the hydrogen fuel cell power generation is calculated according to the load power demand, and then it is determined whether the hydrogen produced by the current AEM water electrolysis hydrogen production module can meet the demand. If so, a hydrogen use instruction is directly sent to the AEM water electrolysis hydrogen production module, and the hydrogen produced by the water electrolysis hydrogen production operation is directly used as fuel to generate electricity. If the hydrogen produced by the AEM water electrolysis hydrogen production module cannot meet the hydrogen demand required for power generation, a hydrogen use instruction is sent to the hydrogen storage module, and the hydrogen stored in the hydrogen storage module is used as a raw material to generate electricity. Alternatively, a hydrogen use instruction can also be sent to the AEM water electrolysis hydrogen production module and the hydrogen storage module at the same time, so that the two modules jointly supply hydrogen fuel to the hydrogen fuel cell power generation module.

[0085] According to an embodiment of the present invention, a specific implementation method for heat recovery in power generation operation is also provided. Figure 6 As shown: During the fuel cell power generation operation, the fuel cell heat exchange unit introduces the first grade hot water from the hydrogen production and heat storage unit to exchange heat with the coolant in the hydrogen fuel cell power generation module, and generates the second grade hot water and sends it to the fuel cell heat storage unit. If there is terminal water demand information, the fuel cell heat storage unit can directly supply the second grade hot water to the corresponding terminal. If there is no terminal water use information, it is necessary to monitor the water level in the fuel cell heat storage unit. If the water level in the fuel cell heat storage unit reaches the overflow hole position, it is necessary to promptly remove the hot water in the fuel cell heat storage unit and send an alarm message to the system.

[0086] The above-mentioned energy management method provided in the embodiment of the present invention adopts the method of receiving the electric energy input of the external power supply through the AEM water electrolysis hydrogen production module to perform the water electrolysis hydrogen production operation to produce hydrogen; wherein the produced hydrogen is supplied to the hydrogen fuel cell power generation module or stored in the hydrogen storage module 130; during the execution of the water electrolysis hydrogen production operation, the cooling water in the hydrogen production heat storage unit is controlled by the hydrogen production heat exchange unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module to generate first-grade hot water, and the first-grade hot water is stored in the hydrogen production heat storage unit; the load power demand information is received through the hydrogen fuel cell power generation module, and the power generation operation of adding hydrogen as fuel is performed according to the load power demand information to supply power to the load; during the execution of the power generation operation, the first-grade hot water in the hydrogen production heat storage unit is controlled by the fuel cell heat exchange unit to exchange heat with the coolant in the hydrogen fuel cell power generation module Heat exchange is performed to generate second-grade hot water, and the second-grade hot water is stored in the fuel cell heat storage unit; wherein the temperature of the second-grade hot water is higher than the temperature of the first-grade hot water; the terminal water demand information is received through the fuel cell heat storage unit, and the second-grade hot water is supplied to the terminal according to the terminal water demand information. The technical means realizes that while hydrogen is produced and stored during water electrolysis, hydrogen fuel cells are used to generate electricity to supply power to user loads, and the heat energy in the process of hydrogen production by water electrolysis is firstly recovered based on the first waste heat recovery module, and the heat energy in the process of hydrogen fuel cell power generation is secondly recovered based on the second waste heat recovery module. The obtained second-grade hot water can also be supplied to the user terminal, which further improves the energy utilization rate of the system, enhances the user experience, effectively promotes the popularization and application of water electrolysis hydrogen production technology and hydrogen fuel cell power generation technology, and expands the technical effect of application scenarios.

[0087] An embodiment of the present invention further provides a non-transitory machine-readable medium storing a computer program, wherein the computer program, when executed by a processor of a computer, is used to cause the computer to execute the method of the embodiment of the present invention.

[0088] The embodiment of the present invention further provides a computer program product, including a computer program, wherein the computer program is used to make the computer perform the method of the embodiment of the present invention when executed by a processor of the computer. The computer program product should be understood as a software product that mainly implements the above method of the present application through a computer program.

[0089] An embodiment of the present invention further provides an electronic device, comprising: at least one processor; and a memory in communication with the at least one processor. The memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the electronic device executes the method of the embodiment of the present invention.

[0090] refer to Figure 7, a block diagram of an electronic device that can be used as a server or client of an embodiment of the present invention will now be described, which is an example of a hardware device that can be applied to various aspects of the present invention. The electronic device is intended to represent various forms of digital electronic computer devices, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0091] like Figure 7 As shown, the electronic device includes a computing unit 701, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 702 or a computer program loaded from a storage unit 708 into a random access memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the electronic device can also be stored. The computing unit 701, the ROM 702, and the RAM 703 are connected to each other via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0092] Multiple components in the electronic device are connected to the I / O interface 705, including: an input unit 706, an output unit 707, a storage unit 708, and a communication unit 709. The input unit 706 can be any type of device that can input information to the electronic device, and the input unit 706 can receive input digital or character information, and generate key signal input related to user settings and / or function control of the electronic device. The output unit 707 can be any type of device that can present information, and can include but is not limited to a display, a speaker, a video / audio output terminal, a vibrator, and / or a printer. The storage unit 708 can include but is not limited to a disk, an optical disk. The communication unit 709 allows the electronic device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks, and can include but is not limited to a modem, a network card, an infrared communication device, and / or a wireless communication transceiver, such as a Bluetooth device, a WiFi device, a WiMax device, a cellular communication device, and / or the like.

[0093] The computing unit 701 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 701 include, but are not limited to, a CPU, a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing units, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 701 performs the various methods and processes described above. For example, in some embodiments, the method embodiments of the present invention may be implemented as a computer program, which is tangibly contained in a machine-readable medium, such as a storage unit 708. In some embodiments, part or all of the computer program may be loaded and / or installed on an electronic device via a ROM 702 and / or a communication unit 709. In some embodiments, the computing unit 701 may be configured to perform the above-described method in any other appropriate manner (e.g., by means of firmware).

[0094] The computer programs for implementing the methods of the embodiments of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer programs are executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer programs may be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0095] In the context of an embodiment of the present invention, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable signal medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, or infrared systems, devices, or equipment, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0096] It should be noted that the term "including" and its variations used in the embodiments of the present invention are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The modifications of "one" and "multiple" mentioned in the embodiments of the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

[0097] The data / information involved in the embodiments of the present invention (including but not limited to data / information used for analysis, data / information stored, data / information displayed, etc.) are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0098] The various steps described in the method implementation methods provided in the embodiments of the present invention may be performed in different orders and / or in parallel. In addition, the method implementation methods may include additional steps and / or omit the steps shown. The scope of protection of the present invention is not limited in this respect.

[0099] The term "embodiment" in this specification refers to specific features, structures or characteristics described in conjunction with the embodiment that can be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. The various embodiments in this specification are described in a related manner, and the same or similar parts between the various embodiments refer to each other. In particular, for the device, equipment, and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts refer to the partial description of the method embodiment.

[0100] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the attached claims.

Claims

1. An energy management system based on hydrogen production and hydrogen fuel cell power generation, characterized in that: include: AEM water electrolysis hydrogen production module, first waste heat recovery module, hydrogen storage module, hydrogen fuel cell power generation module, second waste heat recovery module; among them, The AEM water electrolysis hydrogen production module is used to receive electric energy input from an external power source to perform water electrolysis hydrogen production operation to produce hydrogen; wherein the produced hydrogen is supplied to the hydrogen fuel cell power generation module or stored in the hydrogen storage module; The first waste heat recovery module includes a hydrogen production heat exchange unit and a hydrogen production heat storage unit, wherein the hydrogen production heat exchange unit is used to control the cooling water in the hydrogen production heat storage unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module during the execution of the water electrolysis hydrogen production operation, so as to generate first-grade hot water; wherein the first-grade hot water is stored in the hydrogen production heat storage unit; The hydrogen fuel cell power generation module is used to receive load power demand information, and perform a power generation operation by adding hydrogen as fuel according to the load power demand information to supply power to the load; The second waste heat recovery module includes a fuel cell heat exchange unit and a fuel cell heat storage unit. The fuel cell heat exchange unit is used to control the first grade hot water in the hydrogen production and heat storage unit to exchange heat with the coolant in the hydrogen fuel cell power generation module during the power generation operation to generate second grade hot water, and store the second grade hot water in the fuel cell heat storage unit; the fuel cell heat storage unit is used to receive terminal water demand information and supply the second grade hot water to the terminal according to the terminal water demand information; wherein the temperature of the second grade hot water is higher than the temperature of the first grade hot water.

2. The system according to claim 1, characterized in that The hydrogen storage module is used to store the hydrogen produced by the AEM water electrolysis hydrogen production module, and the hydrogen storage module is also used to supply the stored hydrogen to the hydrogen fuel cell power generation module as fuel for power generation operation; The AEM water electrolysis hydrogen production module is also used to obtain the power state of the external power supply and the hydrogen storage state of the hydrogen storage module, and control and adjust the operating power of the water electrolysis hydrogen production operation according to the power state and the hydrogen storage state.

3. The system according to claim 1, characterized in that The AEM water electrolysis hydrogen production module includes multiple AEM stacks, wherein: The AEM water electrolysis hydrogen production module is also used to bypass the faulty AEM stack and adjust the operating power of the water electrolysis hydrogen production operation when any one or more of the AEM stacks encounters a fault; after the fault is repaired, the bypass operation is released and the operating power of the water electrolysis hydrogen production operation is restored.

4. The system according to claim 1, characterized in that The system also includes a water level management module, The water level management module is used to achieve water level management of the hydrogen production and heat storage unit by controlling the external cooling water input and the first grade hot water discharge of the hydrogen production and heat storage unit, and to achieve water level management of the fuel cell heat storage unit by controlling the second grade hot water discharge in the fuel cell heat storage unit.

5. An energy management method based on hydrogen production and hydrogen fuel cell power generation, characterized in that: An energy management system based on hydrogen production and hydrogen fuel cell power generation applied to any one of claims 1-4, comprising: The AEM water electrolysis hydrogen production module receives electric energy input from an external power source to perform water electrolysis hydrogen production operation to produce hydrogen, and the produced hydrogen is supplied to the hydrogen fuel cell power generation module or stored in the hydrogen storage module; during the water electrolysis hydrogen production operation, the cooling water in the hydrogen production heat storage unit is controlled by the hydrogen production heat exchange unit to exchange heat with the electrolyte in the AEM water electrolysis hydrogen production module to generate first-grade hot water, and the first-grade hot water is stored in the hydrogen production heat storage unit; The load power demand information is received through the hydrogen fuel cell power generation module, and a power generation operation of adding hydrogen as fuel is performed according to the load power demand information to supply power to the load; during the power generation operation, the first-grade hot water in the hydrogen production and heat storage unit is controlled to exchange heat with the coolant in the hydrogen fuel cell power generation module through the fuel cell heat exchange unit to generate second-grade hot water, and the second-grade hot water is stored in the fuel cell heat storage unit; wherein the temperature of the second-grade hot water is higher than the temperature of the first-grade hot water; The terminal water demand information is received through the fuel cell heat storage unit, and the second-grade hot water is supplied to the terminal according to the terminal water demand information.

6. The method according to claim 5, characterized in that The method further comprises: The AEM water electrolysis hydrogen production module obtains the power state of the external power supply and the hydrogen storage state of the hydrogen storage module, and controls and adjusts the operating power of the water electrolysis hydrogen production operation according to the power state and the hydrogen storage state.

7. The method according to claim 5, characterized in that The AEM water electrolysis hydrogen production module includes a plurality of AEM stacks. During the water electrolysis hydrogen production operation, the method further includes: When any one or more of the AEM stacks encounters a fault, the AEM water electrolysis hydrogen production module is used to bypass the faulty AEM stack and adjust the operating power of the water electrolysis hydrogen production operation; after the fault is repaired, the AEM water electrolysis hydrogen production module is used to release the bypass operation and restore the operating power of the water electrolysis hydrogen production operation.

8. The method according to claim 5, characterized in that The method further comprises: Before the electrolysis of water to produce hydrogen is performed, the water level management module is used to control the external cooling water to be input into the hydrogen production and heat storage unit until the first water storage position is met; During the execution of the hydrogen production operation by electrolysis of water, the water temperature of the first grade hot water in the hydrogen production heat storage unit is monitored by the water level management module. If the water temperature of the first grade hot water is higher than the temperature threshold, the external cooling water is controlled to continue to be input into the hydrogen production heat storage unit without exceeding the second water storage position; when the water level in the hydrogen production heat storage unit is higher than the second water storage position, the water level management module is used to control the first grade hot water to be discharged to the fuel cell heat storage unit; wherein the horizontal height of the second water storage position is higher than the horizontal height of the first water storage position.

9. The method according to claim 8, characterized in that The method further comprises: The water level of the second grade hot water in the fuel cell heat storage unit is monitored by the water level management module. If the actual water level of the second grade hot water is higher than the water level threshold, the fuel cell heat storage unit is controlled to discharge part of the second grade hot water until the actual water level is no higher than the water level threshold.

10. The method according to claim 5, characterized in that The step of receiving load power demand information through the hydrogen fuel cell power generation module and performing power generation operation using hydrogen as fuel according to the load power demand information includes: After receiving the load power demand information, the hydrogen demand is determined according to the load power demand information by the hydrogen fuel cell power generation module, and the hydrogen production amount of the AEM water electrolysis hydrogen production module and the hydrogen storage amount in the hydrogen storage module are obtained; A hydrogen output instruction is generated according to the hydrogen demand, the hydrogen production amount and the hydrogen storage amount, and the hydrogen output instruction is sent to the AEM water electrolysis hydrogen production module and / or hydrogen storage module to obtain the hydrogen fuel required for performing power generation operations and perform power generation operations.

11. An electronic device, comprising: A processor, and a memory storing a program, wherein the program comprises instructions, which, when executed by the processor, cause the processor to perform the method according to any one of claims 5 to 10.

12. A non-transitory machine-readable medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 5-10.

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