Thermal energy distribution system for electrolytic hydrogen production

Abstract

The embodiment of the invention provides a heat energy distribution system for electrolytic hydrogen production. The system comprises a wind-solar complementary power supply unit, an electrolytic hydrogen production unit, a heat energy utilization unit, a control unit and a heat energy recovery unit, the electrolytic hydrogen production unit is connected with the wind-solar complementary power supply unit and used for hydrogen production based on electric energy provided by the wind-solar complementary power supply unit, and the heat energy recovery unit is connected with the electrolytic hydrogen production unit and used for heat energy utilization. The heat energy recovery unit is used for obtaining heat energy generated in the hydrogen production treatment process and connected with the control unit and the heat energy using unit, and the control unit is used for controlling the heat energy recovery unit to distribute the heat energy to the heat energy using unit. By means of the technical scheme, heat energy generated in the process that the electrolytic cell is driven by wind-solar complementary power supply to produce hydrogen can be recycled, heat energy waste is avoided, and the heat energy utilization efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage distribution, and particularly relates to a thermal energy distribution system for electrolytic hydrogen production. BACKGROUND

[0002] The wind-solar hydrogen production system mainly obtains electric energy by combining wind energy and solar energy, and then drives water electrolysis to produce hydrogen. Wind energy and solar energy are renewable new energy, and the energy source is clean and does not depend on fossil fuels, which has significant potential in addressing energy shortages and environmental pollution.

[0003] The traditional wind-solar hydrogen production system mainly uses a wind turbine and a solar photovoltaic array to convert wind energy and solar energy into electric energy, respectively, and electrolyzes water by proton exchange membrane electrolysis or alkaline electrolysis to generate hydrogen and oxygen.

[0004] However, the traditional wind-solar hydrogen production system has problems of heat energy waste and low heat energy utilization efficiency in the process of electrolyzing water to produce hydrogen. SUMMARY

[0005] The present application provides a thermal energy distribution system for electrolytic hydrogen production to avoid heat energy waste and improve heat energy utilization efficiency.

[0006] In a first aspect, the present application provides a thermal energy distribution system for electrolytic hydrogen production, comprising: a wind-solar complementary power supply unit, an electrolytic hydrogen production unit, a heat energy use unit, a control unit, and a heat energy recovery unit;

[0007] The electrolytic hydrogen production unit is connected with the wind-solar complementary power supply unit, and is configured to perform hydrogen production processing based on the electric energy provided by the wind-solar complementary power supply unit;

[0008] The heat energy recovery unit is connected with the electrolytic hydrogen production unit, and is configured to obtain heat energy generated in the hydrogen production processing;

[0009] The heat energy recovery unit is connected with the control unit and the heat energy use unit, respectively, and the control unit is configured to control the heat energy recovery unit to distribute the heat energy to the heat energy use unit.

[0010] In one or more embodiments, the heat energy recovery unit comprises a main pipe and a heat pump;

[0011] The heat pump is connected with the electrolytic hydrogen production unit, and is configured to obtain heat energy generated in the hydrogen production processing and perform heating processing;

[0012] The main pipe is connected with the heat energy use unit and the heat pump, respectively, and is configured to transmit the heat energy after the heating processing of the heat pump to the heat energy use unit.

[0013] In one or more embodiments, the heat energy using unit comprises at least one sub-using unit; the heat energy recycling unit further comprises at least one branch pipe;

[0014] For each branch pipe, the branch pipe is connected with the main pipe and the sub-using unit respectively, for transmitting the heat energy in the main pipe to the sub-using unit.

[0015] In one or more embodiments, the heat energy distribution system further comprises at least one temperature sensor, at least one flow regulator;

[0016] For each branch pipe, the temperature sensor is connected with the control unit, for collecting a first temperature in the branch pipe and transmitting to the control unit;

[0017] The control unit is connected with the flow regulator, for adjusting the flow of the heat corresponding carrier in the branch pipe according to the first temperature and a temperature threshold corresponding to the sub-using unit.

[0018] In one or more embodiments, the control unit is used for controlling the switching timing of the at least one flow regulator and adjusting the flow of the heat corresponding carrier in the branch pipe according to a priority set;

[0019] The priority set comprises at least one sub-using unit arranged in priority order.

[0020] In one or more embodiments, the electrolytic hydrogen production unit comprises an electrolytic cell, a gas-liquid separator, and a heat exchanger connected in sequence;

[0021] The electrolytic cell is connected with the wind-solar complementary power supply unit, for performing water electrolysis process in hydrogen production according to the electric energy;

[0022] The heat exchanger is connected with the heat energy recycling unit, for transferring the heat energy generated by the gas-liquid separator to the heat energy recycling unit.

[0023] In one or more embodiments, the wind-solar complementary power supply unit comprises a wind-solar power generation unit, an energy storage battery, a super capacitor, and a bidirectional converter connected in sequence;

[0024] The wind-solar power generation unit is used for generating electric energy;

[0025] The energy storage battery is used for transmitting the generated electric energy greater than a preset capacity to the super capacitor;

[0026] The super capacitor is used for smoothing the fluctuation of the electric energy, and transmitting the smoothed electric energy to the bidirectional converter;

[0027] The bidirectional converter is connected with the electrolytic cell, and is used for converting electric energy and transmitting the converted electric energy to the electrolytic cell.

[0028] In one or more embodiments, at least one sub-use unit in the thermal energy use unit comprises a phase change heat storage tank, a hot water storage tank, a drying device, a building heating pipe network, and a raw water preheater.

[0029] In one or more embodiments, the control unit is configured to adjust the thermal energy distribution of the at least one sub-use unit according to weather information after a preset time period.

[0030] In one or more embodiments, the thermal energy distribution system further comprises a circulating pump.

[0031] The circulating pump is arranged between the hot water storage tank and the building heating pipe network.

[0032] The control unit is configured to send an adjustment instruction to the circulating pump, and the circulating pump adjusts the flow of hot water in the hot water storage tank to the building heating pipe network according to the adjustment instruction.

[0033] The thermal energy distribution system for electrolytic hydrogen production provided by the embodiments of the present application comprises a wind-solar complementary power supply unit, an electrolytic hydrogen production unit, a thermal energy use unit, a control unit, and a thermal energy recovery unit. The electrolytic hydrogen production unit is connected with the wind-solar complementary power supply unit, and is used for hydrogen production based on the electric energy provided by the wind-solar complementary power supply unit. The thermal energy recovery unit is connected with the electrolytic hydrogen production unit, and is used for obtaining thermal energy generated in the hydrogen production process. The thermal energy recovery unit is connected with the control unit and the thermal energy use unit. The control unit is used for controlling the thermal energy recovery unit to distribute thermal energy to the thermal energy use unit. By using the technical solution of the present application, the thermal energy generated in the process of driving the electrolytic cell for hydrogen production by the wind-solar complementary power supply unit can be recovered and used, so as to avoid waste of thermal energy. By arranging the thermal energy use unit, the recovered thermal energy can be reasonably distributed and applied, so as to improve the utilization efficiency of thermal energy. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0035] Figure 1 The structure of the thermal energy distribution system for electrolytic hydrogen production provided by the embodiments of the present application is shown in Figure One ;

[0036] Figure 2 The structure of the thermal energy distribution system for electrolytic hydrogen production provided by the embodiments of the present application is shown in Figure Two ;

[0037] Figure 3 Structure diagram of a heat energy distribution system for electrolytic hydrogen production provided by an embodiment of the present application Figure Three

[0038] Figure 4 Structure diagram of a heat energy distribution system for electrolytic hydrogen production provided by an embodiment of the present application Figure Four

[0039] Figure 5 Structure diagram of a heat energy distribution system for electrolytic hydrogen production provided by an embodiment of the present application Figure Five

[0040] Figure 6 Structure diagram of a heat energy distribution system for electrolytic hydrogen production provided by an embodiment of the present application Figure Six

[0041] Figure 7 Structure diagram of a heat energy distribution system for electrolytic hydrogen production provided by an embodiment of the present application Figure Seven .

[0042] The specific embodiments of the present application have been shown through the above-described drawings, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] Exemplary embodiments will be described in detail herein below with reference to the drawings. In the following description, the same drawings reference numerals are used to refer to elements having the same or similar functions unless otherwise indicated. The implementations described in the following exemplary embodiments are not meant to represent all implementations consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0044] Before introducing the embodiments of the present application, the application background of the embodiments of the present application is first explained:

[0045] The wind-solar hydrogen production system mainly obtains electrical energy by combining wind energy and solar energy, and then drives water electrolysis to produce hydrogen. Wind energy and solar energy are renewable new energy, and the energy source is clean and does not rely on fossil fuels, which has significant potential in addressing energy shortages and environmental pollution problems.

[0046] The traditional wind-solar hydrogen production system mainly uses wind turbines and solar photovoltaic arrays to convert wind energy and solar energy into electrical energy, respectively, and electrolyzes water by proton exchange membrane electrolysis or alkaline electrolysis to generate hydrogen and oxygen.

[0047] ​​​​However, in the process of electrolyzing water to produce hydrogen, the conventional wind-solar hydrogen production system converts a large amount of electric energy into waste heat, which is usually directly discharged or simply stored, resulting in waste of heat energy and low heat energy utilization efficiency.

[0048] In addition, wind power and solar power generation are greatly affected by weather, which causes the electrolytic cell to frequently start and stop. The intermittency of wind power and the day and night alternation and change of solar power cause the electric energy input into the electrolytic cell to be strongly fluctuant, reducing the use time limit of the electrolytic cell and the continuity and stability of the hydrogen production process.

[0049] The electrolytic hydrogen production heat energy distribution system provided in the present application aims to solve the above technical problems of the prior art. The inventive concept of the present application is as follows: in a conventional wind-solar hydrogen production system, wind power and solar power are converted into electric energy by a wind turbine and a solar photovoltaic array, respectively, and then water is electrolyzed to produce hydrogen according to the generated electric energy. However, in the process of electrolyzing water to produce hydrogen, waste heat is generated, resulting in waste of heat energy. In order to reduce the waste of heat energy, the generated waste heat is considered to be recycled and reused. Therefore, in the present application, a heat energy recovery unit is provided to recover the heat energy generated in the process of electrolyzing water to produce hydrogen, and a heat energy use unit is provided. The recovered heat energy is reasonably distributed to the heat energy use unit for application by a control unit, thereby improving the utilization efficiency of heat energy.

[0050] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0051] Figure 1 Structure diagram of the electrolytic hydrogen production heat energy distribution system provided in the embodiments of the present application Figure One As shown in the structure diagram, the electrolytic hydrogen production heat energy distribution system comprises a wind-solar complementary power supply unit, an electrolytic hydrogen production unit, a heat energy use unit, a control unit, and a heat energy recovery unit. Figure 1

[0052] In the electrolytic hydrogen production heat energy distribution system, the following implementation explanations are provided:

[0053] 1) The electrolytic hydrogen production unit is connected with the wind-solar complementary power supply unit, and is used for hydrogen production treatment based on the electric energy provided by the wind-solar complementary power supply unit.

[0054] For example, the electrolytic hydrogen production unit is connected with the wind-solar complementary power supply unit, and the wind-solar complementary power supply unit converts wind power and solar power into electric energy and provides the electric energy to the electrolytic hydrogen production unit, so that the electrolytic hydrogen production unit performs hydrogen production treatment based on the electric energy.

[0055] ​In a possible implementation, the electrolytic hydrogen production unit mainly performs hydrogen production by electrolyzing water, and generally includes an anode and a cathode. Under the action of electric energy, water molecules undergo oxidation and reduction reactions at the anode and the cathode of the electrolytic hydrogen production unit, respectively, to generate oxygen and hydrogen.

[0056] 2) The thermal energy recovery unit is connected to the electrolytic hydrogen production unit, and is configured to obtain thermal energy generated in the hydrogen production process.

[0057] For example, the electrolytic hydrogen production unit generates thermal energy in the hydrogen production process, and the generated thermal energy needs to be recovered and reused to avoid waste of thermal energy. Therefore, the thermal energy recovery unit connected to the electrolytic hydrogen production unit is configured to obtain thermal energy generated in the hydrogen production process.

[0058] In a possible implementation, about 30% of the electric energy is converted into thermal energy in the process of electrolyzing water to produce hydrogen. When water is electrolyzed to produce hydrogen, part of the electric energy is converted into thermal energy due to the resistance of the electrolytic hydrogen production unit. In addition, when the chemical reaction rate is high in the process of electrolyzing water, part of the electric energy is also converted into thermal energy.

[0059] 3) The thermal energy recovery unit is connected to the control unit and the thermal energy use unit, respectively, and the control unit is configured to control the thermal energy recovery unit to distribute thermal energy to the thermal energy use unit.

[0060] For example, the thermal energy recovery unit is connected to the control unit and the thermal energy use unit, respectively, and the control unit is configured to control the thermal energy recovery unit to distribute thermal energy to the thermal energy use unit, and the thermal energy use unit is configured to receive and use the distributed thermal energy, thereby achieving reuse of the thermal energy.

[0061] In a possible implementation, the amount of thermal energy required by different thermal energy use units can also be different, and the control unit can distribute thermal energy according to the amount of thermal energy required by the thermal energy use unit,

[0062] The thermal energy distribution system for electrolytic hydrogen production provided in the embodiments of the present application includes a wind-solar complementary power supply unit, an electrolytic hydrogen production unit, a thermal energy use unit, a control unit, and a thermal energy recovery unit. By arranging the thermal energy recovery unit, the thermal energy generated in the process of driving the electrolytic cell to produce hydrogen by the wind-solar complementary power supply can be recovered and used, thereby avoiding waste of thermal energy. By arranging the thermal energy use unit, the recovered thermal energy can be reasonably distributed and applied, thereby improving the utilization efficiency of the thermal energy.

[0063] On the basis of the above-described embodiments, Figure 2 The structure of the thermal energy distribution system for electrolytic hydrogen production provided in the embodiments of the present application is shown in Figure Two For example, the thermal energy distribution system for electrolytic hydrogen production provided in the embodiments of the present application is shown in Figure 2As shown, the heat energy recovery unit comprises a mother pipe and a heat pump;

[0064] Correspondingly, based on the above structure, the following implementation is explained:

[0065] 1) The heat pump is connected to the electrolytic hydrogen production unit for obtaining the heat energy generated during the hydrogen production process and performing heating treatment;

[0066] For example, the heat pump in the heat energy recovery unit is connected to the electrolytic hydrogen production unit to obtain the heat energy generated during the hydrogen production process and perform heating treatment.

[0067] In one possible implementation, the heat pump obtains heat energy from the electrolytic hydrogen production unit, the heat energy is absorbed by the refrigerant inside the evaporator of the heat pump and evaporated into gas, the gas absorbing heat energy is compressed by the compressor in the heat pump, and the temperature and pressure of the compressed gas are increased, and the high-temperature and high-pressure gas is discharged through the condenser in the heat pump to obtain the heat energy after heating treatment.

[0068] The heat pump can use a two-stage compression heat pump to raise the temperature of the heat energy to above 85°C. The first stage compression first absorbs heat and evaporates the obtained low-temperature and low-pressure heat energy through the evaporator in the heat pump, enters the first compressor for the first compression, obtains gaseous heat energy with higher temperature, and then cools the refrigerant to a suitable range for the second stage compression. The cooled refrigerant enters the second compressor for further compression and heating, and the temperature of the heat energy is raised to above 85°C.

[0069] 2) The mother pipe is connected to the heat energy using unit and the heat pump, respectively, for transmitting the heat energy after heating treatment by the heat pump to the heat energy using unit.

[0070] For example, the heat pump is connected to the mother pipe, the mother pipe is connected to the heat energy using unit, and the heat energy after heating treatment by the heat pump is first transmitted to the mother pipe, and then the heat energy is transmitted to the heat energy using unit by the mother pipe, realizing effective transmission of heat energy.

[0071] In one possible implementation, the mother pipe can effectively transmit the heat energy after heating treatment by the heat pump to the heat energy using unit. In the heat pump, the refrigerant releases heat and is converted into liquid through the condenser, at which time the heat energy is transferred to hot water or other carrier medium. Then, the hot water or other heat carrier flows through the mother pipe to transmit heat to the heat energy using unit.

[0072] As a key component for heat energy transmission, the mother pipe needs to have high temperature resistance and pressure resistance to ensure that it will not leak or be damaged under high temperature and high pressure, and in order to reduce the loss of heat energy during transmission, the mother pipe can be wrapped with heat insulation material to maintain effective transmission of heat energy.

[0073] In addition, the mother pipe needs to have sufficient flow capacity to ensure that hot water or other heat carriers can flow to the heat energy use unit efficiently and stably.

[0074] The electrolytic hydrogen production heat energy distribution system provided by the embodiment of the present application, the heat energy recovery unit in the electrolytic hydrogen production heat energy distribution system comprises a mother pipe and a heat pump, the heat pump is connected with the electrolytic hydrogen production unit, is used for obtaining the heat energy generated in the hydrogen production process and is subjected to heating treatment, and the mother pipe is connected with the heat energy use unit and the heat pump respectively and is used for transmitting the heat energy subjected to the heating treatment by the heat pump to the heat energy use unit. By connecting the heat pump with the electrolytic hydrogen production unit, the heat energy generated in the hydrogen production process can be effectively recovered, and the recovered heat energy is subjected to heating treatment and then transmitted to the heat energy use unit connected with the heat pump, so that the heat energy can be fully utilized.

[0075] On the basis of the above embodiment, Figure 3 The structure of the electrolytic hydrogen production heat energy distribution system provided by the embodiment of the present application is shown in Figure Three As shown in Figure 3 The heat energy recovery unit further comprises at least one branch pipe.

[0076] Correspondingly, based on the above structure, the following implementation is explained:

[0077] For each branch pipe, the branch pipe is connected with the mother pipe and the sub-use unit respectively and is used for transmitting the heat energy in the mother pipe to the sub-use unit.

[0078] Exemplarily, the heat energy use unit comprises at least one sub-use unit, the mother pipe is connected with the heat energy use unit, and therefore the mother pipe needs to be connected with at least one sub-use unit, the heat energy recovery unit comprises at least one branch pipe, the branch pipe is connected with the mother pipe and the sub-use unit respectively, so that the connection between the mother pipe and at least one sub-use unit can be realized, and then the heat energy in the mother pipe can be transmitted to the sub-use unit through each branch pipe.

[0079] In a possible implementation, the heat energy transmission sequence of each sub-use unit is different, that is, the priority order of heat energy transmission is set for at least one sub-use unit in advance, and the heat energy in the mother pipe is transmitted to at least one sub-use unit by at least one branch pipe according to the preset priority order.

[0080] In a possible implementation, the at least one sub-use unit in the heat energy use unit comprises a phase change heat storage tank, a hot water storage tank, a drying device, a building heating pipe network and a raw water preheater.

[0081] Exemplarily, the phase change heat storage tank is used for storing heat energy and adopts a paraffin-based composite phase change material, and the heat storage density of the phase change material is greater than or equal to 200 MJ / m3 The phase change heat storage tank can store heat energy at 50-75°C for a long time. When receiving the transmitted heat energy, the phase change material in the phase change heat storage tank changes from solid to liquid to store the heat energy, and when the heat energy is needed, the phase change material releases the heat energy and returns to solid state;

[0082] The hot water storage tank is used to store heated water, which is heated by a heat pump, a boiler or other heat sources, and the heated hot water is stored in a well-insulated tank body;

[0083] The drying device is used to remove water or other solvents in materials (such as grains, medicinal materials, etc.), which are heated by hot air, hot air or steam, and the water in the materials is evaporated;

[0084] The building heating pipe network is used to distribute heat energy to various heating terminals (such as radiators, floor heating systems, etc.) in the building, and the heat energy flows through the heating pipes in the form of hot water or steam for heating;

[0085] The raw water preheater is used to preheat raw water to provide heating efficiency for subsequent heating equipment. The raw water usually comes from a cold water source. Before being sent to the main heating equipment, the raw water is preheated by the preheater to increase the temperature of the raw water and reduce the burden of the main heating equipment.

[0086] In one possible implementation, the control unit in the heat energy distribution system for electrolytic hydrogen production is used to adjust the heat energy distribution of at least one sub-use unit according to the weather information after a preset time.

[0087] For example, the weather information has a greater impact on the heat energy distribution of at least one sub-use unit. For example, when the sunlight is sufficient during the day, the heat energy is first distributed to the drying device, and the heat energy stored in the phase change heat storage tank is used for heating at night; when the heating demand is high in winter, the proportion of heat energy distributed to the raw water preheater can be reduced.

[0088] If the weather information after a preset time indicates that the sunlight is sufficient, the heat energy is preferentially distributed to the drying device, and if the weather information after a preset time indicates that the weather is cold, the heat energy reserve is adjusted in advance by the control unit, or the heat energy distribution to the hot water storage tank or the building heating pipe network is increased to meet the future heating demand.

[0089] In one possible implementation, the heat energy distribution system in the heat energy distribution system for electrolytic hydrogen production further comprises a circulating pump;

[0090] Correspondingly, based on the above structure, the following implementation is explained:

[0091] 1) The circulating pump is arranged between the hot water storage tank and the building heating pipe network;

[0092] Exemplarily, a circulating pump is arranged between the hot water storage tank and the building heating pipe network, and the flow of the hot water supplied by the hot water storage tank to the building heating pipe network can be adjusted.

[0093] In a possible implementation, a variable frequency circulating pump can be adopted, and the motor speed can be adjusted according to the actual load condition through the variable frequency technology, so that the energy waste of the traditional circulating pump under a low load can be avoided; and the flow of the hot water can be accurately controlled by adjusting the speed of the pump.

[0094] 2) The control unit is configured to send an adjustment instruction to the circulating pump, and the circulating pump adjusts the flow of the hot water in the hot water storage tank to the building heating pipe network according to the adjustment instruction.

[0095] Exemplarily, according to the flow of the hot water required by the building heating pipe network, the control unit sends an adjustment instruction to the circulating pump, and the circulating pump adjusts the flow of the hot water in the hot water storage tank to the building heating pipe network according to the instruction, so that the flow of the hot water can be quickly adjusted.

[0096] The electrolytic hydrogen production heat energy distribution system provided in the embodiment of the present application, the heat energy use unit in the electrolytic hydrogen production heat energy distribution system comprises: at least one sub-use unit; the heat energy recovery unit further comprises: at least one branch pipeline, for each branch pipeline, the branch pipeline is connected with the mother pipeline and the sub-use unit respectively, and is used for transmitting the heat energy in the mother pipeline to the sub-use unit. By applying the technical solution of the embodiment of the present application, the heat energy in the mother pipeline connected with each branch pipeline can be transmitted to each sub-use unit in stages through at least one sub-use unit arranged in the heat energy use unit and at least one branch pipeline arranged in the heat energy recovery unit, so that the reasonable distribution and application of heat energy are ensured, and the utilization efficiency of heat energy is improved.

[0097] On the basis of the above embodiment, Figure 4 The structure of the electrolytic hydrogen production heat energy distribution system provided in the embodiment of the present application is shown in Figure Four . As Figure 4 shown, the heat energy distribution system further comprises: at least one temperature sensor, at least one flow regulator;

[0098] Correspondingly, based on the above structure, the following implementation explanations are given:

[0099] 1) For each branch pipeline, the temperature sensor is connected with the control unit, and is used for collecting the first temperature in the branch pipeline and transmitting the first temperature to the control unit;

[0100] Exemplarily, a temperature sensor is arranged between each branch pipeline and each sub-use unit, for each branch pipeline, the temperature sensor is connected with the branch pipeline, collects the first temperature in the branch pipeline, and the temperature sensor is further connected with the control unit, and can transmit the first temperature to the control unit.

[0101] 2) the control unit is connected with the flow regulator, and is configured to adjust the flow of the heat carrier in the branch pipe according to the first temperature and the temperature threshold corresponding to the sub-use unit.

[0102] For example, the temperature thresholds corresponding to different sub-use units are different, and the flow regulator is arranged between each branch pipe and each sub-use unit, and the control unit is connected with the flow regulator, compares the first temperature with the temperature threshold corresponding to the sub-use unit, and adjusts the flow of the heat carrier in the branch pipe according to the comparison result.

[0103] In a possible implementation, the temperature threshold corresponding to the sub-use unit includes an upper temperature limit value and a lower temperature limit value, if the first temperature is greater than the upper temperature limit value corresponding to the sub-use unit, the flow of the heat carrier in the branch pipe is reduced until the first temperature is less than or equal to the upper temperature limit value corresponding to the sub-use unit, and if the first temperature is less than the lower temperature limit value corresponding to the sub-use unit, the flow of the heat carrier in the branch pipe is increased until the first temperature is greater than or equal to the lower temperature limit value corresponding to the sub-use unit.

[0104] In a possible implementation, the control unit is configured to control the switching time of the at least one flow regulator and adjust the flow of the heat carrier in the branch pipe according to the priority set.

[0105] The priority set includes at least one sub-use unit arranged in a priority order.

[0106] For example, the priority orders of different sub-use units are different, the control unit controls the switching order and the switching time of the at least one flow regulator connected with the at least one sub-use unit according to the priority set including the at least one sub-use unit arranged in the priority order, and adjusts the flow of the heat carrier in the branch pipe connected with the at least one sub-use unit.

[0107] In a possible implementation, on the basis of the above embodiment, the priority set arranged in the priority order from high to low includes: a drying device, a building heating pipe network, a raw water preheater, a phase change heat storage tank, and a hot water storage tank.

[0108] The electrolytic hydrogen production heat energy distribution system provided by the embodiment of the present application further comprises at least one temperature sensor and at least one flow regulator. For each branch pipe, the temperature sensor is connected to the control unit and used to collect the first temperature in the branch pipe and transmit the first temperature to the control unit. The control unit is connected to the flow regulator and used to adjust the flow of the heat carrier in the branch pipe according to the first temperature and the temperature threshold corresponding to the sub-use unit. By applying the technical solution of the embodiment of the present application, the first temperature in the branch pipe can be monitored in real time by arranging the temperature sensor on each branch pipe, and the first temperature is transmitted to the control unit connected to the temperature sensor. The flow of the heat carrier in the branch pipe is adjusted by the flow regulator controlled by the control unit according to the first temperature and the temperature threshold corresponding to the sub-use unit, so that the temperature of the sub-use unit connected to each branch pipe is within the temperature threshold, and the temperature is prevented from being too high or too low, which causes the sub-use unit to be unable to normally use the heat energy.

[0109] On the basis of the above embodiment, Figure 5 The structure of the electrolytic hydrogen production heat energy distribution system provided by the embodiment of the present application is shown in Figure Five . As Figure 5 shown, the electrolytic hydrogen production unit comprises an electrolytic cell, a gas-liquid separator and a heat exchanger connected in sequence.

[0110] Correspondingly, based on the above structure, the following implementation explanations are given:

[0111] 1) The electrolytic cell is connected to the wind-solar complementary power supply unit, and is used to perform the water electrolysis process in the hydrogen production process according to the electric energy.

[0112] Illustratively, the wind-solar complementary power supply unit is connected to the electrolytic cell to provide electric energy for the electrolytic cell, and the electrolytic cell performs the water electrolysis hydrogen production according to the electric energy provided by the wind-solar complementary power supply unit.

[0113] In a possible implementation, the electrolytic cell has two electrodes, an anode and a cathode, at two ends. In the electrolytic cell, water molecules undergo reduction and oxidation reactions under the action of an electric field to generate oxygen and hydrogen.

[0114] Illustratively, the water electrolysis hydrogen production can be performed in the way of alkaline electrolysis or proton exchange membrane electrolysis. The alkaline electrolysis uses an alkaline solution (such as potassium hydroxide solution) as an electrolyte to realize the decomposition of water by electrodes in the electrolytic cell, and has low cost and stable operation. The proton exchange membrane electrolysis uses a solid polymer membrane as an electrolyte, and has high hydrogen production efficiency and relatively high cost.

[0115] 2) The heat exchanger is connected to the heat energy recovery unit, and is used to transfer the heat energy generated by the gas-liquid separator to the heat energy recovery unit.

[0116] Illustratively, the electrolytic cell generates oxygen, hydrogen and electrolyte after electrolyzing water, and the gas and liquid need to be separated by a gas-liquid separator, and heat energy is generated in the separation process. At this time, the heat exchanger is connected to the gas-liquid separator to collect the generated heat energy, and the heat energy is transmitted to the heat energy recovery unit.

[0117] In a possible implementation, the heat exchanger adopts a spiral plate heat exchanger, which increases the heat exchange area through spiral plates to improve the heat exchange efficiency, and the spiral plate heat exchanger adopts titanium alloy material, which can adapt to high-temperature electrolyte of 60-90℃ and has good corrosion resistance.

[0118] The electrolytic hydrogen production heat energy distribution system provided by the embodiment of the present application, the electrolytic hydrogen production unit in the electrolytic hydrogen production heat energy distribution system comprises: electrolytic cell, gas-liquid separator and heat exchanger connected in sequence, the electrolytic cell is connected with the wind-solar complementary power supply unit, and is used for electrolyzing water in the hydrogen production process according to electric energy, the heat exchanger is connected with the heat energy recovery unit, and is used for transmitting the heat energy generated by the gas-liquid separator to the heat energy recovery unit. Through the electrolytic cell, the water is electrolyzed by using electric energy to produce hydrogen, the gas and liquid obtained by electrolysis are separated by the gas-liquid separator, then the heat exchanger effectively recovers the heat energy generated in the separation process of the gas and liquid, and the heat exchanger is connected with the heat energy recovery unit, so that the heat energy recovered from the gas-liquid separator can be transmitted to the heat energy recovery unit.

[0119] On the basis of the above embodiment, Figure 6 The structure of the electrolytic hydrogen production heat energy distribution system provided by the embodiment of the present application is shown in Figure Six . As Figure 6 shown, the wind-solar complementary power supply unit comprises: wind-solar power generation unit, energy storage battery, super capacitor and bidirectional converter connected in sequence;

[0120] Correspondingly, based on the above structure, the following implementation is explained:

[0121] 1) The wind-solar power generation unit is used for generating electric energy;

[0122] Illustratively, the wind-solar power generation unit converts wind energy and solar energy into electric energy.

[0123] In a possible implementation, the wind-solar power generation unit comprises a wind turbine and a photovoltaic array. The wind turbine captures wind energy through blades, converts the wind energy into mechanical energy, and then converts the mechanical energy into electric energy through a generator. The photovoltaic array directly converts solar energy into electric energy through the photovoltaic effect of semiconductor materials.

[0124] 2) The energy storage battery is used for transmitting the generated electric energy greater than a preset capacity to the super capacitor;

[0125] For example, the energy storage battery is mainly used for storing the power meeting the preset capacity and transmitting the generated power greater than the preset capacity to the super capacitor.

[0126] In a possible implementation, the energy storage battery stores and releases the power through an electrochemical reaction. In the charging process, when the wind power or the solar power is excessive, the excess power is input to the battery through the charge and discharge controller, so that a reversible chemical reaction (for example, lithium ions in a lithium ion battery are embedded from the positive electrode to the negative electrode) occurs in the battery, and the power is converted into chemical energy for storage. In the discharging process, when the power generation is insufficient, the chemical reaction in the battery is reversed (for example, lithium ions are de-embedded from the negative electrode to the positive electrode), the chemical energy is converted into the power, and the power is supplied to the electrolysis unit through the controller to ensure the continuous and stable operation of the electrolytic tank.

[0127] In addition, the energy storage battery can be used to suppress the hour-level fluctuation in the wind-solar power generation process and ensure the stable input power of the electrolytic tank.

[0128] 3) The super capacitor is used to smooth the fluctuation of the power and transmit the smoothed power to the bidirectional converter.

[0129] For example, the super capacitor is mainly used to smooth the second-level fluctuation of the power and ensure that the input power change rate of the electrolytic tank is less than 5% / minute.

[0130] In a possible implementation, the super capacitor is used to store the power, and there is no chemical reaction in the energy storage process, and the reaction process is reversible.

[0131] 4) The bidirectional converter is connected with the electrolytic tank and is used for converting the power and transmitting the power to the electrolytic tank.

[0132] For example, the bidirectional converter is connected with the electrolytic tank and is mainly used for converting the power, converting the power into a form suitable for the electrolytic tank, and then transmitting the adjusted power to the electrolytic tank.

[0133] In a possible implementation, when the wind-solar power generation unit (the wind power is alternating current, and the solar power is direct current) or the energy storage device (for example, the energy storage battery and the super capacitor are direct current) supplies power to the electrolytic tank, the converter converts the input alternating current (or unstable direct current) into stable direct current meeting the requirements of the electrolytic tank, and adjusts the voltage and the current to the rated working range of the electrolytic tank (for example, the alkaline electrolytic tank usually needs a tank voltage of 1.8-2.0 V, and the proton exchange membrane electrolytic tank needs 1.6-2.2 V).

[0134] In addition, in a special scenario (such as electrolytic cell shutdown, wind and light power surplus, and energy storage full), the converter can work in reverse, converting the direct current in the energy storage device into alternating current, feeding back to the power grid or used for other AC loads (such as heat pumps, auxiliary pumps), realizing flexible deployment of energy.

[0135] The electrolytic hydrogen production heat energy distribution system provided by the embodiment of the present application, the wind-solar complementary power supply unit in the electrolytic hydrogen production heat energy distribution system comprises: a wind-solar power generation unit, an energy storage battery, a super capacitor and a bidirectional converter connected in sequence, the wind-solar power generation unit is used to generate electric energy, the energy storage battery is used to transmit the electric energy greater than a preset capacity generated by the wind-solar power generation unit to the super capacitor, the super capacitor is used to smooth the fluctuation of the electric energy and transmit the smoothed electric energy to the bidirectional converter, and the bidirectional converter is connected with an electrolytic cell and used to convert the electric energy and transmit the electric energy to the electrolytic cell. By combining wind power generation and photovoltaic power generation through the wind-solar power generation unit to generate electricity, the technical solution of the embodiment of the present application can effectively improve the power generation efficiency and power generation capacity. The electric energy greater than the preset capacity generated by the wind-solar power generation unit is transmitted to the super capacitor by the energy storage battery, and the fluctuation of the electric energy is further smoothed by the super capacitor, which is beneficial to suppressing the fluctuation in the wind-solar power generation process and ensuring the stable operation of the electrolytic cell. The electrolytic cell is connected through the bidirectional converter, the electric energy is converted, the electric energy is converted into stable current and voltage suitable for the electrolytic cell, and the stability and efficiency of the subsequent water electrolysis process are ensured

[0136] Figure 7 The structure of the electrolytic hydrogen production heat energy distribution system provided by the embodiment of the present application is shown in Figure Seven . As Figure 7 shown, in a possible implementation, the electrolytic hydrogen production heat energy distribution system comprises: a wind-solar complementary power supply unit, an electrolytic hydrogen production unit, a heat energy use unit, a control unit and a heat energy recovery unit.

[0137] The wind-solar complementary power supply unit is connected with the electrolytic hydrogen production unit and used to provide stable electric energy for the electrolytic hydrogen production unit, comprising: a wind-solar power generation unit, an energy storage battery, a super capacitor and a bidirectional converter connected in sequence, the wind-solar power generation unit comprises a wind turbine and a photovoltaic array;

[0138] The electrolytic hydrogen production unit is connected with the wind-solar complementary power supply unit and the heat energy recovery unit respectively, used to perform the water electrolysis process in the hydrogen production process according to the electric energy provided by the wind-solar complementary power supply unit and transmit the heat energy generated in the water electrolysis process to the heat energy recovery unit, and the electrolytic hydrogen production unit comprises: an electrolytic cell, a gas-liquid separator and a heat exchanger connected in sequence;

[0139] The heat energy recovery unit is connected with the electrolytic hydrogen production unit, is used for obtaining the heat energy generated in the hydrogen production process, and is connected with the control unit and the heat energy use unit respectively, is used for distributing the heat energy to the heat energy use unit in response to the control of the control unit, and the heat energy recovery unit comprises a main pipe, a heat pump and at least one branch pipe.

[0140] The heat energy use unit is connected with the heat energy recovery unit, is used for actually applying the heat energy distributed by the heat energy recovery unit, and comprises at least one sub-use unit, wherein the at least one sub-use unit comprises a phase change heat storage tank, a hot water storage tank, a drying device, a building heating pipe network and a raw water preheater.

[0141] The control unit is connected with the heat energy recovery unit, is used for controlling the heat energy recovery unit to distribute the heat energy to the heat energy use unit, and comprises an editable logic controller.

[0142] In addition, the heat energy distribution system for electrolytic hydrogen production further comprises at least one temperature sensor, at least one flow regulator and a circulating pump.

[0143] The temperature sensor is connected with the control unit, is used for collecting a first temperature in the branch pipe and transmitting the first temperature to the control unit.

[0144] The control unit is connected with the flow regulator, is used for adjusting the flow of the heat carrier in the branch pipe according to the first temperature and a temperature threshold value corresponding to the sub-use unit, and the flow regulator can be an electric regulating valve.

[0145] The circulating pump is arranged between the hot water storage tank and the building heating pipe network, the control unit sends an adjusting instruction to the circulating pump, and the circulating pump adjusts the flow of the hot water in the hot water storage tank to the building heating pipe network according to the adjusting instruction.

[0146] The embodiment of the application further provides a computer readable storage medium, and the computer readable storage medium stores computer instructions, and when the computer instructions run on a computer, the computer executes the related steps.

[0147] The computer readable storage medium can be realized by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory, an electrically erasable programmable read-only memory, a programmable read-only memory, a read-only memory, a magnetic memory, a flash memory, a magnetic disk or an optical disk.

[0148] Optionally, a readable storage medium is coupled to the processor, such that the processor is enabled to read information from, and write information to, the readable storage medium. Of course, the readable storage medium can be a part of the processor. The processor and the readable storage medium can be located in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium can also be located in a device.

[0149] The embodiment of the present application further provides a computer program product, which comprises a computer program stored in a computer readable storage medium, at least one processor can read the computer program from the computer readable storage medium, and the at least one processor executes the computer program to implement the above steps.

[0150] Finally, it should be noted that: other embodiments of the application will be readily apparent to those skilled in the art in view of the description and practice of the application disclosed herein. The application is intended to cover any variations, uses or adaptive changes of the application following the general principles of the application and including common knowledge or conventional technical means in the art not disclosed by the application, and is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the application is only limited by the appended claims.

Claims

1. A thermal energy distribution system for electrolytic hydrogen production, characterized by, The application relates to a heat energy distribution system. The heat energy distribution system comprises a wind-solar complementary power supply unit, an electrolytic hydrogen production unit, a heat energy use unit, a control unit and a heat energy recovery unit. The electrolytic hydrogen production unit is connected with the wind-solar complementary power supply unit and is used for hydrogen production treatment based on the electric energy provided by the wind-solar complementary power supply unit. The heat energy recovery unit is connected with the electrolytic hydrogen production unit and is used for obtaining heat energy generated in the hydrogen production treatment process. The heat energy recovery unit is connected with the control unit and the heat energy use unit respectively, and the control unit is used for controlling the heat energy recovery unit to distribute the heat energy to the heat energy use unit.

2. The system of claim 1, wherein, The heat energy recovery unit comprises a main pipe and a heat pump. The heat pump is connected with the electrolytic hydrogen production unit and is used for obtaining heat energy generated in the hydrogen production treatment process and performing heating treatment. The main pipe is connected with the heat energy use unit and the heat pump respectively, and is used for transmitting the heat energy after the heating treatment of the heat pump to the heat energy use unit.

3. The system of claim 2, wherein, The heat energy use unit comprises at least one sub-use unit, and the heat energy recovery unit further comprises at least one branch pipe. For each branch pipe, the branch pipe is connected with the main pipe and the sub-use unit respectively, and is used for transmitting the heat energy in the main pipe to the sub-use unit.

4. The system of claim 3, wherein, The heat energy distribution system further comprises at least one temperature sensor and at least one flow regulator. For each branch pipe, the temperature sensor is connected with the control unit and is used for collecting a first temperature in the branch pipe and transmitting the first temperature to the control unit. The control unit is connected with the flow regulator and is used for adjusting the flow of the heat corresponding carrier in the branch pipe according to the first temperature and a temperature threshold value corresponding to the sub-use unit.

5. The system of claim 4, wherein, The control unit is used for controlling the switching time of the at least one flow regulator and adjusting the flow of the heat corresponding carrier in the branch pipe according to a priority set. The priority set comprises at least one sub-use unit arranged in a priority order.

6. The system according to any one of claims 1-5, characterized in that, The electrolytic hydrogen production unit comprises an electrolytic cell, a gas-liquid separator and a heat exchanger connected in sequence. The electrolytic cell is connected with the wind-solar complementary power supply unit and is used for water electrolysis process in the hydrogen production treatment according to the electric energy. The heat exchanger is connected with the heat energy recovery unit and is used for transmitting the heat energy generated by the gas-liquid separator to the heat energy recovery unit.

7. The system of claim 6, wherein, The wind-solar complementary power supply unit comprises a wind-solar power generation unit, an energy storage battery, a super capacitor and a bidirectional converter connected in sequence. The wind-solar power generation unit is used for generating electric energy. The energy storage battery is used for transmitting the generated electric energy greater than a preset capacity to the super capacitor. The super capacitor is used for smoothing the fluctuation of the electric energy and transmitting the smoothed electric energy to the bidirectional converter. The bidirectional converter is connected with the electrolytic cell and is used for converting the electric energy and transmitting the converted electric energy to the electrolytic cell.

8. The system of any one of claims 1-5, wherein, At least one sub-use unit in the heat energy use unit comprises a phase change heat storage tank, a hot water storage tank, a drying device, a building heating pipe network and a raw water preheater. 9.The system of claim 8, wherein the control unit is configured to adjust the heat energy distribution of the at least one sub-use unit according to weather information after a preset time length.

10. The system of claim 8, wherein, The heat energy distribution system further comprises a circulating pump. The circulating pump is arranged between the hot water storage tank and the building heating pipe network. The control unit is configured to send an adjustment instruction to the circulating pump, and the circulating pump adjusts the flow of hot water in the hot water storage tank to the building heating pipe network according to the adjustment instruction.

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