Electrolytic hydrogen production system, electrolytic hydrogen production starting method, storage medium and electronic equipment

Abstract

The invention relates to an electrolytic hydrogen production system, an electrolytic hydrogen production starting method, a storage medium and electronic equipment, the electrolytic hydrogen production system comprises a controller, an electrolytic bath, an electrolyte storage tank, a separator and at least one valve, the volume of the electrolyte storage tank is smaller than that of the separator, and the controller is connected with the valve and connected with the electrolytic bath. The controller is used for obtaining the target temperature of the electrolyte at the outlet of the electrolytic bath, determining the opening degree of at least one valve according to the target temperature, so that the electrolytic bath and the electrolyte storage tank form a first hydrogen production circulation loop, and the electrolytic bath and the electrolyte storage tank form the first hydrogen production circulation loop through the opening degree of the at least one valve; as the volume of the electrolyte storage tank is smaller than that of the separator, the electrolytic bath and the electrolyte can be rapidly heated to the preset temperature through the first hydrogen production circulation loop, the hydrogen production efficiency of the electrolytic hydrogen production system is effectively improved, and the cold start time of the electrolytic hydrogen production system is shortened.

Description

Technical Field

[0001] The present disclosure relates to the technical field of hydrogen production by electrolysis, and in particular to a hydrogen production by electrolysis system, a hydrogen production by electrolysis start-up method, a storage medium and an electronic device. Background Art

[0002] With the continuous development of new energy technologies, the preparation of hydrogen as a new energy source has received much attention. Hydrogen production technologies include alkaline water electrolysis, proton exchange membrane water electrolysis, anion exchange membrane water electrolysis, and solid oxide electrolysis. Alkaline electrolyzers are currently the only water electrolysis hydrogen production equipment that meets large-scale engineering applications. During the cold start process, it is necessary to apply a DC voltage to the electrolyzer, and the voltage will be released in the form of heat energy to heat the electrolyzer and the electrolyte in the electrolyzer, and the temperature will slowly rise. However, alkaline electrolyzers generally operate above 80°C, and the gas-liquid separation tank is large, with a large amount of alkali solution and a large heat capacity of the alkali solution. It is impossible to quickly heat the electrolyzer and the electrolyte in the electrolyzer to the set temperature, which is not conducive to the preparation of hydrogen. Summary of the invention

[0003] In order to achieve the above objectives, the present disclosure provides an electrolytic hydrogen production system, an electrolytic hydrogen production startup method, a storage medium and an electronic device.

[0004] A first aspect of the present disclosure provides an electrolytic hydrogen production system, the electrolytic hydrogen production system comprising: a controller, an electrolyzer, an electrolyte storage tank, a separator, and at least one valve, wherein the volume of the electrolyte storage tank is smaller than the volume of the separator;

[0005] The first end of the separator is connected to the first end of the electrolyte storage tank and the inlet of the electrolytic cell, and the second end of the separator is connected to the second end of the electrolyte storage tank and the outlet of the electrolytic cell;

[0006] The second end of the electrolyte storage tank is also connected to the outlet of the electrolytic cell;

[0007] The controller is connected to the valve and is used to obtain the target temperature of the electrolyte at the outlet of the electrolyzer; based on the target temperature, the opening of the at least one valve is determined so that the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop.

[0008] Optionally, the electrolysis hydrogen production system comprises: a first valve and a second valve;

[0009] The first valve and the second valve are connected in parallel between the first end of the separator and the first end of the electrolyte storage tank and the inlet of the electrolytic cell;

[0010] The first valve is used to adjust a first flow rate of the electrolyte flowing from the separator into the electrolytic cell; the second valve is used to adjust a second flow rate of the electrolyte flowing from the separator into the electrolytic cell, wherein the second flow rate is greater than the first flow rate;

[0011] The controller is connected to the first valve and the second valve, and is used to determine that the first valve is open if the target temperature is greater than a first preset temperature threshold; determine that the first valve is closed if the target temperature is less than a second preset temperature threshold; when the first valve is open, if the target temperature is greater than the first preset temperature threshold, determine that the first valve is closed and the second valve is opened, wherein the first preset temperature threshold is greater than the second preset temperature threshold.

[0012] Optionally, the electrolysis hydrogen production system includes: a third valve;

[0013] The third valve is connected between the first end of the separator and the first end of the electrolyte storage tank and the inlet of the electrolytic cell;

[0014] The controller is connected to the third valve and is used to determine the opening of the third valve according to the target temperature so as to control the flow rate of the electrolyte input from the separator to the electrolytic cell.

[0015] Optionally, the electrolysis hydrogen production system further includes: a fourth valve, a fifth valve and a sixth valve; the separator includes: an oxygen side separator and a hydrogen side separator; the electrolyte storage tank includes: an oxygen side electrolyte storage tank and a hydrogen side electrolyte storage tank;

[0016] The first end of the fourth valve is connected to the first end of the oxygen-side electrolyte storage tank and the first end of the hydrogen-side electrolyte storage tank, and the second end of the fourth valve is connected to the inlet of the electrolyzer, the first end of the oxygen-side separator and the first end of the hydrogen-side separator;

[0017] The second end of the oxygen-side separator is connected to the second end of the oxygen-side electrolyte storage tank and the oxygen-side outlet of the electrolyzer, and the second end of the hydrogen-side separator is connected to the second end of the hydrogen-side electrolyte storage tank and the hydrogen-side outlet of the electrolyzer;

[0018] The second end of the oxygen side electrolyte storage tank is also connected to the oxygen side outlet of the electrolytic cell through the fifth valve, and the second end of the oxygen side electrolyte storage tank is also connected to the oxygen side outlet of the electrolytic cell through the sixth valve.

[0019] Optionally, the controller is also connected to the fourth valve, the fifth valve and the sixth valve, and is also used to determine that the fourth valve, the fifth valve and the sixth valve are all opened when the electrolysis hydrogen production system is started, so that the electrolyzer and the oxygen side electrolyte storage tank and the hydrogen side electrolyte storage tank form the first hydrogen production circulation loop.

[0020] Optionally, the electrolysis hydrogen production system further includes: a seventh valve and an eighth valve;

[0021] The seventh valve is connected between the second end of the oxygen-side separator and the oxygen-side outlet of the electrolyzer;

[0022] The eighth valve is connected between the second end of the hydrogen side separator and the hydrogen side outlet of the electrolyzer;

[0023] The controller is also connected to the seventh valve and the eighth valve, and is also used to determine that the fourth valve, the fifth valve and the sixth valve are all closed, and the seventh valve and the eighth valve are opened when the electrolytic hydrogen production system is in the first hydrogen production circulation loop and the oxygen side separator and the hydrogen side separator input the electrolyte to the electrolyzer, if the target temperature is greater than a first preset temperature threshold, so that the electrolyzer, the oxygen side separator and the hydrogen side separator form the second hydrogen production circulation loop.

[0024] Optionally, the electrolysis hydrogen production system further includes: a heat exchange device, a ninth valve and a tenth valve;

[0025] The first end of the heat exchange device is connected to the seventh valve and the oxygen side outlet of the electrolyzer through the ninth valve, the second end of the heat exchange device is connected to the eighth valve and the hydrogen side outlet of the electrolyzer through the tenth valve, the third end of the heat exchange device is connected to the second end of the oxygen side separator, and the fourth end of the heat exchange device is connected to the second end of the hydrogen side separator;

[0026] The controller is also connected to the ninth valve and the tenth valve, and is used to determine that the seventh valve and the eighth valve are closed, and the ninth valve and the tenth valve are opened when the target temperature is greater than the first preset temperature threshold when the electrolysis hydrogen production system is in the second hydrogen production cycle, so as to reduce the temperature through the heat exchange device.

[0027] A second aspect of the present disclosure provides a method for starting hydrogen production by electrolysis, which is applied to a hydrogen production system by electrolysis, wherein the hydrogen production system by electrolysis comprises: an electrolyzer, an electrolyte storage tank, a separator, and at least one valve, wherein the volume of the electrolyte storage tank is smaller than the volume of the separator; the first end of the separator is connected to the first end of the electrolyte storage tank and the inlet of the electrolyzer, the second end of the separator is connected to the second end of the electrolyte storage tank and the outlet of the electrolyzer; the second end of the electrolyte storage tank is also connected to the outlet of the electrolyzer;

[0028] The method comprises:

[0029] Obtaining a target temperature of the electrolyte at the outlet of the electrolytic cell;

[0030] The opening degree of the at least one valve is determined according to the target temperature so that the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop.

[0031] Optionally, the electrolysis hydrogen production system includes: a first valve and a second valve; the first valve and the second valve are connected in parallel and connected between the first end of the separator, the first end of the electrolyte storage tank and the inlet of the electrolyzer; the first valve is used to adjust a first flow rate of the electrolyte flowing from the separator into the electrolyzer; the second valve is used to adjust a second flow rate of the electrolyte flowing from the separator into the electrolyzer, wherein the second flow rate is greater than the first flow rate;

[0032] Determining the opening of the at least one valve according to the target temperature includes:

[0033] If the target temperature is greater than a first preset temperature threshold, it is determined that the first valve is opened; if the target temperature is less than a second preset temperature threshold, it is determined that the first valve is closed; when the first valve is open, if the target temperature is greater than the first preset temperature threshold, it is determined that the first valve is closed and the second valve is opened, wherein the first preset temperature threshold is greater than the second preset temperature threshold.

[0034] Optionally, the electrolysis hydrogen production system comprises: a third valve; the third valve is connected between the first end of the separator and the first end of the electrolyte storage tank and the inlet of the electrolyzer;

[0035] Determining the opening of the at least one valve according to the target temperature further includes:

[0036] The opening degree of the third valve is determined according to the target temperature to control the flow rate of the electrolyte input from the separator to the electrolytic cell.

[0037] Optionally, the electrolytic hydrogen production system further includes: a fourth valve, a fifth valve and a sixth valve; the separator includes: an oxygen side separator and a hydrogen side separator; the electrolyte storage tank includes: an oxygen side electrolyte storage tank and a hydrogen side electrolyte storage tank; the first end of the fourth valve is connected to the first end of the oxygen side electrolyte storage tank and the first end of the hydrogen side electrolyte storage tank, and the second end of the fourth valve is connected to the inlet of the electrolyzer, the first end of the oxygen side separator and the first end of the hydrogen side separator; the second end of the oxygen side separator is connected to the second end of the oxygen side electrolyte storage tank and the oxygen side outlet of the electrolyzer, and the second end of the hydrogen side separator is connected to the second end of the hydrogen side electrolyte storage tank and the hydrogen side outlet of the electrolyzer; the second end of the oxygen side electrolyte storage tank is also connected to the oxygen side outlet of the electrolyzer through the fifth valve, and the second end of the side electrolyte storage tank is also connected to the side outlet of the electrolyzer through the sixth valve;

[0038] The method further comprises:

[0039] When the electrolytic hydrogen production system is started, the fourth valve, the fifth valve and the sixth valve are all opened to allow the electrolytic cell, the oxygen-side electrolyte storage tank and the hydrogen-side electrolyte storage tank to form the first hydrogen production circulation loop.

[0040] Optionally, the electrolysis hydrogen production system further includes: a seventh valve and an eighth valve; the seventh valve is connected between the second end of the oxygen side separator and the oxygen side outlet of the electrolyzer; the eighth valve is connected between the second end of the hydrogen side separator and the hydrogen side outlet of the electrolyzer;

[0041] The method further comprises:

[0042] When the electrolytic hydrogen production system is in the first hydrogen production cycle and the oxygen side separator and the hydrogen side separator input the electrolyte to the electrolyzer, if the target temperature is greater than a first preset temperature threshold, it is determined that the fourth valve, the fifth valve and the sixth valve are all closed, and the seventh valve and the eighth valve are opened, so that the electrolyzer, the oxygen side separator and the hydrogen side separator form the second hydrogen production cycle.

[0043] Optionally, the electrolysis hydrogen production system further includes: a heat exchange device, a ninth valve and a tenth valve; the first end of the heat exchange device is connected to the seventh valve and the oxygen side outlet of the electrolyzer through the ninth valve, the second end of the heat exchange device is connected to the eighth valve and the hydrogen side outlet of the electrolyzer through the tenth valve, the third end of the heat exchange device is connected to the second end of the oxygen side separator, and the fourth end of the heat exchange device is connected to the second end of the hydrogen side separator;

[0044] The method further comprises:

[0045] When the electrolytic hydrogen production system is in the second hydrogen production cycle, if the target temperature is greater than the first preset temperature threshold, it is determined that the seventh valve and the eighth valve are closed, and the ninth valve and the tenth valve are opened.

[0046] The third aspect of the present disclosure provides a non-temporary computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in the second aspect of the present disclosure.

[0047] A third aspect of the present disclosure provides an electronic device, including:

[0048] a memory having a computer program stored thereon;

[0049] A processor is used to execute the computer program in the memory to implement the steps of the method described in the second aspect of the present disclosure.

[0050] According to the above technical solution, the electrolytic hydrogen production system includes: a controller, an electrolyzer, an electrolyte storage tank, a separator and at least one valve, wherein the volume of the electrolyte storage tank is smaller than the volume of the separator, the first end of the separator is connected to the first end of the electrolyte storage tank and the inlet of the electrolyzer, the second end of the separator is connected to the second end of the electrolyte storage tank and the outlet of the electrolyzer, the second end of the electrolyte storage tank is also connected to the outlet of the electrolyzer, and the controller is connected to the valve for obtaining the electrolyte. The target temperature of the electrolyte at the outlet of the electrolytic cell is determined based on the target temperature, and the opening of the at least one valve is determined so that the electrolytic cell and the electrolyte storage tank form a first hydrogen production circulation loop. The electrolytic cell and the electrolyte storage tank form a first hydrogen production circulation loop through the opening of at least one valve. Since the volume of the electrolyte storage tank is smaller than the volume of the separator, the electrolytic cell and the electrolyte can be quickly heated to a preset temperature through the first hydrogen production circulation loop, which effectively improves the hydrogen production efficiency of the electrolytic hydrogen production system and reduces the cold start time of the electrolytic hydrogen production system.

[0051] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0053] Figure 1is a connection schematic diagram of a hydrogen production system by electrolysis according to an exemplary embodiment of the present disclosure;

[0054] Figure 2 is a connection schematic diagram of another electrolysis hydrogen production system according to an exemplary embodiment of the present disclosure;

[0055] Figure 3 is a flow chart of a method for starting hydrogen production by electrolysis according to an exemplary embodiment of the present disclosure;

[0056] Figure 4 is a flow chart of another method for starting hydrogen production by electrolysis according to an exemplary embodiment of the present disclosure;

[0057] Figure 5 is a block diagram of an electronic device according to an exemplary embodiment;

[0058] Figure 6 It is a block diagram of an electronic device according to an exemplary embodiment.

[0059] Description of Reference Numerals

[0060] 101 electrolytic cell 102 electrolyte storage tank

[0061] 1021 Oxygen side electrolyte storage tank 1022 Hydrogen side electrolyte storage tank

[0062] 103 Separator 1031 Oxygen side separator

[0063] 1032 Hydrogen side separator 104 First valve

[0064] 105 Second valve 106 Fourth valve

[0065] 107 Fifth valve 108 Sixth valve

[0066] 109 Seventh valve 110 Eighth valve

[0067] 111 Heat exchange device 112 The ninth valve

[0068] 113 The tenth valve DETAILED DESCRIPTION

[0069] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0070] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0071] Figure 1 is a connection diagram of a hydrogen production system by electrolysis according to an exemplary embodiment of the present disclosure. Figure 1 The electrolytic hydrogen production system may include: a controller, an electrolyzer 101, an electrolyte storage tank 102, a separator 103 and at least one valve, wherein the volume of the electrolyte storage tank 102 is smaller than the volume of the separator 103; the first end of the separator 103 may be connected to the first end of the electrolyte storage tank 102 and the inlet of the electrolyzer 101, and the second end of the separator 103 may be connected to the second end of the electrolyte storage tank 102 and the outlet of the electrolyzer 101; the second end of the electrolyte storage tank 102 may also be connected to the outlet of the electrolyzer 101; the controller may be connected to the valve to obtain the target temperature of the electrolyte at the outlet of the electrolyzer 101; and the opening of the at least one valve is determined according to the target temperature so that the electrolyzer 101 and the electrolyte storage tank 102 form a first hydrogen production circulation loop.

[0072] The volume of the electrolyte storage tank 102 is much smaller than the volume of the separator 103. For example, the volume of the electrolyte storage tank 102 may be 10% or 5% of the volume of the separator 103. The target temperature may be obtained by collecting the temperature of the electrolyte through a temperature sensor provided at the outlet of the electrolytic cell 101. For example, the temperature value collected by the temperature sensor may be used as the target temperature, or the average value of multiple temperature values ​​collected by the temperature sensor may be calculated and used as the target temperature.

[0073] It should be noted that the electrolyte storage tank 102 can be used to store the gas-liquid mixture flowing out of the electrolyzer 101 when the electrolytic hydrogen production system is in the first hydrogen production cycle, and to transport the gas in the gas-liquid mixture to the separator 103 through a pipeline, and to heat the electrolyte in the separator 103 by the waste heat of the gas. The separator 103 can be used to provide the electrolyte to the electrolyzer 101 when the electrolytic hydrogen production system is in the first hydrogen production cycle, and to cool down the electrolyte input into the electrolyzer 101 from the electrolyte storage tank 102, and to transport the gas transported by the electrolyte storage tank 102 out through the gas outlet; when the electrolytic hydrogen production system is in the second hydrogen production cycle, the gas-liquid mixture flowing out of the electrolyzer 101 is stored, and the gas in the gas-liquid mixture is separated out. The controller can also be used to obtain the current target temperature of the electrolyte at the inlet of the electrolyzer 101, and determine the opening of at least one valve according to the current temperature, so that the electrolyzer 101 and the electrolyte storage tank 102 form a first hydrogen production cycle. The controller can also be used to obtain the target temperature of the electrolyte at the outlet of the electrolyzer 101 and the current target temperature of the electrolyte at the inlet of the electrolyzer 101, and determine the opening of at least one valve according to the target temperature and the current temperature, so that the electrolyzer 101 and the electrolyte storage tank 102 form a first hydrogen production cycle. Among them, the current temperature can be obtained by setting a temperature sensor at the inlet of the electrolyzer 101 to collect the temperature of the electrolyte.

[0074] An implementation of the electrolytic hydrogen production system may be: Figure 2 As shown, Figure 2 1 is a connection diagram of another electrolytic hydrogen production system according to an exemplary embodiment of the present disclosure, wherein the electrolytic hydrogen production system comprises: a first valve 104 and a second valve 105; the first valve 104 and the second valve 105 are connected in parallel and connected between the first end of the separator 103 and the first end of the electrolyte storage tank 102 and the inlet of the electrolyzer 101; the first valve 104 is used to adjust a first flow rate of the electrolyte flowing from the separator 103 into the electrolyzer 101; the second valve 105 is used to adjust a second flow rate of the electrolyte flowing from the separator 103 into the electrolyzer 101, wherein the second flow rate is greater than the first flow rate; the controller is connected to the first valve 104 and the second valve 105, and is used to determine that the first valve 104 is opened if the target temperature is greater than a first preset temperature threshold; if the target temperature is less than a second preset temperature threshold, determine that the first valve 104 is closed; when the first valve 104 is opened, if the target temperature is greater than the first preset temperature threshold, determine that the first valve 104 is closed and the second valve 105 is opened.

[0075] The first preset temperature threshold is greater than the second preset temperature threshold. The first preset temperature threshold may be the maximum value of the operating temperature of the electrolytic cell 101 , and the second preset temperature threshold may be the minimum value of the operating temperature of the electrolytic cell 101 .

[0076] It should be noted that the controller can also be used to determine that the first valve 104 is open if the current temperature is less than the first inlet temperature threshold; and to determine that the first valve 104 is closed if the current temperature is greater than the second inlet temperature threshold. When the first valve 104 is open, if the current temperature is less than the first inlet temperature threshold, the first valve 104 is closed and the second valve 105 is opened. The second inlet temperature threshold is greater than the first inlet temperature threshold, the first inlet temperature threshold may be the minimum value of the electrolyte temperature flowing into the electrolytic cell 101, and the second inlet temperature threshold may be the maximum value of the electrolyte temperature flowing into the electrolytic cell 101.

[0077] Another implementation of the electrolytic hydrogen production system may be: the electrolytic hydrogen production system includes: a third valve; the third valve is connected between the first end of the separator 103 and the first end of the electrolyte storage tank 102 and the inlet of the electrolytic cell 101; the controller is connected to the third valve, and is used to determine the opening of the third valve according to the target temperature, so as to control the flow rate of the electrolyte input from the separator 103 to the electrolytic cell 101.

[0078] In the above scheme, the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop through the opening of at least one valve. Since the volume of the electrolyte storage tank is smaller than the volume of the separator, the electrolyzer and the electrolyte can be quickly heated to a preset temperature through the first hydrogen production circulation loop, thereby effectively improving the hydrogen production efficiency of the electrolytic hydrogen production system and reducing the cold start time of the electrolytic hydrogen production system.

[0079] Optionally, Figure 2For example, the electrolytic hydrogen production system further includes: a fourth valve 106, a fifth valve 107 and a sixth valve 108; the separator 103 includes: an oxygen side separator 1031 and a hydrogen side separator 1032; the electrolyte storage tank includes: an oxygen side electrolyte storage tank 1021 and a hydrogen side electrolyte storage tank 1022; the first end of the fourth valve 106 is connected to the first end of the oxygen side electrolyte storage tank 1021 and the first end of the hydrogen side electrolyte storage tank 1022, and the second end of the fourth valve 106 is connected to the inlet of the electrolyzer 101, the first end of the oxygen side separator 1031 and the hydrogen side separator The first end of the separator 1032 is connected; the second end of the oxygen side separator 1031 is connected to the second end of the oxygen side electrolyte storage tank 1021 and the oxygen side outlet of the electrolyzer 101, and the second end of the hydrogen side separator 1032 is connected to the second end of the hydrogen side electrolyte storage tank 1022 and the hydrogen side outlet of the electrolyzer 101; the second end of the oxygen side electrolyte storage tank 1021 is also connected to the oxygen side outlet of the electrolyzer 101 through the fifth valve 107, and the second end of the hydrogen side electrolyte storage tank 1022 is also connected to the hydrogen side outlet of the electrolyzer 101 through the sixth valve 108. The controller is also connected to the fourth valve 106, the fifth valve 107 and the sixth valve 108, and is also used to determine that the fourth valve 106, the fifth valve 107 and the sixth valve 108 are all opened when the electrolysis hydrogen production system is started, so that the electrolyzer 101 and the oxygen side electrolyte storage tank 1021 and the hydrogen side electrolyte storage tank 1022 form the first hydrogen production circulation loop.

[0080] It should be noted that the oxygen side separator 1031 can be used to provide electrolyte to the electrolyzer 101 when the electrolytic hydrogen production system is in the first hydrogen production cycle, and to cool the electrolyte input into the electrolyzer 101 from the electrolyte storage tank 102, and to transport the oxygen transported by the oxygen side electrolyte storage tank 1021 through the oxygen outlet; when the electrolytic hydrogen production system is in the second hydrogen production cycle, the gas-liquid mixture flowing out of the electrolyzer 101 is stored, and the oxygen in the gas-liquid mixture is separated. The hydrogen-side separator 1032 can be used to provide electrolyte to the electrolyzer 101 when the electrolytic hydrogen production system is in the first hydrogen production cycle, cool the electrolyte input into the electrolyzer 101 by the electrolyte storage tank 102, and transport the hydrogen transported by the hydrogen-side electrolyte storage tank 1022 through the hydrogen outlet; when the electrolytic hydrogen production system is in the second hydrogen production cycle, store the gas-liquid mixture flowing out of the electrolyzer 101, and separate the hydrogen from the gas-liquid mixture. The oxygen-side electrolyte storage tank 1021 can be used to store the mixture of oxygen and electrolyte flowing out of the electrolyzer 101 when the electrolytic hydrogen production system is in the first hydrogen production cycle, transport the oxygen in the mixture to the oxygen-side separator 1031 through a pipeline, and heat the electrolyte in the oxygen-side separator 1031 by the waste heat of oxygen. The hydrogen side electrolyte storage tank 1022 can be used to store a mixture of hydrogen and electrolyte flowing out of the electrolyzer 101 when the electrolytic hydrogen production system is in the first hydrogen production cycle, and to transport the hydrogen in the mixture to the hydrogen side separator 1032 through a pipeline, and to heat the electrolyte in the separator 103 by the waste heat of the hydrogen.

[0081] In the above scheme, the electrolyzer 101 and the electrolyte storage tank 102 form a first hydrogen production circulation loop through the opening of at least one valve. Since the volume of the electrolyte storage tank 102 is smaller than the volume of the separator 103, the electrolyzer 101 and the electrolyte can be quickly heated to a preset temperature through the first hydrogen production circulation loop, thereby effectively improving the hydrogen production efficiency of the electrolytic hydrogen production system and reducing the cold start time of the electrolytic hydrogen production system.

[0082] Optionally, Figure 2For example, the electrolytic hydrogen production system also includes: a seventh valve 109 and an eighth valve 110; the seventh valve 109 is connected between the second end of the oxygen side separator 1031 and the oxygen side outlet of the electrolyzer 101; the eighth valve 110 is connected between the second end of the hydrogen side separator 1032 and the hydrogen side outlet of the electrolyzer 101; the controller is also connected to the seventh valve 109 and the eighth valve 110, and is also used for when the electrolytic hydrogen production system is in the first hydrogen production cycle and the oxygen side separator 1031 and the hydrogen side separator 1032 input the electrolyte to the electrolyzer 101, if the target temperature is greater than the first preset temperature threshold, determining that the fourth valve 106, the fifth valve 107 and the sixth valve 108 are all closed, and the seventh valve 109 and the eighth valve 110 are opened, so that the electrolyzer 101 and the oxygen side separator 1031 and the hydrogen side separator 1032 form the second hydrogen production cycle.

[0083] In the above scheme, the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop through the opening of at least one valve. Since the volume of the electrolyte storage tank is smaller than the volume of the separator, the electrolyzer and the electrolyte can be quickly heated to a preset temperature through the first hydrogen production circulation loop, thereby effectively improving the hydrogen production efficiency of the electrolytic hydrogen production system and reducing the cold start time of the electrolytic hydrogen production system.

[0084] Optionally, Figure 2 For example, the electrolytic hydrogen production system also includes: a heat exchange device 111, a ninth valve 112 and a tenth valve 113; the first end of the heat exchange device 111 is connected to the seventh valve 109 and the oxygen side outlet of the electrolyzer 101 through the ninth valve 112, the second end of the heat exchange device 111 is connected to the eighth valve 110 and the hydrogen side outlet of the electrolyzer 101 through the tenth valve 113, the third end of the heat exchange device 111 is connected to the second end of the oxygen side separator 1031, and the fourth end of the heat exchange device 111 is connected to the second end of the hydrogen side separator 1032; the controller is also connected to the ninth valve 112 and the tenth valve 113, and is used to determine that the seventh valve 109 and the eighth valve 110 are closed, and the ninth valve 112 and the tenth valve 113 are opened when the electrolytic hydrogen production system is in the second hydrogen production cycle, so as to reduce the temperature through the heat exchange device 111.

[0085] It should be noted that the heat exchange device 111 includes an oxygen side heat exchange device 111 and a hydrogen side heat exchange device 111. The first end of the oxygen side heat exchange device 111 is connected to the seventh valve 109 and the oxygen side outlet of the electrolyzer 101 through the ninth valve 112, the second end of the oxygen side heat exchange device 111 is connected to the second end of the oxygen side separator 1031, and the third end of the oxygen side heat exchange device 111 is used to access cooling water to cool the electrolyte flowing out of the oxygen side outlet of the electrolyzer 101 by exchanging heat. The first end of the hydrogen side heat exchange device 111 is connected to the eighth valve 110 and the hydrogen side outlet of the electrolyzer 101 through the tenth valve 113, and the second end of the hydrogen side heat exchange device 111 is connected to the second end of the hydrogen side separator 1032. The third end of the hydrogen side heat exchange device 111 is used to access cooling water to cool the electrolyte flowing out of the oxygen side outlet of the electrolyzer 101 by exchanging heat.

[0086] In the above scheme, the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop through the opening of at least one valve. Since the volume of the electrolyte storage tank is smaller than the volume of the separator, the electrolyzer and the electrolyte can be quickly heated to a preset temperature through the first hydrogen production circulation loop, thereby effectively improving the hydrogen production efficiency of the electrolytic hydrogen production system and reducing the cold start time of the electrolytic hydrogen production system.

[0087] Figure 3 It is a flow chart of a method for starting hydrogen production by electrolysis according to an exemplary embodiment of the present disclosure, which is applied to a hydrogen production system by electrolysis, wherein the hydrogen production system by electrolysis comprises: an electrolyzer 101, an electrolyte storage tank 102, a separator 103 and at least one valve, wherein the volume of the electrolyte storage tank 102 is smaller than the volume of the separator 103; the first end of the separator 103 is connected to the first end of the electrolyte storage tank 102 and the inlet of the electrolyzer 101, and the second end of the separator 103 is connected to the second end of the electrolyte storage tank 102 and the outlet of the electrolyzer 101; the second end of the electrolyte storage tank 102 is also connected to the outlet of the electrolyzer 101.

[0088] like Figure 3 As shown, the method may include:

[0089] In step 301, the target temperature of the electrolyte at the outlet of the electrolytic cell is obtained.

[0090] The volume of the electrolyte storage tank 102 is much smaller than the volume of the separator 103. For example, the volume of the electrolyte storage tank 102 may be 10% or 5% of the volume of the separator 103. The target temperature may be obtained by collecting the temperature of the electrolyte through a temperature sensor provided at the outlet of the electrolytic cell 101. For example, the temperature value collected by the temperature sensor may be used as the target temperature, or the average value of multiple temperature values ​​collected by the temperature sensor may be calculated and used as the target temperature.

[0091] In step 302, the opening of at least one valve is determined according to the target temperature so that the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop.

[0092] In the above scheme, the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop through the opening of at least one valve. Since the volume of the electrolyte storage tank is smaller than the volume of the separator, the electrolyzer and the electrolyte can be quickly heated to a preset temperature through the first hydrogen production circulation loop, thereby effectively improving the hydrogen production efficiency of the electrolytic hydrogen production system and reducing the cold start time of the electrolytic hydrogen production system.

[0093] Optionally, the electrolysis hydrogen production system includes: a first valve 104 and a second valve 105; the first valve 104 and the second valve 105 are connected in parallel and connected between the first end of the separator 103 and the first end of the electrolyte storage tank 102 and the inlet of the electrolyzer 101; the first valve 104 is used to adjust a first flow rate of the electrolyte flowing from the separator 103 to the electrolyzer 101; the second valve 105 is used to adjust a second flow rate of the electrolyte flowing from the separator 103 to the electrolyzer 101, wherein the second flow rate is greater than the first flow rate;

[0094] above Figure 3 An implementation of step 302 may include:

[0095] If the target temperature is greater than a first preset temperature threshold, it is determined that the first valve is opened; if the target temperature is less than a second preset temperature threshold, it is determined that the first valve is closed; when the first valve is open, if the target temperature is greater than the first preset temperature threshold, it is determined that the first valve is closed and the second valve is opened.

[0096] The first preset temperature threshold is greater than the second preset temperature threshold.

[0097] Optionally, the electrolysis hydrogen production system includes: a third valve; the third valve is connected between the first end of the separator 103 and the first end of the electrolyte storage tank 102 and the inlet of the electrolytic cell 101;

[0098] above Figure 3 Another implementation of step 302 may include:

[0099] In step 306, the opening of the third valve is determined according to the target temperature to control the flow rate of the electrolyte input from the separator to the electrolytic cell.

[0100] Figure 4 is a flow chart of another method for starting hydrogen production by electrolysis according to an exemplary embodiment of the present disclosure, wherein the hydrogen production system by electrolysis further comprises: a fourth valve 106, a fifth valve 107 and a sixth valve 108; the separator 103 comprises: an oxygen side separator 1031 and a hydrogen side separator 1032; the electrolyte storage tank 102 comprises: an oxygen side electrolyte storage tank 1021 and a hydrogen side electrolyte storage tank 1022; a first end of the fourth valve 106 is connected to a first end of the oxygen side electrolyte storage tank 1021 and a first end of the hydrogen side electrolyte storage tank 1022, and a second end of the fourth valve 106 is connected to an inlet of the electrolyzer 101, the oxygen side separator 1031 and the hydrogen side separator 1032; The first end of the separator 1031 is connected to the first end of the hydrogen side separator 1032; the second end of the oxygen side separator 1031 is connected to the second end of the oxygen side electrolyte storage tank 1021 and the oxygen side outlet of the electrolyzer 101, and the second end of the hydrogen side separator 1032 is connected to the second end of the hydrogen side electrolyte storage tank 1022 and the hydrogen side outlet of the electrolyzer 101; the second end of the oxygen side electrolyte storage tank 1021 is also connected to the oxygen side outlet of the electrolyzer 101 through the fifth valve 107, and the second end of the hydrogen side electrolyte storage tank 1022 is also connected to the hydrogen side outlet of the electrolyzer 101 through the sixth valve 108;

[0101] like Figure 4 As shown, the method may also include:

[0102] In step 303, when the electrolytic hydrogen production system is started, it is determined that the fourth valve, the fifth valve and the sixth valve are all opened, so that the electrolyzer, the oxygen-side electrolyte storage tank and the hydrogen-side electrolyte storage tank form a first hydrogen production circulation loop.

[0103] Optionally, the electrolysis hydrogen production system further includes: a seventh valve 109 and an eighth valve 110; the seventh valve 109 is connected between the second end of the oxygen side separator 1031 and the oxygen side outlet of the electrolyzer 101; the eighth valve 110 is connected between the second end of the hydrogen side separator 1032 and the hydrogen side outlet of the electrolyzer 101;

[0104] Still Figure 4 For example, the method may further include:

[0105] In step 304, when the hydrogen production system by electrolysis is in the first hydrogen production cycle and the oxygen side separator and the hydrogen side separator input electrolyte to the electrolyzer, if the target temperature is greater than the first preset temperature threshold, it is determined that the fourth valve, the fifth valve and the sixth valve are all closed, and the seventh valve and the eighth valve are opened, so that the electrolyzer, the oxygen side separator and the hydrogen side separator form a second hydrogen production cycle.

[0106] Optionally, the electrolysis hydrogen production system further includes: a heat exchange device 111, a ninth valve 112 and a tenth valve 113; the first end of the heat exchange device 111 is connected to the seventh valve 109 and the oxygen side outlet of the electrolyzer 101 through the ninth valve 112, the second end of the heat exchange device 111 is connected to the eighth valve 110 and the hydrogen side outlet of the electrolyzer 101 through the tenth valve 113, the third end of the heat exchange device 111 is connected to the second end of the oxygen side separator 1031, and the fourth end of the heat exchange device 111 is connected to the second end of the hydrogen side separator 1032;

[0107] Still Figure 4 For example, the method may further include:

[0108] In step 305, when the hydrogen production system by electrolysis is in the second hydrogen production cycle, if the target temperature is greater than the first preset temperature threshold, the seventh valve and the eighth valve are determined to be closed, and the ninth valve and the tenth valve are determined to be opened.

[0109] Figure 5 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Figure 5 As shown, the electronic device 500 may include: a processor 501 and a memory 502. The electronic device 500 may also include one or more of a multimedia component 503, an input / output (I / O) interface 504, and a communication component 505.

[0110] The processor 501 is used to control the overall operation of the electronic device 500 to complete all or part of the steps in the above-mentioned electrolysis hydrogen production startup method. The memory 502 is used to store various types of data to support the operation of the electronic device 500, and these data may include, for example, instructions for any application or method used to operate on the electronic device 500, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 502 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or optical disk. The multimedia component 503 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 502 or sent through the communication component 505. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 504 provides an interface between the processor 501 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 505 is used for wired or wireless communication between the electronic device 500 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 505 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0111] In an exemplary embodiment, the electronic device 500 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned electrolysis hydrogen production startup method.

[0112] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned electrolysis hydrogen production startup method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 502 including program instructions, and the above-mentioned program instructions can be executed by the processor 501 of the electronic device 500 to complete the above-mentioned electrolysis hydrogen production startup method.

[0113] Figure 6 600 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 600 may be provided as a server. Figure 6 The electronic device 600 includes a processor 622, which may be one or more, and a memory 632 for storing a computer program executable by the processor 622. The computer program stored in the memory 632 may include one or more modules, each corresponding to a set of instructions. In addition, the processor 622 may be configured to execute the computer program to perform the above-mentioned electrolysis hydrogen production startup method.

[0114] In addition, the electronic device 600 may further include a power supply component 626 and a communication component 650, wherein the power supply component 626 may be configured to perform power management of the electronic device 600, and the communication component 650 may be configured to implement communication, for example, wired or wireless communication, of the electronic device 600. In addition, the electronic device 600 may further include an input / output (I / O) interface 658. The electronic device 600 may operate based on an operating system stored in the memory 632.

[0115] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned electrolysis hydrogen production startup method are implemented. For example, the non-transitory computer-readable storage medium can be the above-mentioned memory 632 including program instructions, and the above-mentioned program instructions can be executed by the processor 622 of the electronic device 600 to complete the above-mentioned electrolysis hydrogen production startup method.

[0116] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program that can be executed by a programmable device. The computer program has a code portion for executing the above-mentioned method for starting up hydrogen production by electrolysis when executed by the programmable device.

[0117] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, the technical solution of the present disclosure can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present disclosure. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0118] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A hydrogen production system by electrolysis, characterized in that: The electrolytic hydrogen production system comprises: a controller, an electrolytic cell, an electrolyte storage tank, a separator and at least one valve; The first end of the separator is connected to the first end of the electrolyte storage tank and the inlet of the electrolytic cell, and the second end of the separator is connected to the second end of the electrolyte storage tank and the outlet of the electrolytic cell; The second end of the electrolyte storage tank is also connected to the outlet of the electrolytic cell; The controller is connected to the valve and is used to obtain the target temperature of the electrolyte at the outlet of the electrolyzer; based on the target temperature, the opening of the at least one valve is determined so that the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop.

2. The electrolysis hydrogen production system according to claim 1, characterized in that: The electrolytic hydrogen production system comprises: a first valve and a second valve; The first valve and the second valve are connected in parallel between the first end of the separator and the first end of the electrolyte storage tank and the inlet of the electrolytic cell; The first valve is used to adjust a first flow rate of the electrolyte flowing from the separator into the electrolytic cell; the second valve is used to adjust a second flow rate of the electrolyte flowing from the separator into the electrolytic cell, wherein the second flow rate is greater than the first flow rate; The controller is connected to the first valve and the second valve, and is used to determine that the first valve is open if the target temperature is greater than a first preset temperature threshold; determine that the first valve is closed if the target temperature is less than a second preset temperature threshold; when the first valve is open, if the target temperature is greater than the first preset temperature threshold, determine that the first valve is closed and the second valve is opened, wherein the first preset temperature threshold is greater than the second preset temperature threshold.

3. The electrolysis hydrogen production system according to claim 1, characterized in that: The electrolysis hydrogen production system comprises: a third valve; The third valve is connected between the first end of the separator and the first end of the electrolyte storage tank and the inlet of the electrolytic cell; The controller is connected to the third valve and is used to determine the opening of the third valve according to the target temperature so as to control the flow rate of the electrolyte input from the separator to the electrolytic cell.

4. The electrolysis hydrogen production system according to any one of claims 1 to 3, characterized in that: The electrolytic hydrogen production system further includes: a fourth valve, a fifth valve and a sixth valve; the separator includes: an oxygen side separator and a hydrogen side separator; the electrolyte storage tank includes: an oxygen side electrolyte storage tank and a hydrogen side electrolyte storage tank; The first end of the fourth valve is connected to the first end of the oxygen-side electrolyte storage tank and the first end of the hydrogen-side electrolyte storage tank, and the second end of the fourth valve is connected to the inlet of the electrolyzer, the first end of the oxygen-side separator and the first end of the hydrogen-side separator; The second end of the oxygen-side separator is connected to the second end of the oxygen-side electrolyte storage tank and the oxygen-side outlet of the electrolyzer, and the second end of the hydrogen-side separator is connected to the second end of the hydrogen-side electrolyte storage tank and the hydrogen-side outlet of the electrolyzer; The second end of the oxygen side electrolyte storage tank is also connected to the oxygen side outlet of the electrolyzer through the fifth valve, and the second end of the hydrogen side electrolyte storage tank is also connected to the hydrogen side outlet of the electrolyzer through the sixth valve.

5. The electrolysis hydrogen production system according to claim 4, characterized in that: The controller is also connected to the fourth valve, the fifth valve and the sixth valve, and is also used to determine that the fourth valve, the fifth valve and the sixth valve are all opened when the electrolysis hydrogen production system is started, so that the electrolyzer, the oxygen side electrolyte storage tank and the hydrogen side electrolyte storage tank form the first hydrogen production circulation loop.

6. The electrolysis hydrogen production system according to claim 5, characterized in that: The electrolysis hydrogen production system further includes: a seventh valve and an eighth valve; The seventh valve is connected between the second end of the oxygen-side separator and the oxygen-side outlet of the electrolyzer; The eighth valve is connected between the second end of the hydrogen side separator and the hydrogen side outlet of the electrolyzer; The controller is also connected to the seventh valve and the eighth valve, and is also used to determine that the fourth valve, the fifth valve and the sixth valve are all closed, and the seventh valve and the eighth valve are opened when the electrolytic hydrogen production system is in the first hydrogen production cycle and the oxygen side separator and the hydrogen side separator input the electrolyte to the electrolyzer, if the target temperature is greater than a first preset temperature threshold, so that the electrolyzer, the oxygen side separator and the hydrogen side separator form a second hydrogen production cycle.

7. The electrolysis hydrogen production system according to claim 6, characterized in that: The electrolytic hydrogen production system further includes: a heat exchange device, a ninth valve and a tenth valve; The first end of the heat exchange device is connected to the seventh valve and the oxygen side outlet of the electrolyzer through the ninth valve, the second end of the heat exchange device is connected to the eighth valve and the hydrogen side outlet of the electrolyzer through the tenth valve, the third end of the heat exchange device is connected to the second end of the oxygen side separator, and the fourth end of the heat exchange device is connected to the second end of the hydrogen side separator; The controller is also connected to the ninth valve and the tenth valve, and is used to determine that the seventh valve and the eighth valve are closed, and the ninth valve and the tenth valve are opened when the target temperature is greater than the first preset temperature threshold when the electrolysis hydrogen production system is in the second hydrogen production cycle, so as to reduce the temperature through the heat exchange device.

8. A method for starting up hydrogen production by electrolysis, characterized in that: Applicable to an electrolytic hydrogen production system, the electrolytic hydrogen production system comprises: an electrolyzer, an electrolyte storage tank, a separator and at least one valve, wherein the volume of the electrolyte storage tank is smaller than the volume of the separator; the first end of the separator is connected to the first end of the electrolyte storage tank and the inlet of the electrolyzer, the second end of the separator is connected to the second end of the electrolyte storage tank and the outlet of the electrolyzer; the second end of the electrolyte storage tank is also connected to the outlet of the electrolyzer; The method comprises: Obtaining a target temperature of the electrolyte at the outlet of the electrolytic cell; The opening degree of the at least one valve is determined according to the target temperature so that the electrolyzer and the electrolyte storage tank form a first hydrogen production circulation loop.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to claim 8 are implemented.

10. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to claim 8.

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