Electrolytic cell parameter identification system and implementation method

Abstract

The invention discloses an electrolytic cell parameter identification system and an implementation method. Comprising a data storage and calculation device, an electrolytic cell power supply, an electrolytic cell voltage sampling device, an electrolytic cell current sampling device, an electrolytic cell output hydrogen / oxygen flow and pressure sampling device, an electrolytic cell inlet / outlet water flow and pressure sampling device, an electrolytic cell pure water supplement sampling device and an electrolytic cell temperature sampling device, an electrolytic bath water temperature control device and an electrolytic bath; by accurately obtaining the mathematical model of the electrolytic cell, the stability margin of the electrolytic cell control system is increased, the response speed of the electrolytic cell control system is increased, the control precision of the electrolytic cell is improved, the working efficiency of the electrolytic cell is improved, and the current utilization rate of the electrolytic cell is improved.

Description

Technical Field

[0001] This invention relates to a water electrolysis hydrogen production technology, and more particularly to an electrolyzer parameter identification system and implementation method. Background Technology

[0002] In recent years, with the introduction of concepts like "carbon peaking" and "carbon neutrality," the production of hydrogen through water electrolysis has developed rapidly, leading to a surge in electrolyzer manufacturers and the emergence of electrolyzers of various specifications and models. This has made precise control of the electrolyzers more challenging, making accurate mathematical models for electrolyzers particularly important.

[0003] With the emergence of numerous electrolytic cell modeling methods, electrolytic cell models have become increasingly accurate. However, the corresponding electrolytic cell model parameters differ for different electrolytic cells. Only by accurately obtaining the electrolytic cell parameters can the model be made more accurate, and the control of the electrolytic cell more precise. Current technology does not yet meet this requirement.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an electrolytic cell parameter identification system and implementation method to solve the above-mentioned technical problems existing in the prior art.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] The electrolytic cell parameter identification system of the present invention includes an electrolytic cell, wherein the electrolytic cell is equipped with a data storage and calculation device, an electrolytic cell power supply, an electrolytic cell voltage sampling device, an electrolytic cell current sampling device, an electrolytic cell output hydrogen / oxygen flow and pressure sampling device, and an electrolytic cell temperature sampling device.

[0008] The implementation method of the above-mentioned electrolytic cell parameter identification system, which is used in the above-mentioned parameter identification system, includes the following steps:

[0009] First, adjust the temperature of the water entering the electrolytic cell and keep it constant;

[0010] Then, the current in the electrolytic cell was increased and decreased by different inclinations, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test.

[0011] Then, the voltage of the electrolytic cell was increased and decreased by different inclinations, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test.

[0012] Then, the power of the electrolytic cell was increased and decreased by different inclines, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test.

[0013] After the above tests are completed, the electrolytic cell temperature is adjusted, and the above steps are repeated, with the electrolytic cell temperature tested at equal intervals from the lowest temperature to the highest temperature.

[0014] Finally, the electrolytic cell parameter identification system automatically calculates the electrolytic cell parameters based on the test data and the type and model of the electrolytic cell, and provides an accurate model.

[0015] Compared with the prior art, the electrolytic cell parameter identification system and implementation method provided by the present invention increases the stability margin of the electrolytic cell control system, improves the response speed of the electrolytic cell control system, improves the control accuracy of the electrolytic cell, improves the working efficiency of the electrolytic cell, and improves the current utilization rate of the electrolytic cell by accurately acquiring the mathematical model of the electrolytic cell. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the electrolytic cell parameter identification system provided in an embodiment of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them, and do not constitute a limitation on the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0018] First, the following explanations are provided for the terms that may be used in this article:

[0019] The term "and / or" means that either or both can be achieved simultaneously. For example, X and / or Y means that it includes both "X" or "Y" as well as the three cases of "X and Y".

[0020] The terms "comprising," "including," "containing," "having," or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example, including a technical feature element (such as raw material, component, ingredient, carrier, dosage form, material, size, part, component, mechanism, device, step, process, method, reaction conditions, processing conditions, parameter, algorithm, signal, data, product or article of manufacture, etc.) should be interpreted as including not only the expressly listed technical feature element, but also other technical feature elements that are not expressly listed and are well-known in the art.

[0021] The term "composed of" excludes any technical features not expressly listed. When used in a claim, it closes the claim to exclude all technical features other than those expressly listed, except for associated conventional impurities. If the term appears only in a clause of a claim, it limits the claim to the elements expressly listed in that clause; elements recited in other clauses are not excluded from the overall claim.

[0022] The contents not described in detail in the embodiments of this invention are prior art known to those skilled in the art. Where specific conditions are not specified in the embodiments of this invention, they shall be performed according to conventional conditions in the art or conditions recommended by the manufacturer. Where the manufacturers of the reagents or instruments used in the embodiments of this invention are not specified, they are all conventional products that can be purchased commercially.

[0023] The electrolytic cell parameter identification system of the present invention includes an electrolytic cell, wherein the electrolytic cell is equipped with a data storage and calculation device, an electrolytic cell power supply, an electrolytic cell voltage sampling device, an electrolytic cell current sampling device, an electrolytic cell output hydrogen / oxygen flow and pressure sampling device, and an electrolytic cell temperature sampling device.

[0024] The electrolytic cell is also provided with one or more of the following devices:

[0025] Electrolyzer water temperature control device, electrolyzer pure water replenishment sampling device, electrolyzer inlet / outlet water flow and pressure sampling device.

[0026] The system can be a standalone system or a system combined with the power supply of the electrolytic cell.

[0027] A method for implementing an electrolytic cell parameter identification system, the method being used to control the aforementioned parameter identification system, the method comprising the following steps:

[0028] First, adjust the temperature of the water entering the electrolytic cell and keep it constant;

[0029] Then, the current in the electrolytic cell was increased and decreased by different inclinations, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test.

[0030] Then, the voltage of the electrolytic cell was increased and decreased by different inclinations, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test.

[0031] Then, the power of the electrolytic cell was increased and decreased by different inclines, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test.

[0032] After the above tests are completed, the electrolytic cell temperature is adjusted, and the above steps are repeated, with the electrolytic cell temperature tested at equal intervals from the lowest temperature to the highest temperature.

[0033] Finally, the electrolytic cell parameter identification system automatically calculates the electrolytic cell parameters based on the test data and the type and model of the electrolytic cell, and provides an accurate model.

[0034] In summary, the electrolytic cell parameter identification system and implementation method of this invention increase the stability margin of the electrolytic cell control system, improve the response speed of the electrolytic cell control system, improve the control accuracy of the electrolytic cell, improve the working efficiency of the electrolytic cell, and improve the current utilization rate of the electrolytic cell by accurately acquiring the mathematical model of the electrolytic cell.

[0035] To more clearly demonstrate the technical solution and its effects provided by the present invention, the embodiments of the present invention will be described in detail below with reference to specific examples.

[0036] Example 1

[0037] like Figure 1 As shown:

[0038] The present invention aims to solve the problem of obtaining electrolytic cell model parameters, thereby obtaining an accurate model of the electrolytic cell, so as to make the control of the electrolytic cell more precise, more efficient, and with higher current utilization.

[0039] To achieve the above objectives, the present invention provides the following solution:

[0040] On the one hand, to achieve the above objectives, the present invention provides an electrolytic cell parameter identification system, the system comprising: a data storage and computing device, an electrolytic cell power supply, an electrolytic cell voltage sampling device, an electrolytic cell current sampling device, an electrolytic cell output hydrogen / oxygen flow and pressure sampling device, an electrolytic cell inlet / outlet water flow and pressure sampling device, an electrolytic cell pure water replenishment sampling device, an electrolytic cell temperature sampling device, an electrolytic cell water temperature control device, and an electrolytic cell;

[0041] The data storage and computing device is used to store all sampled data during the testing process and calculate the electrolytic cell parameters;

[0042] The electrolytic cell control power supply is used to provide voltage and current to the electrolytic cell to ensure its normal operation.

[0043] The electrolytic cell voltage sampling device is used to collect voltage values ​​of the electrolytic cell under different operating conditions and at different times, and is used for parameter calculation of the electrolytic cell voltage and current model;

[0044] The electrolytic cell current sampling device is used to collect the current values ​​of the electrolytic cell under different operating conditions and at different times, for the calculation of the electrolytic cell voltage and current model;

[0045] The electrolyzer output hydrogen / oxygen flow and pressure sampling device is used to collect the hydrogen or oxygen production of the electrolyzer under different currents, which is used to calculate the electrolyzer current and hydrogen (or oxygen) production model parameters, and then obtain the electrolyzer current utilization rate.

[0046] The electrolytic cell inlet / outlet water flow and pressure sampling device is used to collect the inlet and outlet water flow of the electrolytic cell; and to obtain internal pressure data and water consumption data of the electrolytic cell.

[0047] The pure water replenishment sampling device for the electrolyzer is used to collect pure water replenishment data for the electrolyzer, and to determine the current utilization rate of the electrolyzed water.

[0048] The electrolytic cell temperature sampling device is used to collect electrolytic cell temperature data;

[0049] The electrolytic cell water temperature control device is used to control the temperature of the electrolytic cell inlet, ensuring that the temperature of the electrolytic cell remains constant during the test and improving the test accuracy. This device is an equipment for optimizing test accuracy and is not a necessary device.

[0050] On the other hand, to achieve the above objectives, the present invention also provides a method for implementing an electrolytic cell parameter identification system, the method being used to control the electrolytic cell parameter identification system described in any of the above claims, comprising the following steps:

[0051] First, adjust and maintain the inlet water temperature of the electrolytic cell. Then, control the current of the electrolytic cell to increase and decrease at different inclines, and the electrolytic cell parameter identification system automatically records the data from all sampling channels during the test. Next, control the voltage of the electrolytic cell to increase and decrease at different inclines, and the electrolytic cell parameter identification system automatically records the data from all sampling channels during the test. Then, control the power of the electrolytic cell to increase and decrease at different inclines, and the electrolytic cell parameter identification system automatically records the data from all sampling channels during the test. After the above tests are completed, modify the inlet water temperature of the electrolytic cell and repeat the above steps. The inlet water temperature of the electrolytic cell is tested from the lowest temperature to the highest temperature at fixed intervals. Finally, the electrolytic cell parameter identification system automatically calculates the electrolytic cell parameters based on the test data and the type and model of the electrolytic cell, and provides an accurate model.

[0052] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0053] This invention can obtain an accurate mathematical model of the electrolytic cell, increase the stability margin of the electrolytic cell control system, improve the response speed of the electrolytic cell control system, improve the control accuracy of the electrolytic cell, improve the working efficiency of the electrolytic cell, and improve the current utilization rate of the electrolytic cell.

[0054] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims. The information disclosed in the background section is intended only to enhance the understanding of the overall background technology of the present invention and should not be construed as an admission or implication in any way that such information constitutes prior art known to those skilled in the art.

Claims

1. An electrolytic cell parameter identification system, characterized in that, It includes an electrolytic cell, which is equipped with a data storage and computing device, an electrolytic cell power supply, an electrolytic cell voltage sampling device, an electrolytic cell current sampling device, an electrolytic cell output hydrogen / oxygen flow and pressure sampling device, and an electrolytic cell temperature sampling device.

2. The electrolytic cell parameter identification system according to claim 1, characterized in that, The electrolytic cell is also provided with one or more of the following devices: Electrolyzer water temperature control device, electrolyzer pure water replenishment sampling device, electrolyzer inlet / outlet water flow and pressure sampling device.

3. The electrolytic cell parameter identification system according to claim 2, characterized in that, The system can be a standalone system or a system combined with the power supply of the electrolytic cell.

4. A method for implementing an electrolytic cell parameter identification system, the method being used to control the parameter identification system according to any one of claims 1-3, characterized in that, The method includes the following steps: First, adjust the temperature of the water entering the electrolytic cell and keep it constant; Then, the current in the electrolytic cell was increased and decreased by different inclinations, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test. Then, the voltage of the electrolytic cell was increased and decreased by different inclinations, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test. Then, the power of the electrolytic cell was increased and decreased by different inclines, and the electrolytic cell parameter identification system automatically recorded the data of all sampling channels during the test. After the above tests are completed, the electrolytic cell temperature is adjusted, and the above steps are repeated, with the electrolytic cell temperature tested at equal intervals from the lowest temperature to the highest temperature. Finally, the electrolytic cell parameter identification system automatically calculates the electrolytic cell parameters based on the test data and the type and model of the electrolytic cell, and provides an accurate model.

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