Hydrogen production power supply device

Abstract

The utility model discloses a hydrogen production power supply device, which comprises a voltage conversion module, an alternating current filtering module, a rectification module, a DC-DC conversion module, a DC-DC filtering module, an electrolysis unit, a control module, a current transformer and an environment control module, the input end of the voltage conversion module is electrically connected with an alternating current power grid, and the output end of the voltage conversion module is electrically connected with the alternating current filtering module; the output end of the AC filtering module is electrically connected with the rectification module, the output end of the rectification module is electrically connected with the DC-DC conversion module, the output end of the DC-DC conversion module is electrically connected with the DC-DC filtering module, the output end of the DC-DC filtering module is electrically connected with the electrolysis unit, and the control module is electrically connected with the rectification module, the DC-DC conversion module and the environment control module. The primary side of the current transformer is connected in series between the AC power grid and the voltage conversion module, and the secondary side is electrically connected with the input end of the rectification module. The hydrogen production power supply device provided by the utility model has the advantages of high efficiency, stability and adjustability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen production power supply, in particular to a hydrogen production power supply device. BACKGROUND

[0002] Hydrogen energy, as a clean energy, has the advantages of high heat value and no pollution, and has gradually become one of the important directions of global energy transformation. Compared with traditional fossil energy, hydrogen energy does not produce harmful emissions when burned, only water vapor and heat, so it is considered an ideal green energy. The application field of hydrogen is very wide, including industry, transportation, energy storage and many other industries. In industry, hydrogen is widely used in metallurgy, chemical industry, petroleum refining and other processes. In the transportation field, the rise of hydrogen fuel cell vehicles provides a feasible solution to the emission problem of traditional cars. In terms of energy storage, hydrogen energy converts excess electricity into chemical energy through water electrolysis hydrogen production technology, helping to solve the problem of large renewable energy volatility and energy storage.

[0003] Water electrolysis hydrogen production, as one of the current mainstream hydrogen production technologies, has important technical and market prospects. This technology uses electric current to decompose water into hydrogen and oxygen, which is clean and efficient, and can be used on a large scale for renewable energy power storage. Hydrogen production power supply, as the core device of water electrolysis hydrogen production, its performance and stability directly affect the yield and quality of hydrogen. With the continuous progress of water electrolysis hydrogen production technology, especially the reduction of renewable energy costs and technological innovation, the application scenarios of hydrogen energy will be more extensive, becoming an important part of the future energy system, contributing to global carbon emission reduction and achieving sustainable development goals.

[0004] At present, the existing hydrogen production power supply has the following problems:

[0005] 1. Low power supply efficiency and high energy consumption;

[0006] 2. Limited output voltage and current regulation range, difficult to adapt to different working conditions;

[0007] 3. Poor device stability, easily affected by power grid fluctuations;

[0008] 4. Lack of intelligent control, unable to monitor and optimize the hydrogen production process in real time. CONTENT OF THE INVENTION

[0009] Therefore, the present application provides a hydrogen production power supply device to solve the problems of low efficiency, poor stability, limited output voltage and current regulation range, and inability to monitor and optimize the hydrogen production process in real time in the prior art.

[0010] In order to achieve the above purpose, the present application provides the following technical solutions:

[0011] The application discloses a hydrogen production power supply device, which comprises a voltage conversion module, an alternating current filtering module, a rectification module, a DC-DC conversion module, a DC-DC filtering module, an electrolysis unit, a control module, a current transformer and an environment control module, wherein the input end of the voltage conversion module is electrically connected with an alternating current power grid, the output end of the voltage conversion module is electrically connected with the input end of the alternating current filtering module, the output end of the alternating current filtering module is electrically connected with the input end of the rectification module, the output end of the rectification module is electrically connected with the input end of the DC-DC conversion module, the output end of the DC-DC conversion module is electrically connected with the input end of the DC-DC filtering module, the output end of the DC-DC filtering module is electrically connected with the electrolysis unit, the output end of the control module is electrically connected with the input end of the rectification module and the input end of the DC-DC conversion module, the primary side of the current transformer is connected in series between the alternating current power grid and the voltage conversion module, the secondary side of the current transformer is electrically connected with the input end of the rectification module, and the input end of the environment control module is electrically connected with the input end of the control module.

[0012] As preferred, a power switch module is further included, one end of the power switch module is electrically connected with the voltage conversion module, and the other end of the power switch module is electrically connected with the alternating current filtering module.

[0013] As preferred, the power switch module adopts an AC circuit breaker.

[0014] As preferred, the voltage conversion module adopts an isolation transformer.

[0015] As preferred, the alternating current filtering module adopts a three-order filtering structure of inductance and capacitance.

[0016] As preferred, the rectification module adopts a three-phase full-bridge rectification circuit.

[0017] As preferred, the control module adopts a microprocessor or a DSP chip.

[0018] As preferred, the DC-DC conversion module adopts a high-frequency switching power supply technology.

[0019] As preferred, the environment control module adopts a cooler.

[0020] As preferred, a communication module is further included, and the communication module is electrically connected with the control module.

[0021] Compared with the prior art, the application has at least the following beneficial effects:

[0022] 1. The application provides a kind of hydrogen production power supply device, including voltage conversion module, AC filter module, rectifier module, DC-DC conversion module, DC-DC filter module, electrolytic unit, control module, current transformer and environmental control module composition hardware architecture, wherein, DC-DC filter module and intelligent control module can ensure the stability of output current and voltage, intelligent control module can be wider to adjust the range of output voltage and current, to adapt to different working condition requirements, intelligent control module also supports remote monitoring and automatic adjustment, so as to improve the hydrogen production efficiency.

[0023] 2, using three-phase full-bridge rectifier and high-frequency switching power supply technology, power efficiency can reach more than 95%. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more intuitively illustrate the prior art and the present application, the following exemplary drawings are given. It should be understood that the specific shape, structure shown in the drawings should not be regarded as a limitation condition in the implementation of the present application; for example, based on the technical concept disclosed in the present application and the exemplary drawings, those skilled in the art can easily make routine adjustments or further optimization to some units (components) such as increase / decrease / attribute division, specific shape, positional relationship, connection mode, size ratio relationship, etc.

[0025] Figure 1 A hydrogen production power supply device circuit principle block diagram is provided for the present application;

[0026] Figure 2 A hydrogen production power supply device circuit principle diagram is provided for the present application;

[0027] Figure 3 A rectifier module circuit principle diagram is provided for the present application;

[0028] Figure 4 A DC-DC conversion module circuit principle diagram is provided for the present application;

[0029] Figure 5 A container overhead view for installing a kind of hydrogen production power supply device is provided for the present application;

[0030] Figure 6 A container front view for installing a kind of hydrogen production power supply device is provided for the present application;

[0031] Figure 7 A container right view for installing a kind of hydrogen production power supply device is provided for the present application;

[0032] Figure 8 A container left view for installing a kind of hydrogen production power supply device is provided for the present application.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1, AC grid; 2, current transformer; 3, voltage conversion module; 4, AC filter module; 5, rectifier module; 6, DC-DC conversion module; 7, DC-DC filter module; 8, electrolysis unit; 9, control module; 10, environmental control module. DETAILED DESCRIPTION

[0035] The application will be further described in detail below with reference to specific embodiments in conjunction with the accompanying drawings.

[0036] In the description of the present application: unless otherwise specified, the meaning of "a plurality of" is two or more. The terms "first", "second", "third" and the like in the present application are intended to distinguish the objects referred to, and do not have a special meaning in the technical connotation aspect (for example, should not be understood as emphasizing importance or order, etc.). The expressions "include", "contain", "have" and the like also mean "not limited to" (certain units, components, materials, steps, etc.).

[0037] The terms such as "upper", "lower", "left", "right", "intermediate" and the like referred to in the present application are generally indications of the relative positional relationship for the purpose of intuitive understanding with reference to the drawings, and are not absolute limitations on the positional relationship in the actual product.

[0038] Please refer to Figure 1 and Figure 2 , the present application provides a hydrogen production power supply device, comprising voltage conversion module 3, AC filter module 4, rectifier module 5, DC-DC conversion module 6, DC-DC filter module 7, electrolysis unit 8, control module 9, current transformer 2 and environmental control module 9, the input end of voltage conversion module 3 is electrically connected with AC grid 1, the output end of voltage conversion module 3 is electrically connected with the input end of AC filter module 4, the output end of AC filter module 4 is electrically connected with the input end of rectifier module 5, the output end of rectifier module 5 is electrically connected with the input end of DC-DC conversion module 6, the output end of DC-DC conversion module 6 is electrically connected with the input end of DC-DC filter module 7, the output end of DC-DC filter module 7 is electrically connected with electrolysis unit 8, the output end of control module 9 is electrically connected with the input end of rectifier module 5 and DC-DC conversion module 6, the primary side of current transformer 2 is connected in series between AC grid 1 and voltage conversion module 3, the secondary side of current transformer 2 is electrically connected with the input end of rectifier module 5, the input end of environmental control module 9 is electrically connected with the input end of control module 9, wherein the control module 9 is used for real-time monitoring of the output voltage, current and power of the hydrogen production power supply device, and automatically adjusting the output parameters according to the hydrogen production demand.

[0039] Specifically, the hydrogen production power supply device provided by the application further comprises a power switch module, one end of the power switch module is electrically connected with the voltage conversion module 3, and the other end of the power switch module is electrically connected with the alternating current filtering module 4. The power switch module adopts an AC circuit breaker, which can disconnect the connection between the hydrogen production power supply device and the alternating current power grid 1, thereby facilitating operation and maintenance.

[0040] Specifically, in the hydrogen production power supply device provided by the application, the voltage conversion module 3 adopts an isolation transformer. The isolation transformer converts various specifications of alternating current power into alternating current power suitable for matching the hydrogen production power supply and realizes electrical isolation, so as to reduce interference between circuits and improve the stability of the system.

[0041] Specifically, in the hydrogen production power supply device provided by the application, the alternating current filtering module 4 adopts a three-order filtering structure of inductance and capacitance, which takes into account high-frequency attenuation and low-frequency gain, and is used for reducing switching frequency harmonics and improving grid-connected power quality.

[0042] Specifically, in the hydrogen production power supply device provided by the application, the rectifier module 5 is used for converting alternating current into direct current, and adopts a three-phase full-bridge rectifier circuit, which has the characteristics of high efficiency and low harmonics. The schematic diagram of the rectifier module 5 is as shown in Figure 3 In the application, the input voltage of the rectifier module 5 is 690V alternating current, the output voltage is 975V-1200V direct current, and the rectification efficiency can reach more than 98%.

[0043] Specifically, in the hydrogen production power supply device provided by the application, the control module 9 adopts a microprocessor or a DSP chip, which is used for monitoring the output voltage, current and power of the hydrogen production power supply device in real time and automatically adjusting the output parameters according to the hydrogen production demand. It should be noted that the control module 9 is used for monitoring the output voltage, current and power of the hydrogen production power supply device in real time and automatically adjusting the output parameters according to the hydrogen production demand, which belongs to the prior art, and the application does not involve the improvement of the computer program.

[0044] Specifically, in the hydrogen production power supply device provided by the application, the DC-DC conversion module 6 adopts high-frequency switching power supply technology to convert direct current into adjustable direct current. The switching frequency is 100kHz, the output voltage range is 50-600V, the output current range of a single DC-DC conversion module 6 is 0-800A, and the conversion efficiency can reach more than 95%. The schematic diagram of the DC-DC conversion module 6 is as shown in Figure 4 .

[0045] Specifically, in the hydrogen production power supply device provided by the application, the DC-DC filtering module adopts an LC filtering circuit, which is used for filtering the voltage-regulated direct current, thereby reducing the ripple and ensuring the stability of the output current. The filtering capacitance is 1000μF, the filtering inductance is 10mH, and the ripple coefficient is less than 1%.

[0046] Specifically, the hydrogen production power supply device provided in the application adopts a cooler, a compressor or a heat exchanger, and the cooling capacity is greater than 100 KW. The cold water generated by the environmental control module 10 is replaced by the heat generated by the operation of the equipment after passing through the power device pipeline of each power module. The heated hot water flows back to the environmental control module for cooling, thereby ensuring the stable operation of the power supply equipment.

[0047] Specifically, the hydrogen production power supply device provided in the application further comprises a communication module, which is electrically connected with the control module 9. The communication module supports RS485, CAN or Ethernet communication, and the communication rate reaches 9600bps, so that remote monitoring and data transmission can be realized.

[0048] Working principle:

[0049] In the application, the voltage conversion module 3 converts various specifications of alternating current power into alternating current suitable for matching the hydrogen production power supply. The alternating current filtering module 4 is used for filtering alternating current. The rectifier module 5 converts the input alternating current into direct current. The DC-DC conversion module 6 converts the direct current into adjustable direct current. The DC-DC filtering module 7 filters the direct current. The control module 9 monitors and adjusts the output parameters in real time. The communication module realizes remote monitoring and data transmission. The environmental control module 10 controls the temperature of each module in real time.

[0050] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 . In the application, each module in the hydrogen production power supply device is fixedly installed in a container, which can be used for actual production. The copper bar lifting cabinet serves as a kind of wire for connecting each module in the circuit. The upper part of the container is provided with an air outlet window, as shown in Figure 6 , and the lower part of one side is provided with an air inlet window, as shown in Figure 7 , so as to facilitate air exchange. The side of the container is also provided with a fan for assisting air exchange, as shown in Figure 8 .

[0051] In the application, the voltage conversion module 3 can convert external alternating current into 690V alternating current matched with the rectifier module. A centrifugal fan is installed above the voltage conversion module 3. The centrifugal fan is installed on a mounting plate, which divides the voltage conversion module into an upper chamber and a lower chamber. The lower chamber is provided with an air inlet window, and the upper chamber is provided with an air outlet window. When the centrifugal fan works, it can suck cold air with lower temperature from the air inlet window below, and the hot air flows out of the air outlet window of the upper chamber after passing through the voltage conversion module, thereby taking away the heat of the voltage conversion module.

[0052] The hydrogen production power supply device provided in the application has the following advantages:

[0053] Efficient: Adopting three-phase full-bridge rectification and high-frequency switching power supply technology, the power supply efficiency can reach more than 95%.

[0054] Stable: The filtering module and intelligent control module ensure the stability of output current and voltage.

[0055] Adjustable: Wide range of output voltage and current, suitable for different working conditions.

[0056] Intelligent: Supports remote monitoring and automatic adjustment, improving hydrogen production efficiency.

[0057] Energy-saving and environmentally friendly: Low energy consumption, low harmonic, meets green energy requirements.

[0058] The hydrogen production power supply device provided by the present application is not only efficient, stable and adjustable, but also has important significance for hydrogen production power supply.

[0059] The technical features of the above embodiments can be combined in any way (as long as the combination of these technical features does not exist contradictions), in order to make the description simple, not all possible combinations of each technical feature in the above embodiments are described; these embodiments which are not explicitly written should also be considered as the scope of the present application.

Claims

1. A hydrogen production power supply device characterized by comprising: The application relates to a power supply system for electrolytic unit, which comprises a voltage transformation module, an AC filter module, a rectifier module, a DC-DC transformation module, a DC-DC filter module, an electrolytic unit, a control module, a current transformer and an environment control module, wherein the input end of the voltage transformation module is electrically connected with an AC power grid, the output end of the voltage transformation module is electrically connected with the input end of the AC filter module, the output end of the AC filter module is electrically connected with the input end of the rectifier module, the output end of the rectifier module is electrically connected with the input end of the DC-DC transformation module, the output end of the DC-DC transformation module is electrically connected with the input end of the DC-DC filter module, the output end of the DC-DC filter module is electrically connected with the electrolytic unit, the output end of the control module is electrically connected with the input end of the rectifier module and the input end of the DC-DC transformation module, the primary side of the current transformer is connected in series between the AC power grid and the voltage transformation module, the secondary side of the current transformer is electrically connected with the input end of the rectifier module, and the input end of the environment control module is electrically connected with the input end of the control module.

2. The hydrogen generating power supply device according to claim 1, characterized by The power supply system further comprises a power switch module, one end of the power switch module is electrically connected with the voltage transformation module, and the other end of the power switch module is electrically connected with the AC filter module.

3. The hydrogen generating power supply device according to claim 2, characterized by The power switch module is an AC circuit breaker.

4. The hydrogen generating power supply device according to claim 1, wherein The voltage transformation module is an isolation transformer.

5. The hydrogen generating power supply device according to claim 1, wherein The AC filter module adopts a three-order filter structure of inductance and capacitance.

6. The hydrogen generating power supply device according to claim 1, wherein The rectifier module adopts a three-phase full-bridge rectifier circuit.

7. The hydrogen generating power supply device according to claim 1, wherein The control module adopts a microprocessor or a DSP chip.

8. The hydrogen generating power supply device according to claim 1, wherein The DC-DC transformation module adopts high-frequency switching power supply technology.

9. The hydrogen generating power supply device according to claim 1, wherein The environment control module adopts a cooler.

10. The hydrogen-producing power device of claim 1, wherein, The power supply system further comprises a communication module, and the communication module is electrically connected with the control module.

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