Small hydrogen production and charging integrated device

Abstract

The utility model discloses a small hydrogen production and charging integrated device, and belongs to the field of new energy application. Comprising a cabinet body, a hydrogen production module, a hydrogen charging module and at least two hydrogen charging connectors. The hydrogen production module comprises an electrolytic bath arranged in the cabinet body; the hydrogen charging module is arranged in the cabinet body and is connected with the hydrogen production module; the hydrogen charging connectors are connected with the tail ends of the hydrogen charging modules, and the hydrogen charging connectors correspond to the hydrogen storage devices one to one; and during hydrogen filling, the hydrogen filling module is communicated with at least one hydrogen storage device. According to the utility model, at least two hydrogen charging connectors are arranged, so that hydrogen can be charged to a plurality of hydrogen storage devices at the same time or accordingly, the time for replacing the hydrogen storage devices can be saved, and the electrolytic cell does not need to be shut down, thereby improving the hydrogen production efficiency and prolonging the service life of the electrolytic cell.

Description

Technical Field

[0001] The utility model belongs to the field of hydrogen fuel cells, in particular to a small-sized integrated hydrogen production and charging device. Background Art

[0002] A hydrogen generator and filler is a device specially designed for producing and filling hydrogen, and is usually used in industries, scientific research, energy storage, fuel cell power generation and other fields. This type of equipment usually includes a hydrogen production module (such as hydrogen production by water electrolysis, hydrogen production by methane reforming, etc.) and a hydrogen filling module (including pressure regulation, flow control, safety monitoring and other systems), which is designed to safely and efficiently generate and store hydrogen to meet the needs of specific application scenarios. Hydrogen generators and fillers mainly include two methods of hydrogen production: water electrolysis and methane reforming. Among them, water electrolysis is the most common method of hydrogen production, which uses electricity to decompose water into hydrogen and oxygen. After a certain number of start-up and stop operations, the performance of conventional electrolyzers may decline significantly, or even fail to continue to work normally, and parts such as the membrane electrode assembly need to be replaced.

[0003] However, the existing hydrogen production and filling machine can only accommodate one hydrogen storage device. When the hydrogen storage device is full of hydrogen, the electrolyzer will shut down and be restarted after the hydrogen storage device is replaced. This not only requires manual replacement of the hydrogen storage device, which wastes a lot of hydrogen production time and affects the efficiency of the entire hydrogen production and filling device, but also this unnecessary start and stop of the electrolyzer will shorten the effective service life of the electrolyzer. Utility Model Content

[0004] In order to overcome the above technical defects, the utility model provides a small-scale integrated hydrogen production and hydrogen filling device to solve the problems involved in the background technology.

[0005] The utility model provides a small-scale integrated hydrogen production and charging device, comprising:

[0006] Cabinet;

[0007] A hydrogen production module, comprising an electrolyzer disposed inside the cabinet;

[0008] A hydrogen charging module, built in the cabinet and connected to the hydrogen production module;

[0009] At least two hydrogen charging connectors are connected to the ends of the hydrogen charging module, and the hydrogen charging connectors correspond to the hydrogen storage devices one by one;

[0010] During hydrogen charging, the hydrogen charging module is connected to at least one hydrogen storage device.

[0011] Preferably or optionally, a slide is provided at the bottom of the cabinet, the hydrogen production module and the hydrogen charging module are mounted on a main frame, and the main frame is slidably mounted in the slide.

[0012] Preferably or optionally, the electrolyzer is one of a proton exchange membrane electrolyzer, an alkaline electrolyzer or an anion exchange membrane electrolyzer.

[0013] Preferably or optionally, the hydrogen charging module comprises: a hydrogen charging pipeline connected to the hydrogen production module, a gas-liquid separator and a drying device connected in series on the hydrogen charging pipeline, and a valve assembly arranged at the end of the hydrogen charging pipeline and connected to the hydrogen charging connector.

[0014] Preferably or optionally, the valve assembly comprises: a first stop valve arranged on the hydrogen filling pipeline, a multi-way pipe with one end connected to the hydrogen filling pipeline, and a plurality of second stop valves arranged between the other end of the multi-way pipe and the hydrogen filling connector.

[0015] Preferably or optionally, the oxygen-side outlet of the electrolyzer and / or the drain hole of the gas-liquid separator are connected to a water tank that provides water required by the PEM electrolyzer.

[0016] Preferably or optionally, the water tank is also provided with an exhaust port.

[0017] Preferably or optionally, a mains power interface and / or a solar energy interface electrically connected to the hydrogen production module is provided on the cabinet, and a power switch is provided between the hydrogen production module and the mains power interface and / or the solar energy interface.

[0018] Preferably or optionally, a photovoltaic panel is rotatably mounted on the upper portion of the cabinet, and the photovoltaic panel is wiredly connected to the solar energy interface.

[0019] Preferably or optionally, an accommodating space is horizontally arranged on the side of the cabinet, and the hydrogen charging connector is located or partially located in the accommodating space.

[0020] The utility model relates to a small integrated hydrogen production and charging device, which has the following beneficial effects compared with the prior art: the utility model can charge multiple hydrogen storage devices with hydrogen at the same time or in this way by providing at least two hydrogen charging connectors, which can save time for replacing hydrogen storage devices, and the electrolyzer does not need to be shut down, thereby improving the hydrogen production efficiency and service life of the electrolyzer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a small and medium-sized integrated hydrogen production and charging device of the utility model.

[0022] Figure 2 It is a schematic diagram of the internal structure of a small and medium-sized integrated hydrogen production and charging device of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the water tank in the utility model.

[0024] Figure 4It is a structural schematic diagram of the main frame in the utility model.

[0025] The accompanying drawings are marked as follows: 100, cabinet; 110, slide; 200, hydrogen production module; 300, hydrogen charging module; 400, main frame; 500, accommodating space; 600, hydrogen charging connector; 700, water tank; 710, water filling port; 720, exhaust port; 730, water outlet; 740, first reflux port; 750, second reflux port; 760, liquid level sensor; 810, multi-way pipe; 820, second stop valve; 910, AC power supply interface; 920, solar energy interface; 930, photovoltaic panel; 940, power switch. DETAILED DESCRIPTION

[0026] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0027] See attached Figures 1 to 4 A small-scale integrated hydrogen production and charging device includes: a cabinet 100, a hydrogen production module 200, a hydrogen charging module 300, and at least two hydrogen charging connectors 600.

[0028] The cabinet 100 is a rectangular parallelepiped or approximately rectangular parallelepiped, with a small size, and can be placed in a convenience store, a canteen, or a newsstand, forming the outer contour of the hydrogen production cabinet. The hydrogen production module 200 includes an electrolyzer arranged inside the cabinet 100, and the electrolyzer is one of a proton exchange membrane electrolyzer, an alkaline electrolyzer, or an anion exchange membrane electrolyzer. Preferably, the electrolyzer is a proton exchange membrane electrolyzer (PEM electrolyzer). The hydrogen charging module 300 is built into the cabinet 100 and connected to the hydrogen production module 200; the hydrogen charging connector 600 is connected to the end of the hydrogen charging module 300, and the hydrogen charging connector 600 corresponds one-to-one to the hydrogen storage device. When charging hydrogen, the hydrogen charging module 300 is connected to at least one hydrogen storage device.

[0029] In this embodiment, the PEM electrolyzer is used as an example to illustrate that the membrane electrode assembly of the PEM electrolyzer needs to undergo repeated wet / dry cycles, thermal shock and electrochemical stress during start-up and shutdown, which will accelerate the deactivation of the catalyst, membrane aging, gas diffusion layer structure damage and other phenomena, thereby shortening the effective service life of the membrane electrode assembly and the PEM electrolyzer. Therefore, the user can determine the number of hydrogen storage devices corresponding to the hydrogen charging module 300 according to the hydrogen production power and hydrogen charging speed of the PEM electrolyzer, so that the hydrogen charging module 300 is connected to at least one hydrogen storage device. In this embodiment, the PEM electrolyzer is mainly powered by the photovoltaic panel 930, so the hydrogen production efficiency is limited. During the hydrogen charging process, the hydrogen charging module 300 is connected to the hydrogen storage device in turn through multiple hydrogen charging connectors 600, so that the hydrogen storage device can be seamlessly switched during the hydrogen charging process, saving time for replacing the hydrogen storage device, and the PEM electrolyzer does not need to be shut down, thereby improving the hydrogen production efficiency and service life of the PEM electrolyzer.

[0030] See attached Figure 4 The hydrogen production module 200 and the hydrogen charging module 300 are modular structures, and the hydrogen production module 200 and the hydrogen charging module 300 are installed on the main frame 400, and a plurality of accommodating spaces 500 can also be provided on the main frame 400, which are suitable for placing hydrogen storage devices. Since the main frame 400 is heavy and difficult to be accurately and quickly installed in the cabinet 100, a slide 110 is provided at the bottom of the cabinet 100, and the slide 110 is a roller structure. The main frame 400 can be moved along the slide 110 to a predetermined position in the cabinet 100, and the main frame 400 is fixed by connecting keys such as bolts and slots.

[0031] It is understandable that the hydrogen production module 200 also includes: a water tank 700 arranged inside the cabinet 100 to provide water required by the PEM electrolyzer, and a water injection port 710 arranged on the side of the cabinet 100 and connected to the water tank 700. In order to facilitate the filling of water into the water tank 700, the water injection port 710 is arranged at an angle. The PEM electrolyzer produces hydrogen and oxygen by electrolyzing water, and the negative electrode of the PEM electrolyzer generates hydrogen and enters the hydrogen charging module 300. In addition, the oxygen side outlet of the PEM electrolyzer and / or the drainage hole of the gas-liquid separator are connected to the water tank 700, and an exhaust port 720 is also provided on the water tank 700. The water discharged from the PEM electrolyzer and the gas-liquid separator circulates into the water tank 700, and the interface is arranged at the top of the side of the water tank 700 to realize the recycling of pure water. See the attached Figure 3The water tank 700 is at least provided with: a water injection port 710 arranged on the side of the cabinet 100 and used to inject water into the water tank 700, a water outlet 730 for supplying water to the PEM electrolyzer, a first reflux port 740 connected to the oxygen side outlet of the PEM electrolyzer, a second reflux port 750 connected to the drainage hole of the gas-liquid separator, an exhaust port 720 arranged on the upper part of the water tank 700 and suitable for discharging exhaust gas, and a liquid level sensor 760 arranged in the water tank 700 and suitable for detecting the water level.

[0032] The hydrogen charging module 300 includes: a hydrogen charging pipeline connected to the hydrogen production module 200, a gas-liquid separator and a drying device connected in series on the hydrogen charging pipeline, and a valve assembly arranged at the end of the hydrogen charging pipeline and connected to the hydrogen charging connector 600. Since the hydrogen obtained in the hydrogen production module 200 generally contains a high amount of water, it is also necessary to perform a drying process. Therefore, a gas-liquid separator and a drying device are connected in series between the hydrogen production module 200 and the hydrogen charging module 300 in sequence. The liquid water in the mixed gas is physically separated by the gas-liquid separator, and the gaseous water in the mixed gas is separated by physical / chemical adsorption by the drying device, so as to maintain the dryness of the hydrogen in the hydrogen charging pipeline, avoid deactivation of the hydrogen storage powder built into the hydrogen storage bottle, and thus affect the hydrogen storage performance of the hydrogen storage bottle.

[0033] The valve assembly includes: a first stop valve disposed on the hydrogen charging pipeline, a multi-way pipe 810 having one end connected to the hydrogen charging pipeline, and a plurality of second stop valves 820 disposed between the remaining end of the multi-way pipe 810 and the hydrogen charging connector 600. When the first stop valve is controlled to be opened and closed, the hydrogen charging pipeline connecting the hydrogen production device and the first stop valve 810 to the hydrogen storage device is connected and closed; when any second stop valve 820 is controlled to be opened and closed, the pipeline of the hydrogen production device and the hydrogen storage device connected to the second stop valve 820 is connected and closed, thereby realizing seamless switching of multiple hydrogen storage devices during the hydrogen charging process.

[0034] In a further embodiment, the hydrogen production cabinet body 100 is provided with a mains power interface 910 and / or a solar energy interface 920 electrically connected to the hydrogen production module 200. A photovoltaic panel 930 is rotatably installed on the upper part of the hydrogen production cabinet body 100, and the photovoltaic panel 930 is connected to the solar energy interface 920 by a line. Among them, the solar energy interface 920 can meet the daily hydrogen production needs of the small-scale hydrogen production and hydrogen charging integrated device, and the mains power interface 910 can meet the hydrogen production needs of the small-scale hydrogen production and hydrogen charging integrated device at night or on rainy days. The cabinet body 100 is also provided with a power switch 940 to cut off or connect the electrical connection between the mains power interface 910 and / or the solar energy interface 920 and the hydrogen production module 200.

[0035] In a further embodiment, a plurality of accommodating spaces 500 are horizontally arranged on the side of the cabinet 100, and the accommodating spaces 500 are recessed in the side of the cabinet 100, and the hydrogen filling connector 600 is located at or partially located in the accommodating space 500, and the accommodating space 500 is located on the central axis of the hydrogen filling connector 600, thereby ensuring the stability of the connection between the hydrogen storage bottle and the hydrogenation device, and preventing the solid hydrogen storage powder in the hydrogen storage bottle from clogging the hydrogen filling port, thereby meeting the user's high-frequency, low-capacity hydrogenation needs.

[0036] 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 invention will not further describe various possible combinations.

Claims

1. A small-scale integrated hydrogen production and charging device, characterized in that: include: Cabinet (100); A hydrogen production module (200) comprises an electrolyzer arranged inside the cabinet (100); A hydrogen charging module (300) is built into the cabinet (100) and connected to the hydrogen production module (200); At least two hydrogen charging connectors (600) are connected to the ends of the hydrogen charging modules (300), and the hydrogen charging connectors (600) correspond one to one with the hydrogen storage devices; During hydrogen charging, the hydrogen charging module (300) is connected to at least one hydrogen storage device.

2. The small-scale integrated hydrogen production and charging device according to claim 1 is characterized in that: A slideway (110) is provided at the bottom of the cabinet (100), the hydrogen production module (200) and the hydrogen charging module (300) are installed on a main frame (400), and the main frame (400) is slidably installed in the slideway (110).

3. The small-scale integrated hydrogen production and charging device according to claim 1 is characterized in that: The electrolyzer is one of a proton exchange membrane electrolyzer, an alkaline electrolyzer or an anion exchange membrane electrolyzer.

4. The small-scale integrated hydrogen production and charging device according to claim 1 is characterized in that: The hydrogen charging module (300) comprises: a hydrogen charging pipeline connected to the hydrogen production module (200), a gas-liquid separator and a drying device connected in series on the hydrogen charging pipeline, and a valve assembly arranged at the end of the hydrogen charging pipeline and connected to the hydrogen charging connector (600).

5. The small-scale integrated hydrogen production and charging device according to claim 4 is characterized in that: The valve assembly comprises: a first stop valve arranged on the hydrogen filling pipeline, a multi-way pipe (810) having one end connected to the hydrogen filling pipeline, and a plurality of second stop valves (820) arranged between the other end of the multi-way pipe (810) and the hydrogen filling connector (600).

6. The small-scale integrated hydrogen production and charging device according to claim 5 is characterized in that: The oxygen side outlet of the electrolyzer and / or the drainage hole of the gas-liquid separator are connected to a water tank (700) that provides water required by the PEM electrolyzer.

7. The small-scale integrated hydrogen production and charging device according to claim 6 is characterized in that: The water tank (700) is also provided with an exhaust port (720).

8. The small-scale integrated hydrogen production and charging device according to claim 1 is characterized in that: A mains power interface (910) and / or a solar energy interface (920) electrically connected to the hydrogen production module (200) is provided on the cabinet (100), and a power switch (940) is provided between the hydrogen production module (200) and the mains power interface (910) and / or the solar energy interface (920).

9. The small-scale integrated hydrogen production and charging device according to claim 8, characterized in that: A photovoltaic panel (930) is rotatably mounted on the upper portion of the cabinet (100), and a line is connected between the photovoltaic panel (930) and the solar energy interface (920).

10. The small-scale integrated hydrogen production and charging device according to claim 1, characterized in that: A accommodating space (500) is horizontally arranged on the side of the cabinet (100), and the hydrogen charging connector (600) is located or partially located in the accommodating space (500).

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