Small photovoltaic hydrogen production and charging device

Abstract

The utility model discloses a small photovoltaic hydrogen production and charging device, and belongs to the technical field of new energy. Comprising a cabinet body, a hydrogen production module and a hydrogen charging module which are arranged in the cabinet body, a photovoltaic mounting frame which is rotatably mounted at the upper part of the cabinet body, a photovoltaic panel which is mounted on the photovoltaic mounting frame, and a supporting piece which is arranged between the cabinet body and the photovoltaic mounting frame and is used for keeping the photovoltaic panel inclined at a preset angle relative to the upper end surface of the cabinet body. According to the utility model, the large-area photovoltaic panel is arranged on the cabinet body through the rotating piece and the supporting piece, so that the installation and the angle adjustment of the photovoltaic panel are realized, the energy utilization rate of sunlight is improved, and the preparation requirement of green hydrogen is met. And meanwhile, universal wheels and a liftable fixing bracket are arranged at the bottom of the cabinet body, so that the mobility and the structural stability of the whole hydrogen production and charging device are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy, in particular to a small photovoltaic hydrogen production and charging device. Background Art

[0002] Depending on the preparation method, hydrogen can be divided into gray hydrogen, blue hydrogen and green hydrogen. Gray hydrogen is produced through the thermochemical conversion process of fossil fuels (such as oil, natural gas, coal); blue hydrogen is made by steam methane reforming or autothermal steam reforming of natural gas. Green hydrogen is hydrogen produced by using renewable energy (such as solar energy, wind energy, nuclear energy, etc.). Although hydrogen energy is a clean renewable energy source and there is no carbon emission in the process of releasing energy, the current process of producing hydrogen energy is not truly "zero carbon". The transition from gray hydrogen to blue hydrogen and then to the ultimate realization of green hydrogen is the future trend of low-carbon and carbon-free hydrogen energy.

[0003] Photovoltaic hydrogen production equipment is a combination of photovoltaic power generation and hydrogen production technology, using photovoltaic power generation and electrolytic hydrogen production to produce hydrogen. For large-scale photovoltaic hydrogen production equipment, the photovoltaic module and hydrogen production module are generally designed as a split type, and the photovoltaic module is installed on the roof, ground bracket and other sites, and connected to the indoor hydrogen production device cable for power supply, resulting in poor flexibility of the entire device and inability to move. For small photovoltaic hydrogen production equipment, in order to ensure the stability and mobility of the entire equipment, it is generally chosen to reduce the area of ​​the photovoltaic module and use the photovoltaic panel as an auxiliary energy source.

[0004] With the application and popularization of small hydrogen storage devices and fuel cell stacks, the demand for hydrogen refueling has also increased dramatically. Therefore, it is urgent to design a mobile small hydrogen production and filling device to meet users' needs for frequent hydrogen refueling and green hydrogen energy. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides a small photovoltaic hydrogen filling device to solve the problems involved in the background technology.

[0006] The utility model provides a small photovoltaic hydrogen production and filling device, comprising: a cabinet, a hydrogen production module and a hydrogen filling module arranged inside the cabinet, a photovoltaic mounting frame rotatably mounted on the upper part of the cabinet, a photovoltaic panel mounted on the photovoltaic mounting frame, and a support member arranged between the cabinet and the photovoltaic mounting frame and keeping the photovoltaic panel inclined at a predetermined angle relative to the upper end surface of the cabinet.

[0007] Preferably or optionally, the support member comprises:

[0008] The hinge structure comprises a support plate fixedly mounted on the bottom of the photovoltaic mounting frame, an arc-shaped slot arranged on the support plate, and a first locking bolt mounted on the cabinet and matched with the arc-shaped slot;

[0009] The nitrogen spring has two ends hingedly installed between the photovoltaic mounting frame and the upper end surface of the cabinet.

[0010] Preferably or optionally, a plurality of universal wheels and at least one liftable fixed bracket are provided at the bottom of the cabinet.

[0011] Preferably or optionally, the fixing bracket includes a second locking nut installed at the bottom of the cabinet, a slide groove in the middle, a supporting leg clamped on the second locking nut through the slide groove, and a fixing hole reserved at the bottom of the supporting leg.

[0012] Preferably or optionally, a locking structure is provided between the cabinet and the photovoltaic mounting frame to keep the photovoltaic panel attached to the upper end surface of the cabinet.

[0013] Preferably or optionally, the cabinet is also provided with a mains power supply interface and / or a solar energy interface electrically connected to the hydrogen production module;

[0014] The solar energy interface is wired to the photovoltaic panel.

[0015] Preferably or optionally, the cabinet is also provided with a power switch to cut off or connect the electrical connection between the mains power interface and / or the solar energy interface and the hydrogen production module.

[0016] Preferably or optionally, the hydrogen production module comprises: a PEM electrolyzer arranged inside the cabinet, a water tank arranged inside the cabinet and providing water required by the PEM electrolyzer, and a water inlet arranged on a side of the cabinet and connected to the water tank.

[0017] 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 plurality of hydrogen charging connectors arranged at the end of the hydrogen charging pipeline.

[0018] Preferably or optionally, a plurality of accommodating spaces are horizontally arranged on the side of the cabinet, and the hydrogen charging connector is located or partially located in the accommodating space.

[0019] The utility model relates to a small photovoltaic hydrogen production and filling device, which has the following beneficial effects compared with the prior art: the utility model realizes the installation and angle adjustment of photovoltaic panels by installing large-area photovoltaic panels on a cabinet through rotating parts and supporting parts, thereby improving the energy utilization rate of sunlight and meeting the needs of green hydrogen preparation. At the same time, universal wheels and liftable fixed brackets are provided at the bottom of the cabinet to ensure the mobility and structural stability of the entire hydrogen production and filling device. Moreover, the small photovoltaic hydrogen production and filling device of the utility model can charge multiple hydrogen storage devices, saving the time of replacing hydrogen storage devices and improving the hydrogen production efficiency of PEM electrolyzers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the hydrogen filling device in the utility model in an unfolded state.

[0021] Figure 2 It is a structural schematic diagram of the hydrogen filling device in the utility model in a folded state.

[0022] Figure 3 It is a partial enlarged view of the hinge structure of the utility model.

[0023] The accompanying drawings are marked as follows: 100, cabinet; 110, universal wheel; 120, fixed bracket; 121, second locking nut; 122, support leg; 123, slide groove; 124, fixing hole; 130, AC power supply interface; 140, solar energy interface; 150, power switch; 160, water inlet; 170, accommodating space; 210, photovoltaic mounting frame; 220, photovoltaic panel; 300, rotating part; 410, hinge structure; 411, support plate; 412, arc-shaped slot; 413, first locking bolt; 420, nitrogen spring; 500, locking structure. DETAILED DESCRIPTION

[0024] 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.

[0025] See attached Figures 1 to 3 A small photovoltaic hydrogen filling device includes: a cabinet 100, a photovoltaic mounting frame 210, a photovoltaic panel 220, a rotating member 300, a supporting member and a locking structure 500.

[0026] A hydrogen production module and a hydrogen charging module are arranged inside the cabinet 100. The hydrogen production module includes: a PEM electrolyzer arranged inside the cabinet 100, a water tank arranged inside the cabinet 100 and providing water required by the PEM electrolyzer, and a water injection port 160 arranged on the side of the cabinet 100 and connected to the water tank. In order to facilitate the filling of water into the water tank, the water injection port 160 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. The hydrogen charging module includes: 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 plurality of hydrogen charging connectors arranged at the end of the hydrogen charging pipeline. Since the hydrogen obtained in the hydrogen production module generally contains a high amount of water, it needs to be dried. Therefore, a gas-liquid separator and a drying device are connected in series between the hydrogen production module and the hydrogen filling module 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 in the drying device to maintain the dryness of the hydrogen in the hydrogen filling pipeline, thereby avoiding the deactivation of the hydrogen storage powder built into the hydrogen storage device, which in turn affects the hydrogen storage performance of the hydrogen storage device.

[0027] The photovoltaic mounting frame 210 is rotatably mounted on the upper part of the cabinet 100, and the photovoltaic panel 220 is mounted on the photovoltaic mounting frame 210. A support is provided between the cabinet 100 and the photovoltaic mounting frame 210 to keep the photovoltaic panel 220 tilted at a predetermined angle relative to the upper end surface of the cabinet 100. Specifically, the support includes: a hinge structure 410 and a nitrogen spring 420. The hinge structure 410 includes a support plate 411 fixedly mounted on the bottom of the photovoltaic mounting frame 210, an arc-shaped slot 412 provided on the support plate 411, and a first locking bolt 413 mounted on the cabinet 100 and matched with the arc-shaped slot 412; the nitrogen spring 420 is hingedly mounted at both ends between the photovoltaic mounting frame 210 and the upper end surface of the cabinet 100. The photovoltaic panel 220 is supported by the nitrogen spring 420 to form a certain angle. At the same time, by rotating the first locking bolt 413, the photovoltaic panel 220 is installed and the angle is adjusted, thereby improving the energy utilization of sunlight and meeting the independent power supply requirements of the hydrogen storage cabinet.

[0028] In a further embodiment, a plurality of universal wheels 110 and at least one liftable fixed bracket 120 are provided at the bottom of the cabinet 100; wherein at least one universal wheel 110 is provided with a brake pad. The fixed bracket 120 includes a second locking nut 121 installed at the bottom of the cabinet 100, a slide groove 123 in the middle, a support leg 122 clamped on the second locking nut 121 through the slide groove 123, and a fixing hole 124 reserved at the bottom of the support leg 122. When the cabinet 100 needs to be moved, the fixed bracket 120 can be folded up to ensure the mobility of the entire hydrogen production and filling device; when the photovoltaic panel 220 is used to generate electricity to power the hydrogen production module, the fixed bracket 120 can be extended, and the cabinet 100 can be fixed by bolts to ensure the stability of the entire hydrogen production and filling device.

[0029] In a further embodiment, a locking structure 500 is further provided between the cabinet 100 and the photovoltaic mounting frame 210 to keep the photovoltaic panel 220 attached to the upper end surface of the cabinet 100. The locking structure 500 may be a snap-fit ​​structure or a magnetic structure to fix the photovoltaic mounting frame 210 and the photovoltaic panel 220, thereby facilitating the transportation of the hydrogen production and charging device.

[0030] In a further embodiment, the cabinet 100 is also provided with a mains power interface 130 and / or a solar energy interface 140 electrically connected to the hydrogen production module; the solar energy interface 140 is connected to the photovoltaic panel 220. The solar energy interface 140 can meet the daily hydrogen production needs of the hydrogen production and charging device, and the mains power interface 130 can meet the hydrogen production needs of the hydrogen production and charging device at night or on rainy days. The cabinet 100 is also provided with a power switch 150 to cut off or connect the electrical connection between the mains power interface 130 and / or the solar energy interface 140 and the hydrogen production module.

[0031] In a further embodiment, a plurality of accommodating spaces 170 are horizontally arranged on the side of the cabinet 100, and the accommodating spaces 170 are recessed in the side of the cabinet 100, and the hydrogen charging connector is located or partially located in the accommodating space 170, and the accommodating space 170 is located on the central axis of the hydrogen charging connector, thereby ensuring the stability of the connection between the hydrogen storage device and the hydrogenation device, and preventing the solid hydrogen storage powder in the hydrogen storage device from clogging the hydrogen charging port, thereby meeting the user's high-frequency, low-capacity hydrogenation needs. Among them, the end of the hydrogen charging pipeline is connected to the hydrogen charging connector through a multi-way pipe and a stop valve, and the stop valve can be a solenoid valve or other type of electrically controlled valve, and the pipeline connection between the hydrogen charging module and a single hydrogen storage device is realized through the cooperation of the stop valve.

[0032] 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 photovoltaic hydrogen filling device, characterized in that: include: A cabinet (100), a hydrogen production module and a hydrogen charging module arranged inside the cabinet (100), a photovoltaic mounting frame (210) rotatably mounted on the upper part of the cabinet (100), a photovoltaic panel (220) mounted on the photovoltaic mounting frame (210), and a support member arranged between the cabinet (100) and the photovoltaic mounting frame (210) and maintaining the photovoltaic panel (220) inclined at a predetermined angle relative to the upper end surface of the cabinet (100).

2. The small photovoltaic hydrogen filling device according to claim 1, characterized in that: The support member comprises: A hinge structure (410) comprising a support plate (411) fixedly mounted on the bottom of the photovoltaic mounting frame (210), an arc-shaped slot (412) arranged on the support plate (411), and a first locking bolt (413) mounted on the cabinet (100) and cooperating with the arc-shaped slot (412); The nitrogen spring (420) has two ends hingedly mounted between the photovoltaic mounting frame (210) and the upper end surface of the cabinet (100).

3. The small photovoltaic hydrogen filling device according to claim 1, characterized in that: The bottom of the cabinet (100) is provided with a plurality of universal wheels (110) and at least one liftable fixed bracket (120).

4. The small photovoltaic hydrogen production and filling device according to claim 3 is characterized in that: The fixing bracket (120) comprises a second locking nut (121) mounted on the bottom of the cabinet (100), a slide groove (123) in the middle, a supporting leg (122) clamped on the second locking nut (121) through the slide groove (123), and a fixing hole (124) reserved at the bottom of the supporting leg (122).

5. The small photovoltaic hydrogen filling device according to claim 1, characterized in that: A locking structure (500) is also provided between the cabinet (100) and the photovoltaic mounting frame (210) for keeping the photovoltaic panel (220) in contact with the upper end surface of the cabinet (100).

6. The small photovoltaic hydrogen production and filling device according to claim 1, characterized in that: The cabinet (100) is also provided with a mains power supply interface (130) and / or a solar energy interface (140) electrically connected to the hydrogen production module; The solar energy interface (140) is wiredly connected to the photovoltaic panel (220).

7. The small photovoltaic hydrogen production and filling device according to claim 6, characterized in that: The cabinet (100) is also provided with a power switch (150) for cutting off or connecting the electrical connection between the mains power interface (130) and / or the solar energy interface (140) and the hydrogen production module.

8. The small photovoltaic hydrogen production and filling device according to claim 1, characterized in that: The hydrogen production module comprises: a PEM electrolyzer arranged inside the cabinet (100), a water tank arranged inside the cabinet (100) and providing water required by the PEM electrolyzer, and a water injection port (160) arranged on a side of the cabinet (100) and connected to the water tank.

9. The small photovoltaic hydrogen production and filling device according to claim 1, characterized in that: 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 plurality of hydrogen charging connectors arranged at the end of the hydrogen charging pipeline.

10. The small photovoltaic hydrogen production and filling device according to claim 9, characterized in that: A plurality of accommodating spaces (170) are horizontally arranged on the side of the cabinet (100), and the hydrogen charging connector is located or partially located in the accommodating space (170).

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