Electrolytic hydrogen production system with hydrogen storage function
The electrolytic hydrogen production system with a hydrogen storage device addresses the slow production speed of existing systems by storing excess hydrogen for peak demand, ensuring continuous supply and reducing energy consumption.
Patent Information
- Application Number
- CN202420187919.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-26
AI Technical Summary
Existing home hydrogen production systems using water electrolysis have low power and slow hydrogen production speed, failing to meet the large hydrogen demand of hydrogen-using equipment in a short period of time.
An electrolytic hydrogen production system with a hydrogen storage device, comprising an electrolyzer, compressor, hydrogen-using device, hydrogen storage device, and control unit, which stores excess hydrogen for later use during peak demand, utilizing off-peak electrolysis and hydrogen conversion to electrical energy.
Ensures continuous hydrogen supply by storing excess hydrogen for peak demand, reducing energy consumption and costs by converting hydrogen to electricity when needed, thus meeting demand efficiently.
Smart Images
Figure CN222182473U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of hydrogen energy, in particular to an electrolytic hydrogen production system with a hydrogen storage function. Background Art
[0002] Home hydrogen production refers to the production of hydrogen in a home environment. At present, the technology of home hydrogen production is still in the development stage. Hydrogen production generally requires the use of water electrolysis to decompose water into hydrogen and oxygen, and then transport the hydrogen to the hydrogen-using equipment.
[0003] For example: The patent document with patent number 202110225802.2 discloses a hydrogen production device for household emergency power supply, including a raw material supply unit main unit, a methanol-water raw material container, a dual combustion unit, a gasification chamber, a reaction chamber, a purification chamber, an adsorption chamber, a combustion battery unit, an inverter output unit, a power supply control unit, a human-machine interface unit and a household power supply circuit; outlets are fixedly installed on the left and right sides of the top of the methanol-water raw material container, and lifting sleeves are rotatably connected on the left and right sides of the bottom of the top plate of the main unit of the raw material supply unit. The internal thread of the lifting sleeve is connected with a connecting pipe, and the lower end of the connecting pipe passes through the outlet and extends to the interior of the methanol-water raw material container. A worm is fixedly sleeved on the outer surface of the lifting sleeve, and a drive motor is fixedly installed on the bottom of the top plate of the main unit of the raw material supply unit, and the output shaft of the drive motor is fixedly connected with a worm gear, which is meshed with the worm gear, and a protective gas storage tank is fixedly installed on the top of the main unit of the raw material supply unit.
[0004] The above patented solution can use methanol-water mixed liquid in containers as raw materials, and generate high-purity hydrogen through processes such as gasification, reforming catalytic reaction, purification, and adsorption, which is then input into the fuel cell unit. The generated electricity is then input into the household power supply circuit after inverter. It is safe, environmentally friendly, economical and practical, and is suitable as an emergency power supply for urban households.
[0005] However, the water electrolysis equipment of the above patent solution has low power and slow hydrogen production speed, and cannot meet the large amount of hydrogen demand of hydrogen-using equipment in a short period of time.
[0006] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Utility Model Content
[0007] The purpose of the utility model is to provide an electrolytic hydrogen production system with a hydrogen storage function. By adding a hydrogen storage device to the domestic hydrogen production system, the hydrogen produced by the domestic hydrogen production system can be stored. When the hydrogen device has a demand, the hydrogen storage device can provide a large amount of hydrogen in a short time to meet the demand.
[0008] The above technical objectives of the utility model are achieved through the following technical solutions:
[0009] An electrolytic hydrogen production system with hydrogen storage function, comprising an electrolyzer, a compressor, a hydrogen-using device, a hydrogen storage device, a fuel cell and a control unit. The electrolyzer produces hydrogen by electrolysis, the generated hydrogen is compressed by the compressor and then supplied to the hydrogen-using device, and the excess hydrogen is stored in the hydrogen storage device and supplied to the fuel cell and then converted into electrical energy again;
[0010] The hydrogen outlet of the compressor is connected to a first pipeline and a second pipeline respectively, and the electrolyzer is connected to the hydrogen-using device through the first pipeline, and the electrolyzer is connected to the hydrogen storage device through the second pipeline, and a control valve is provided on the second pipeline for opening / closing the second pipeline;
[0011] The hydrogen storage device is provided with a hydrogen sensor for detecting the amount of hydrogen stored in the hydrogen storage device;
[0012] The output end of the hydrogen sensor is connected to the signal input end of the control unit, and the signal output end of the control unit is respectively connected to the electrolyzer, the compressor and the control valve; the control unit switches the working states of the electrolyzer, the compressor and the control valve according to the hydrogen storage amount in the hydrogen storage device and time.
[0013] Furthermore, the hydrogen outlet of the compressor is provided with a first interface and a second interface, one end of the first pipeline is connected to the compressor through the first interface, and the other end of the first pipeline is connected to the hydrogen-using equipment; one end of the second pipeline is connected to the compressor through the second interface, and the other end of the second pipeline is connected to the hydrogen storage equipment.
[0014] Furthermore, the electrolytic hydrogen production system starts electrolytic hydrogen production during the off-peak period of electricity consumption, i.e., the valley period. The hydrogen required by the hydrogen-using equipment is supplied by the electrolyzer through the first pipeline, and the excess hydrogen prepared by the electrolyzer is transported by the second pipeline to the hydrogen storage device for storage and supplied to the fuel cell to convert the excess hydrogen back into electrical energy and connect to the power grid for storage.
[0015] Furthermore, the hydrogen storage device is connected to the hydrogen-using device via a third pipeline, and a control valve is provided on the third pipeline.
[0016] Furthermore, the electrolytic hydrogen production system stops producing hydrogen during the peak period of electricity consumption, the hydrogen required by the hydrogen-using equipment is supplied by the hydrogen storage equipment through the third pipeline, and the hydrogen consumed in the hydrogen storage equipment is replenished by the electrolyzer through the second pipeline during the off-peak period.
[0017] In summary, the utility model has the following beneficial effects:
[0018] 1. By adding hydrogen storage equipment to the household hydrogen production system to store the hydrogen produced by the household hydrogen production system, when the hydrogen-using equipment has demand, the hydrogen storage equipment can provide a large amount of hydrogen in a short time to meet the demand.
[0019] 2. Electrolysis is used to produce hydrogen by electrolysis. The generated hydrogen can be supplied to the back-end hydrogen-demanding equipment after being compressed by a compressor. At the same time, the excess hydrogen will also be stored in the hydrogen storage equipment. When the storage tank equipment is full, the hydrogen will also be supplied to the fuel cell to react and generate electricity and be connected to the power grid for storage. During the peak period, the electrolyzer stops producing hydrogen and the hydrogen storage equipment releases hydrogen to the hydrogen-using equipment and the fuel cell to react and generate electricity. This can not only ensure continuous hydrogen but also reduce energy consumption to the greatest extent, while also reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural block diagram of the electrolytic hydrogen production system with hydrogen storage function described in the utility model.
[0021] Figure 2 It is a schematic diagram of the electrolytic hydrogen production system with hydrogen storage function described in the utility model.
[0022] Figure 3 It is a control logic diagram of the electrolytic hydrogen production system with hydrogen storage function described in the utility model. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with illustrations and specific embodiments.
[0024] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model proposes an electrolytic hydrogen production system with hydrogen storage function, including an electrolyzer, a compressor, a hydrogen-using device, a hydrogen storage device, a fuel cell and a control unit. The electrolyzer prepares hydrogen by electrolysis, and the generated hydrogen is compressed by the compressor and supplied to the hydrogen-using device. The excess hydrogen is stored in the hydrogen storage device and supplied to the fuel cell for power generation;
[0025] The hydrogen outlet of the compressor is connected to a first pipeline and a second pipeline respectively, and the electrolyzer is connected to the hydrogen-using device through the first pipeline, and the electrolyzer is connected to the hydrogen storage device through the second pipeline, and a control valve is provided on the second pipeline for opening / closing the second pipeline;
[0026] The hydrogen storage device is provided with a hydrogen sensor for detecting the amount of hydrogen stored in the hydrogen storage device;
[0027] The output end of the hydrogen sensor is connected to the signal input end of the control unit, and the signal output end of the control unit is respectively connected to the electrolyzer, the compressor and the control valve; the control unit switches the working states of the electrolyzer, the compressor and the control valve according to the hydrogen storage amount in the hydrogen storage device.
[0028] The hydrogen outlet of the compressor is provided with a first interface and a second interface, one end of the first pipeline is connected to the compressor through the first interface, and the other end of the first pipeline is connected to the hydrogen-using equipment; one end of the second pipeline is connected to the compressor through the second interface, and the other end of the second pipeline is connected to the hydrogen storage equipment.
[0029] The electrolytic hydrogen production system starts electrolytic hydrogen production during the off-peak period of electricity consumption, i.e., the valley period. The hydrogen required by the hydrogen-using equipment is supplied by the electrolyzer through the first pipeline, and the excess hydrogen prepared by the electrolyzer is transported by the second pipeline to the hydrogen storage device for storage and to the fuel cell to convert the excess hydrogen back into electrical energy and connect to the power grid for storage.
[0030] The hydrogen storage device is connected to the hydrogen using device through a third pipeline, and a control valve is arranged on the third pipeline.
[0031] The electrolytic hydrogen production system stops producing hydrogen during the peak period of electricity consumption, and the hydrogen required by the hydrogen-using equipment is supplied by the hydrogen storage equipment through the third pipeline, and the hydrogen consumed in the hydrogen storage equipment is replenished by the electrolyzer through the second pipeline during the off-peak period.
[0032] It should be pointed out that the hydrogen sensor, control unit and control valve in this application are adopted in the market without any improvement, and their related structures and principles belong to the prior art, so this application will not describe them in detail.
[0033] The working principle of the utility model is as follows:
[0034] The hydrogen produced by electrolysis in the electrolyzer during the low electricity consumption period is compressed by a compressor and provided to the required equipment. At the same time, the excess hydrogen is stored in a tank through an open valve and supplied to the fuel cell to react and regenerate electricity. Hydrogen production is stopped when the electricity consumption is at peak.
[0035] When the hydrogen storage device supplies hydrogen to the equipment during the peak period, the valve is first opened to supply the hydrogen in the storage tank to the equipment. At the same time, it is supplied to the fuel cell to generate electricity for home use until the electricity consumption is low or the hydrogen storage device is exhausted. This is the dotted line part that automatically controls and starts the hydrogen production process.
[0036] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description. Therefore, they should not be understood as limitations on the present invention.
[0037] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.
[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An electrolytic hydrogen production system with hydrogen storage function, comprising an electrolyzer, a compressor, a hydrogen-using device, a fuel cell, a hydrogen storage device and a control unit, wherein the electrolyzer produces hydrogen by electrolysis, the generated hydrogen is compressed by the compressor and supplied to the hydrogen-using device, and the excess hydrogen is stored in the hydrogen storage device and provided to the fuel cell for hydrogen power generation; It is characterized in that The hydrogen outlet of the compressor is connected to a first pipeline and a second pipeline respectively, and the electrolyzer is connected to the hydrogen-using device through the first pipeline, and the electrolyzer is connected to the hydrogen storage device through the second pipeline, and a control valve is provided on the second pipeline for opening / closing the second pipeline; The hydrogen storage device is provided with a hydrogen sensor for detecting the amount of hydrogen stored in the hydrogen storage device; The output end of the hydrogen sensor is connected to the signal input end of the control unit, and the signal output end of the control unit is respectively connected to the electrolyzer, the compressor and the control valve; the control unit switches the working states of the electrolyzer, the compressor and the control valve according to the hydrogen storage amount in the hydrogen storage device and time.
2. The electrolytic hydrogen production system with hydrogen storage function according to claim 1, characterized in that: The hydrogen outlet of the compressor is provided with a first interface and a second interface, one end of the first pipeline is connected to the compressor through the first interface, and the other end of the first pipeline is connected to the hydrogen-using equipment; one end of the second pipeline is connected to the compressor through the second interface, and the other end of the second pipeline is connected to the hydrogen storage equipment.
3. The electrolytic hydrogen production system with hydrogen storage function according to claim 2, characterized in that: Electrolysis to produce hydrogen begins during the off-peak period of electricity consumption, and the hydrogen required by the hydrogen-using equipment is supplied by the electrolyzer through the first pipeline. The excess hydrogen prepared by the electrolyzer is transported by the second pipeline to the hydrogen storage device for storage and to the fuel cell to convert the excess hydrogen back into electrical energy and connect it to the power grid for storage.
4. The electrolytic hydrogen production system with hydrogen storage function according to claim 1, characterized in that: The hydrogen storage device is connected to the hydrogen using device through a third pipeline, and a control valve is arranged on the third pipeline.
5. The electrolytic hydrogen production system with hydrogen storage function according to claim 4, characterized in that: The electrolytic hydrogen production system stops producing hydrogen during the peak period of electricity consumption, and the hydrogen required by the hydrogen-using equipment is supplied by the hydrogen storage equipment through the third pipeline, and the hydrogen consumed in the hydrogen storage equipment is replenished by the electrolyzer through the second pipeline during the off-peak period.