Fixed fuel cell power generation device

Abstract

The invention discloses a fixed fuel cell power generation device which is characterized in that the power generation device comprises a container body (1), the interior of the container body (1) is divided into a non-hydrogen-related area, a first hydrogen-related area and a second hydrogen-related area through metal plates, and a PCS energy storage converter (2), a lithium battery cabinet (3) and an electric control cabinet (4) are arranged in the non-hydrogen-related area; and a plurality of lithium batteries (5) are arranged in the lithium battery cabinet (3). The fixed type fuel cell power generation device is simple in structure, ingenious in design, reasonable in layout and capable of effectively utilizing waste heat generated when a fuel cell system works on the premise that safety is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of new energy, and in particular to a fixed fuel cell power generation device. Background Art

[0002] Hydrogen energy is a clean and efficient secondary energy source with many advantages such as wide source, high calorific value, storability and convertibility. It is an important component of the future clean energy system. Fuel cells are one of the best ways to utilize hydrogen energy. They have been widely used in automobiles, rail transportation, ships, mobile power generation, fixed power generation and other fields.

[0003] The fuel cell power generation system has a complex internal structure, numerous components, a complicated installation process, and is greatly affected by environmental factors (temperature, humidity, altitude, air quality, etc.).

[0004] At present, the existing fuel cell power generation system has the following disadvantages: the structure is not compact and occupies a large space; the external dimensions are not uniform, and transportation and loading and unloading are difficult; the protection level cannot meet the requirements for installation in outdoor environments; and the fuel cell power generation system will generate a large amount of waste heat during operation, which is traditionally directly discharged into the environment, resulting in a certain amount of energy waste.

[0005] The most important thing is that hydrogen is a flammable gas. In traditional fuel cell power generation systems, hydrogen-related areas and non-hydrogen-related areas are not isolated, posing a major safety hazard.

[0006] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention

[0007] The present invention aims to solve the above-mentioned deficiencies in the prior art and proposes a fixed fuel cell power generation device with simple structure, ingenious design, reasonable layout, and the ability to effectively utilize the waste heat generated by the fuel cell system when it is working while ensuring safety.

[0008] The technical solution of the present invention is: a fixed fuel cell power generation device, characterized in that: the power generation device comprises a container body 1, the interior of the container body 1 is divided into three parts: a non-hydrogen-related area, a first hydrogen-related area, and a second hydrogen-related area by a metal plate. The non-hydrogen-related area is provided with a PCS energy storage converter 2, a lithium battery cabinet 3 and an electric control cabinet 4. The lithium battery cabinet 3 is provided with a plurality of lithium batteries 5. The first hydrogen-related area is provided with n fuel cell systems 6, where n is a natural number. A plate heat exchanger 7 is provided below each fuel cell system 6. The container body 1 above the first hydrogen-related area is provided with n fuel cell cooling systems 8, and the n fuel cell cooling systems 8 correspond one to one to the n fuel cell systems 6, respectively. An air intake pipeline 9 is also provided on the top of the container body 1, and the outlet of the air intake pipeline 9 is connected to the inlet of the air filter 10, and the outlet of the air filter 10 is connected to the air inlet of all fuel cell systems 6 through a pipeline. The fuel cell cooling system 8 is connected to the corresponding fuel cell system 6 via a heat exchange pipeline 10. A water pump 11 is provided on the heat exchange pipeline 10. The fuel cell cooling system 8 includes a water tank 12. A hydrogen input pipeline 13 is provided in the second hydrogen-related area, the inlet end of the hydrogen input pipeline 13 is located outside the container body 1, and the outlet end of the hydrogen input pipeline 13 is respectively connected to the hydrogen inlets of the n fuel cell systems 6 through multiple pipelines. A power generation device tail exhaust pipeline 14 is also provided in the second hydrogen-related area, the outlet end of the power generation device tail exhaust pipeline 14 is located outside the container body 1, and the inlet end of the power generation device tail exhaust pipeline 14 is respectively connected to the fuel cell tail exhaust pipelines of the n fuel cell systems 6 through multiple pipelines. The heat exchange pipelines of the n plate heat exchangers 7 are all connected to the combined heat and power heating interface 15 , and the combined heat and power heating interface 15 is also connected to the outside of the container body 1 .

[0009] The container body 1 is a standard container of 6 meters or 12 meters, and the protection level is D.

[0010] Compared with the prior art, the present invention has the following advantages: This type of fixed fuel cell power generation device has a simple structure, ingenious design, and reasonable layout. It is designed with a special structure to address the problems existing in the operation of traditional fuel cell power generation devices. First, it uses a standard container as a carrier, which is convenient for storage and transportation; second, it uses metal plates to divide the interior of the container into two different areas: non-hydrogen-related areas and hydrogen-related areas. During operation, all related structures involving hydrogen are placed in the hydrogen-related areas to improve safety; third, it also configures a set of plate heat exchangers for each fuel cell system. The plate heat exchanger can recover the heat generated during the operation of the fuel cell system. On the one hand, it can cool the fuel cell system so that it can work stably and normally; on the other hand, it can output this part of the heat to external heating equipment to realize the utilization of waste heat; In addition, the manufacturing process of this fixed fuel cell power generation device is simple and the manufacturing cost is low. Therefore, it can be said that it has many advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention.

[0012] Figure 2 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention (cross-sectional view).

[0013] Figure 3 2 is a top view of an embodiment of the present invention.

[0014] Figure 4 It is a front view (cross-sectional view) of an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figures 1 to 4 As shown: A fixed fuel cell power generation device, which includes a container body 1 as a basis, the interior of the container body 1 is divided into three parts: a non-hydrogen-related area, a first hydrogen-related area, and a second hydrogen-related area by a metal plate. The non-hydrogen-related area is provided with a PCS energy storage converter 2, a lithium battery cabinet 3 and an electric control cabinet 4. The lithium battery cabinet 3 is provided with a plurality of lithium batteries 5. The first hydrogen-related area is provided with n fuel cell systems 6, where n is a natural number. A plate heat exchanger 7 is provided below each fuel cell system 6. The container body 1 above the first hydrogen-related area is provided with n fuel cell cooling systems 8, and the n fuel cell cooling systems 8 correspond one to one to the n fuel cell systems 6, respectively. An air intake pipeline 9 is also provided on the top of the container body 1, and the outlet of the air intake pipeline 9 is connected to the inlet of the air filter 10, and the outlet of the air filter 10 is connected to the air inlet of all fuel cell systems 6 through a pipeline. The fuel cell cooling system 8 is connected to the corresponding fuel cell system 6 via a heat exchange pipeline 10. A water pump 11 is provided on the heat exchange pipeline 10. The fuel cell cooling system 8 includes a water tank 12. A hydrogen input pipeline 13 is provided in the second hydrogen-related area, the inlet end of the hydrogen input pipeline 13 is located outside the container body 1, and the outlet end of the hydrogen input pipeline 13 is respectively connected to the hydrogen inlets of the n fuel cell systems 6 through multiple pipelines. A power generation device tail exhaust pipeline 14 is also provided in the second hydrogen-related area, the outlet end of the power generation device tail exhaust pipeline 14 is located outside the container body 1, and the inlet end of the power generation device tail exhaust pipeline 14 is respectively connected to the fuel cell tail exhaust pipelines of the n fuel cell systems 6 through multiple pipelines. The heat exchange pipelines of the n plate heat exchangers 7 are all connected to the combined heat and power heating interface 15 , and the combined heat and power heating interface 15 is also connected to the outside of the container body 1 .

[0016] The container body 1 is a standard container of 6 meters or 12 meters.

[0017] The electric control cabinet 4 is also provided with a control system, which can uniformly control the PCS energy storage converter 2, the lithium battery cabinet 3, various control elements in the electric control cabinet 4, the fuel cell system, the water pump 11 and the fuel cell cooling system 8.

[0018] The working process of the fixed fuel cell power generation device of the embodiment of the present invention is as follows: the inlet end of the hydrogen input pipeline 13 is connected to the hydrogen source through a pipeline, and the outlet end of the cogeneration heating interface 15 is connected to the heating equipment through a pipeline. During operation, hydrogen is supplied to the multiple fuel cell systems 6 through the hydrogen input pipeline 13, and the fuel cell systems 6 operate and generate electrical energy, which can be directly connected to the grid or stored; when current needs to be connected to the grid, the current is processed by the PCS energy storage converter and converted into 380V three-phase electricity, which is directly transmitted to the grid; During operation, the current generated during the trough period of electricity consumption can be rectified into direct current with stable pressure by the rectifying and voltage-stabilizing circuit in the electric control cabinet 4, and then input into the multiple lithium batteries 5 stored in the lithium battery cabinet 3; in this way, if an emergency situation (such as a power outage in a factory) occurs and the various electrical facilities in the device cannot work, the electrical energy in the lithium battery 5 can be directly used to supply the electrical facilities in the device to ensure that the device can work normally.

[0019] During the operation of the fuel cell system 6, a large amount of heat energy is generated while consuming hydrogen and generating electricity. Since each fuel cell system 6 is equipped with a plate heat exchanger 7, the heat exchange medium in the plate heat exchanger 7 can absorb the heat energy generated by the fuel cell system 6 during operation and transmit it to the heating equipment through the pipeline connected to the cogeneration heating interface 15, thereby realizing waste heat recovery of the fuel cell system; At the same time, a part of the heat will be transported to the fuel cell cooling system 8 by the heat exchange medium flowing in the heat exchange pipe 10. The water pump 11 on the heat exchange pipe 10 will work to make the water in the water tank 12 circulate back and forth between the fuel cell system 6 and the fuel cell cooling system 8. The water will take the heat out of the fuel cell system 6, and the fan in the fuel cell cooling system 8 will directly dissipate this part of the heat to the environment outside the container body 1, thereby ensuring that the fuel cell system 6 is always at a suitable working temperature and can work stably. The gas and water generated during the operation of the fuel cell system 6 will be discharged through the tail exhaust pipe 14 of the power generation device.

Claims

1. A stationary fuel cell power generation device, characterized in that: The power generation device comprises a container body (1), the interior of the container body (1) being divided into three parts, a non-hydrogen-related area, a first hydrogen-related area and a second hydrogen-related area, by a metal plate. The non-hydrogen-related area is provided with a PCS energy storage converter (2), a lithium battery cabinet (3) and an electric control cabinet (4), wherein the lithium battery cabinet (3) is provided with a plurality of lithium batteries (5). The first hydrogen-related area is provided with n fuel cell systems (6), where n is a natural number. A plate heat exchanger (7) is provided below each fuel cell system (6). The container body (1) above the first hydrogen-related area is provided with n fuel cell cooling systems (8), and the n fuel cell cooling systems (8) correspond one to one to the n fuel cell systems (6). The top of the container body (1) is also provided with an air intake pipeline (9), the outlet of the air intake pipeline (9) is connected to the inlet of an air filter (10), and the outlet of the air filter (10) is connected to the air inlet of all the fuel cell systems (6) through pipelines. The fuel cell cooling system (8) is connected to a corresponding fuel cell system (6) via a heat exchange pipeline (10), a water pump (11) is provided on the heat exchange pipeline (10), and the fuel cell cooling system (8) includes a water tank (12). A hydrogen input pipeline (13) is provided in the second hydrogen-related area, the inlet end of the hydrogen input pipeline (13) is located outside the container body (1), and the outlet end of the hydrogen input pipeline (13) is respectively connected to the hydrogen inlets of the n fuel cell systems (6) through a plurality of pipelines. A power generation device tail exhaust pipeline (14) is also provided in the second hydrogen-related area, the outlet end of the power generation device tail exhaust pipeline (14) is located outside the container body (1), and the inlet end of the power generation device tail exhaust pipeline (14) is respectively connected to the fuel cell tail exhaust pipelines of the n fuel cell systems (6) through a plurality of pipelines. The heat exchange pipelines of the n plate heat exchangers (7) are all connected to the combined heat and power heating interface (15), and the combined heat and power heating interface (15) is also connected to the outside of the container body (1).

2. The stationary fuel cell power generation device according to claim 1, characterized in that: The container body (1) is a standard container of 6 meters or 12 meters, and has a protection level of D.

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