Fuel cell system with atomizing and humidifying device
By employing the siphon spray principle and the mechanical structure of a piston air pump, humidification is achieved by utilizing the water in the steam-water separator, thus solving the problems of high cost and large pressure drop of humidifiers in existing fuel cell systems, and realizing a low-cost and high-efficiency humidification effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-07
AI Technical Summary
Existing fuel cell systems suffer from high humidifier costs, limited pressure differential, short lifespan, and large pressure drop, resulting in low system efficiency.
It adopts the siphon spray principle and piston air pump to achieve humidification through mechanical structure, reducing costs and avoiding additional pressure drop. It uses an atomizing humidification device to use the water in the air-water separator for humidification.
This reduces the overall cost and auxiliary energy consumption of fuel cell systems and improves system efficiency.
Smart Images
Figure CN224096698U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to fuel cell, relates to a kind of fuel cell system with atomization humidification device. BACKGROUND
[0002] Humidifier mainly plays the role of humidifying proton exchange membrane in fuel cell system, and proton exchange membrane (such as Nafion membrane) needs to be in wet state to effectively conduct proton (H+), so as to improve proton conduction efficiency and improve output voltage.
[0003] The existing fuel cell humidifier adopts membrane tube type, dry air is cooled by intercooler, then enters humidifier, is humidified by wet air from electric pile, and then enters electric pile to participate in reaction. After humidifying dry air, the wet air from the pile still contains a lot of moisture, which needs to be separated by steam-water separator to further separate water, so as to be used for turbine recovery air compressor, to avoid water droplets colliding with air compressor impeller, causing impeller damage.
[0004] Since the humidifier of the air path of the existing fuel cell system adopts membrane tube type, the cost is relatively high; the pressure difference between the wet air end and the dry air end is limited, and the service life is relatively short; the pressure drop of the humidifier itself is large, which needs to consume the power consumption of air compressor, thereby reducing the efficiency of the whole fuel cell system. UTILITY MODEL CONTENTS
[0005] The utility model overcomes the above-mentioned defects, and provides a kind of fuel cell system with atomization humidification device. The system does not bring additional pressure drop to fuel cell system, thereby reducing system auxiliary consumption and improving system efficiency.
[0006] The utility model technical scheme is as follows.
[0007] The utility model adopts siphon spray principle, and piston air pump is added in the middle, so that humidification effect can be realized by simple mechanical structure, and the overall cost is reduced. In addition, this way does not bring large pressure drop to fuel cell system, thereby reducing system auxiliary consumption and improving system efficiency. Operating conditions are not limited by the pressure difference between two ends.
[0008] A kind of fuel cell system with atomization humidification device, including turbine recovery air compressor, intercooler, atomization humidification device, electric pile and steam-water separator;The turbine recovery air compressor, intercooler, atomization humidification device and the air inlet of electric pile are sequentially connected;The wet air outlet of the electric pile is sequentially connected with steam-water separator and turbine recovery air compressor;The atomization humidification device is connected with steam-water separator, to realize the purpose of atomization humidification of water in steam-water separator to the air in the atomization humidification device.
[0009] Furthermore, the atomizing humidification device consists of a main pipeline, branch pipelines, an air pump, and a spray head; the two ends of the main pipeline are connected to an intercooler and an electric stack, respectively, and a branch pipeline is provided on the main pipeline, with the air pump and spray head connected to the branch pipeline.
[0010] Furthermore, the cooling water inlet of the spray head is connected to a steam-water separator.
[0011] Furthermore, the spray head is provided with a venturi tube channel inside, which is connected to the cooling water inlet.
[0012] Furthermore, the outlet of the spray head is connected to the main pipeline.
[0013] Furthermore, the air outlet of the turbine recovery air compressor is connected to the outside via an air tailpipe.
[0014] Furthermore, the inlet of the turbine air compressor is connected to an external air source.
[0015] Furthermore, a throttle valve is installed on the pipe between the atomizing humidification device and the fuel cell stack.
[0016] Furthermore, temperature sensors and humidity sensors are respectively installed on the pipes at the inlet and outlet of the fuel cell stack.
[0017] Compared with the prior art, the advantages of this utility model are:
[0018] 1. It is basically composed of mechanical structures, and the overall cost is relatively low.
[0019] 2. It will not cause additional pressure drop to the fuel cell system, thereby reducing system auxiliary consumption and improving system efficiency. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the humidification device;
[0021] Figure 2 This is a schematic diagram of the spray head structure;
[0022] Figure 3 A schematic diagram of the overall structure of a fuel cell stack with an atomizing humidification device.
[0023] 1. Turbine recovery air compressor; 2. Intercooler; 3. Atomizing humidifier; 4. Fuel cell stack; 5. Steam-water separator; 6. Throttle valve; 7. Air exhaust pipe. Detailed Implementation
[0024] like Figure 3 As shown, a fuel cell system with an atomizing humidification device in this embodiment includes a turbine regenerative air compressor 1, an intercooler 2, an atomizing humidification device 3, a fuel cell stack 4, a steam-water separator 5, and a throttle valve 6;Figure 1 As shown, in this example, the atomizing humidification device 3 consists of a main pipeline, branch pipelines, an air pump 3.1, and a spray head 3.2. The two ends of the main pipeline are connected to the intercooler 2 and the fuel cell stack 4, respectively. Branch pipelines are installed on the main pipeline, and the air pump 3.1 and the spray head 3.2 are connected to the branch pipelines. The outlet of the spray head 3.2 is connected to the main pipeline. Figure 2 As shown, in this embodiment, the spray head 3.2 is provided with a venturi tube channel 3.3 inside, and the venturi tube channel 3.3 is connected to the cooling water inlet.
[0025] like Figure 3 As shown, in this embodiment, the turbine recovery air compressor 1, intercooler 2, atomizing humidification device 3, and the air inlet of the fuel cell stack 4 are connected sequentially. The humidified air outlet of the fuel cell stack 4 is connected sequentially to the steam-water separator 5 and the turbine recovery air compressor 1. Specifically, the two ends of the main pipeline of the atomizing humidification device 3 are connected to the intercooler 2 and the fuel cell stack 4, respectively. The atomizing humidification device 3 is connected to the steam-water separator 5 to atomize and humidify the air inside the atomizing humidification device 3 by supplying water from the steam-water separator 5. The cooling water inlet of the spray head 3.2 is connected to the steam-water separator 5. In this embodiment, the air outlet of the turbine recovery air compressor 1 is connected to the outside through an air exhaust pipe, and the inlet is connected to an external air source.
[0026] In this embodiment, a throttle valve 6 is installed on the pipe between the atomizing humidification device 3 and the fuel cell stack 4. Temperature sensors and humidity sensors are respectively installed on the pipes at the inlet and outlet of the fuel cell stack 4.
[0027] like Figure 1 As shown, in the main pipeline, dry air enters from the outside, most of it travels forward, and a small portion is drawn by the air pump into the branch pipeline and then into the atomizing spray head; as... Figure 2 As shown, the spray head has a venturi tube channel inside. When dry air flows through at high speed, it will generate a siphon effect, drawing in the coolant from the outside and mixing it together. Finally, it passes through the spray nozzle at the tail of the spray head to form a humidified spray, which humidifies the incoming dry air and achieves the humidification effect.
[0028] The above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A fuel cell system with an atomizing humidification device, characterized in that, The device includes a turbine recovery air compressor (1), an intercooler (2), an atomizing humidifier (3), an electric stack (4), and a steam-water separator (5). The turbine recovery air compressor (1), the intercooler (2), the atomizing humidifier (3), and the air inlet of the electric stack (4) are connected in sequence. The humidified air outlet of the electric stack (4) is connected in sequence to the steam-water separator (5) and the turbine recovery air compressor (1). The atomizing humidifier (3) is connected to the steam-water separator (5) to achieve the purpose of atomizing and humidifying the air inside the atomizing humidifier (3) by supplying the water in the steam-water separator (5).
2. The fuel cell system with an atomizing humidification device as described in claim 1, characterized in that, The atomizing humidification device (3) consists of a main pipeline, branch pipelines, an air pump (3.1) and a spray head (3.2); the two ends of the main pipeline are connected to the intercooler (2) and the fuel cell stack (4) respectively, and a branch pipeline is provided on the main pipeline, with the air pump (3.1) and the spray head (3.2) connected on the branch pipeline.
3. The fuel cell system with an atomizing humidification device as described in claim 2, characterized in that, The cooling water inlet of the spray head (3.2) is connected to the steam-water separator (5).
4. The fuel cell system with an atomizing humidification device as described in claim 2, characterized in that, The spray head (3.2) is provided with a venturi tube channel (3.3) inside, which is connected to the cooling water inlet.
5. The fuel cell system with an atomizing humidification device as described in claim 2, characterized in that, The outlet of the spray head (3.2) is connected to the main pipeline.
6. The fuel cell system with an atomizing humidification device as described in claim 1, characterized in that, The air outlet of the turbine recovery air compressor (1) is connected to the outside through an air tailpipe.
7. The fuel cell system with an atomizing humidification device as described in claim 1, characterized in that, The inlet of the turbine recovery air compressor (1) is connected to an external air source.
8. The fuel cell system with atomizing humidification device as described in claim 1, characterized in that, A throttle valve (6) is installed on the pipe between the atomizing humidification device (3) and the fuel cell stack (4).
9. The fuel cell system with an atomizing humidification device as described in claim 1, characterized in that, Temperature sensors and humidity sensors are respectively installed on the pipes at the inlet and outlet of the fuel cell stack (4).