A proton exchange membrane battery system with cathode flow channel design

Abstract

The present invention provides a proton exchange membrane battery system with a cathode flow channel design, comprising a battery body, a controller and a driver, wherein the controller and the driver are installed above the battery body; the battery body comprises a fixed clamp, a battery stack, a hydrogen interface, a cathode product outlet and a control platform, wherein a plurality of fixed clamps are used and the fixed clamps are arranged on both sides of the battery stack; the control platform is installed at the upper end of the fixed clamp, and the control platform is located on the upper side of the battery stack; the hydrogen interface is installed on the front side above the control platform, and the hydrogen interface is connected to the anode of the battery stack; in the present invention, a groove structure is arranged inside the battery stack, so that the airflow flowing through the flow channel generates vortices inside the flow channel, and since the density of colder air and water vapor is relatively large, the colder air and water vapor flow near the cathode, while the air with higher temperature stays away from the cathode due to its smaller density, thereby achieving temperature suppression and water management of the cathode.

Description

Technical Field

[0001] The invention belongs to the technical field of proton exchange membrane batteries, and in particular relates to a proton exchange membrane battery system with a cathode flow channel design. Background Art

[0002] As the industrialization process continues to accelerate, non-renewable energy is becoming increasingly depleted. In addition, global climate change and environmental pollution are becoming increasingly serious. Countries around the world are in urgent need of finding clean and efficient alternative energy sources. In this context, hydrogen energy as a clean energy has attracted widespread attention, and proton exchange membrane fuel cells have become one of the important ways to utilize hydrogen energy due to their high efficiency and environmental protection. Proton exchange membrane fuel cells have broad application prospects in the fields of transportation, portable power and fixed power.

[0003] The performance and efficiency of proton exchange membrane fuel cells depend largely on the design and optimization of their internal structure. In particular, the design of the cathode flow channel is crucial to improving battery performance. The cathode flow channel is not only responsible for providing the oxygen required for the reaction, but also needs to effectively discharge the generated water to avoid flooding, thereby ensuring the continued electrode reaction and the long-term stable operation of the battery. Researchers are constantly exploring better flow channel designs to improve the overall performance of the battery. In this process, the combination of numerical simulation and experimental research has been widely adopted, promoting the rapid development of flow channel design technology.

[0004] The continuous innovation and optimization of cathode flow channel design is an important direction to promote the technological progress of proton exchange membrane fuel cells. With the development of materials science, computational fluid dynamics and manufacturing technology, the cathode flow channel design of future proton exchange membrane fuel cells will be more efficient and stable, which will help the development of the hydrogen energy industry and provide a solid technical guarantee for the realization of a sustainable energy system.

[0005] In the prior art, the cathode flow channel design of the traditional proton exchange membrane fuel cell has problems such as uneven oxygen distribution and difficult water management, which leads to unstable battery performance and reduced efficiency.

[0006] Therefore, it is very necessary to invent a proton exchange membrane battery system with a cathode flow channel design. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a proton exchange membrane battery system with a cathode flow channel design to solve the problems of uneven oxygen distribution and difficult water management in the cathode flow channel design of traditional proton exchange membrane fuel cells, which lead to unstable battery performance and reduced efficiency. A proton exchange membrane battery system with a cathode flow channel design includes a battery body, a controller and a driver, wherein the controller and the driver are installed above the battery body;

[0008] The battery body includes a fixed clamp, a battery stack, a hydrogen interface, a cathode product outlet and a control platform. The fixed clamp is multiple and is arranged on both sides of the battery stack; the control platform is installed at the upper end of the fixed clamp, and the control platform is located on the upper side of the battery stack; the hydrogen interface is installed on the front side above the control platform, and the hydrogen interface is connected to the anode of the battery stack; the cathode product outlet is opened below the rear side of the fixed clamp, and the cathode product outlet is connected to the cathode of the battery stack;

[0009] The proton exchange membrane battery system with cathode flow channel design also includes a temperature probe, a blower, a humidity sensor and a groove structure. The temperature probe is embedded in the interior of the battery stack; the humidity sensor is installed on the inner side of the cathode product outlet; the blower is connected to one side of the fixed clamp, and the air outlet end of the blower is connected to the cathode of the battery stack; the groove structure is used in plurality, and the groove structure is arranged inside the battery stack.

[0010] Furthermore, the groove structure includes a shell, a flow channel and an eddy current groove, wherein the shell is provided in a plurality and arranged inside the battery stack; the flow channel is provided inside the shell; the eddy current groove is provided in a plurality and arranged inside the shell, and the eddy current groove is located at the lower side of the flow channel;

[0011] By adopting the above technical solution, a groove structure is set inside the battery stack, so that the air flow flowing through the flow channel generates vortices inside the flow channel. Since the density of colder air and water vapor is relatively large, the colder air and water vapor flow near the cathode, while the hotter air stays away from the cathode due to its smaller density, thereby achieving temperature suppression and water management of the cathode.

[0012] Furthermore, a channel for the circulation of an oxidant is provided inside the fixed splint, and the channel of the fixed splint is connected to the cathode area of ​​the fuel cell stack, and the channel of the fixed splint is connected to the air outlet end of the blower; the controller and the driver are respectively connected to the mains through wires, and the controller is connected to the driver through wires, and the controller adopts a fuzzy PID algorithm.

[0013] Furthermore, the size of the control platform matches the size of the fixed clamp, and the control platform adopts a rectangular parallelepiped structure; the fixed clamp is symmetrically arranged, and the fixed clamp adopts a rectangular parallelepiped structure; the temperature probe is connected to the controller through a wire, and the temperature probe is used to detect the temperature inside the battery stack; the blower is connected to the controller and the driver through wires respectively; the humidity sensor is connected to the controller and the driver through wires respectively, and the humidity sensor is used to detect the humidity of the battery stack;

[0014] By adopting the above technical scheme, a temperature probe is set inside the fuel cell stack to detect the temperature inside the fuel cell stack, and cooperates with the controller to accurately calculate the heat dissipation required by the fuel cell stack. The controller adopts a fuzzy PID algorithm and sets corresponding fuzzy rules based on experience. The speed of the cooling fan and the air supply of the blower are calculated according to the temperature of the fuel cell stack, the external ambient temperature and the humidity of the fuel cell stack, thereby improving the robustness of the system and ensuring the smooth and efficient operation of the system. A humidity sensor is set inside the cathode product outlet to detect the humidity of the fuel cell stack to prevent membrane dehydration caused by too low humidity and flooding caused by too low humidity, thereby ensuring the stability of the fuel cell stack and improving the service life of the proton exchange membrane battery.

[0015] Furthermore, the shell is evenly arranged inside the battery stack; the flow channel runs through the front and rear sides of the shell; the vortex grooves are arranged at equal intervals, and the vortex grooves are used to cause the airflow flowing through the flow channel to generate vortices inside the flow channel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, a groove structure is provided inside the battery stack so that the airflow flowing through the flow channel generates eddies inside the flow channel. Since the density of colder air and water vapor is relatively large, the colder air and water vapor flow near the cathode, while the air with higher temperature moves away from the cathode due to its lower density, thereby achieving temperature suppression and water management of the cathode;

[0018] 2. In the present invention, a temperature probe is arranged inside the battery stack, and the temperature probe is used to detect the temperature inside the battery stack, and cooperate with the controller to accurately calculate the heat dissipation required by the battery stack. The controller adopts a fuzzy PID algorithm, sets corresponding fuzzy rules based on experience, and calculates the speed of the cooling fan and the air supply of the blower according to the temperature of the battery stack, the external ambient temperature and the humidity of the battery stack, thereby improving the robustness of the system and ensuring the smooth and efficient operation of the system;

[0019] 3. In the present invention, a humidity sensor is arranged inside the cathode product outlet to detect the humidity of the battery stack, thereby preventing membrane dehydration and flooding caused by too low humidity, ensuring the stability of the battery stack and improving the service life of the proton exchange membrane battery; BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the groove structure of the present invention.

[0023] Figure 4 It is a partial cross-sectional view of the groove structure of the present invention.

[0024] Figure 5 It is a schematic diagram of a simulated diagram of airflow in the flow channel at the cathode end of the present invention.

[0025] In the figure:

[0026] 1. Battery body; 2. Fixing splint; 3. Battery stack; 4. Temperature probe; 5. Blower; 6. Hydrogen interface; 7. Cathode product outlet; 8. Humidity sensor; 9. Control platform; 10. Controller; 11. Driver; 12. Groove structure; 121. Shell; 122. Flow channel; 123. Eddy current groove. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings:

[0028] Example:

[0029] As attached Figure 1 To Attachment Figure 5 Shown

[0030] The present invention provides a proton exchange membrane battery system with a cathode flow channel design, comprising a battery body 1, a controller 10 and a driver 11, wherein the controller 10 and the driver 11 are mounted above the battery body 1; the battery body 1 comprises a fixed clamping plate 2, a battery stack 3, a hydrogen interface 6, a cathode product outlet 7 and a control platform 9, wherein a plurality of fixed clamping plates 2 are used, and the fixed clamping plates 2 are arranged on both sides of the battery stack 3; the control platform 9 is mounted on the upper end of the fixed clamping plate 2, and the control platform 9 is located on the upper side of the battery stack 3; the hydrogen interface 6 is mounted on the front side above the control platform 9, and the hydrogen interface 6 is connected to the anode of the battery stack 3; the cathode product outlet 7 is opened below the rear side of the fixed clamping plate 2, and the cathode product outlet 7 is connected to the cathode of the battery stack 3; A novel groove structure 12 is adopted in the part, and the gas blown in by the blower 5 flows through the flow channel 122, and a vortex is generated in the vortex groove 123 below the flow channel 122. The air and water vapor with lower temperature are subjected to greater centrifugal force due to their higher density, and thus flow on the surface of the cathode; while the air and water vapor with higher temperature are far away from the cathode due to their lower density, thereby achieving temperature suppression of the membrane electrode; the temperature probe 4 is embedded in the interior of the fuel cell stack 3, obtains the temperature inside the fuel cell stack 3, and sends the temperature to the controller 10. After decoding and obtaining the temperature value, the controller 10 controls the driver 11 to drive the blower 5 and the cooling fan to work according to the set optimal temperature, thereby achieving temperature control and water management of the proton exchange membrane fuel cell.

[0031] In this embodiment, the proton exchange membrane battery system with cathode flow channel design also includes a temperature probe 4, a blower 5, a humidity sensor 8 and a groove structure 12, wherein the temperature probe 4 is embedded in the interior of the battery stack 3; the humidity sensor 8 is installed on the inner side of the cathode product outlet 7; the blower 5 is connected to one side of the fixed clamp 2, and the air outlet end of the blower 5 is connected to the cathode of the battery stack 3; a plurality of groove structures 12 are used, and the groove structures 12 are arranged inside the battery stack 3; a humidity sensor 8 is arranged inside the cathode product outlet 7, and the humidity sensor 8 detects the humidity of the battery stack 3 to prevent membrane dehydration caused by too low humidity and flooding caused by too low humidity, thereby ensuring the stability of the battery stack 3 and improving the service life of the proton exchange membrane battery.

[0032] In this embodiment, the groove structure 12 includes a shell 121, a flow channel 122 and a vortex groove 123. The shell 121 is provided in multiple numbers and is arranged inside the battery stack 3. The flow channel 122 is provided inside the shell 121. The vortex groove 123 is provided in multiple numbers and is provided on the inner side of the shell 121. The vortex groove 123 is located on the lower side of the flow channel 122. The shell 121 is evenly arranged inside the battery stack 3. The flow channel 122 runs through the front and rear sides of the shell 121. The vortex grooves 123 are arranged at equal intervals and are used to cause the airflow flowing through the flow channel 122 to generate vortices inside the flow channel 122.

[0033] In this embodiment, a channel for the circulation of an oxidant is provided inside the fixed splint 2, and the channel of the fixed splint 2 is connected to the cathode region of the fuel cell stack 3, and the channel of the fixed splint 2 is connected to the air outlet end of the blower 5; the controller 10 and the driver 11 are respectively connected to the mains through wires, and the controller 10 is connected to the driver 11 through wires, and the controller 10 adopts a fuzzy PID algorithm; the size of the control platform 9 matches the size of the fixed splint 2, and the control platform 9 adopts a rectangular structure; the fixed splint 2 is symmetrically arranged, and the fixed splint 2 adopts a rectangular structure.

[0034] In this embodiment, the temperature probe 4 is connected to the controller 10 through a wire, and the temperature probe 4 is used to detect the temperature inside the battery stack 3; the blower 5 is connected to the controller 10 and the driver 11 respectively through wires; the humidity sensor 8 is connected to the controller 10 and the driver 11 respectively through wires, and the humidity sensor 8 is used to detect the humidity of the battery stack 3; a temperature probe 4 is arranged inside the battery stack 3, and the temperature probe 4 is used to detect the temperature inside the battery stack 3, and cooperate with the controller 10 to accurately calculate the heat dissipation required by the battery stack 3. The controller 10 adopts a fuzzy PID algorithm, sets corresponding fuzzy rules based on experience, and calculates the speed of the cooling fan and the air supply of the blower 5 according to the temperature of the battery stack 3, the external ambient temperature and the humidity of the battery stack, thereby improving the robustness of the system and ensuring smooth and efficient operation of the system.

[0035] How it works

[0036] The present invention adopts a novel groove structure 12 design inside the fuel cell stack 3. The gas blown in by the blower 5 flows through the flow channel 122, and a vortex is generated in the vortex groove 123 below the flow channel 122. The air and water vapor with lower temperature are subjected to greater centrifugal force due to their higher density, and thus flow along the cathode surface; while the air and water vapor with higher temperature are far away from the cathode due to their lower density, thereby achieving temperature suppression of the membrane electrode; the temperature probe 4 is embedded in the fuel cell stack 3 to obtain the temperature inside the fuel cell stack 3 and send the temperature to the controller 10. After decoding and obtaining the temperature value, the controller 10 controls the driver 11 to drive the blower 5 and the cooling fan to work according to the set optimal temperature, thereby achieving temperature control and water management of the proton exchange membrane fuel cell;

[0037] A temperature probe 4 is provided inside the battery stack 3. The temperature probe 4 is used to detect the temperature inside the battery stack 3 and cooperate with the controller 10 to accurately calculate the heat dissipation required by the battery stack 3. The controller 10 adopts a fuzzy PID algorithm and sets corresponding fuzzy rules based on experience. The controller 10 calculates the speed of the cooling fan and the air supply of the blower 5 according to the temperature of the battery stack 3, the external ambient temperature and the humidity of the battery stack, thereby improving the robustness of the system and ensuring the smooth and efficient operation of the system.

[0038] A humidity sensor 8 is provided inside the cathode product outlet 7 to detect the humidity of the battery stack 3 to prevent membrane dehydration and flooding due to too low humidity, thereby ensuring the stability of the battery stack 3 and improving the service life of the proton exchange membrane battery.

[0039] Utilizing the technical solution of the present invention, or those skilled in the art designing similar technical solutions inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A proton exchange membrane battery system with a cathode flow channel design, characterized in that: It comprises a battery body (1), a controller (10) and a driver (11), wherein the controller (10) and the driver (11) are installed above the battery body (1); The battery body (1) comprises a fixed clamp (2), a battery stack (3), a hydrogen interface (6), a cathode product outlet (7) and a control platform (9); the fixed clamp (2) is provided in plurality, and the fixed clamp (2) is arranged on both sides of the battery stack (3); the control platform (9) is installed at the upper end of the fixed clamp (2), and the control platform (9) is located on the upper side of the battery stack (3); the hydrogen interface (6) is installed on the front side above the control platform (9), and the hydrogen interface (6) is connected to the anode of the battery stack (3); the cathode product outlet (7) is provided below the rear side of the fixed clamp (2), and the cathode product outlet (7) is connected to the cathode of the battery stack (3); It also comprises a temperature probe (4), a blower (5), a humidity sensor (8) and a groove structure (12), wherein the temperature probe (4) is embedded in the interior of the fuel cell stack (3); the humidity sensor (8) is installed on the inner side of the cathode product outlet (7); the blower (5) is connected to one side of the fixed clamping plate (2), and the air outlet end of the blower (5) is connected to the cathode of the fuel cell stack (3); a plurality of groove structures (12) are used, and the groove structures (12) are arranged in the interior of the fuel cell stack (3); The groove structure (12) comprises a shell (121), a flow channel (122) and an eddy current groove (123); the shell (121) is provided in plurality and is arranged inside the battery stack (3); the flow channel (122) is provided inside the shell (121); the eddy current groove (123) is provided in plurality and is provided on the inner side of the shell (121); the eddy current groove (123) is located on the lower side of the flow channel (122); The shell (121) is evenly arranged inside the battery stack (3); the flow channel (122) runs through the front and rear sides of the shell (121); The vortex grooves (123) are arranged at equal intervals, and the vortex grooves (123) are used to cause the airflow flowing through the flow channel (122) to generate vortices inside the flow channel (122).

2. The proton exchange membrane battery system with cathode flow channel design as claimed in claim 1, characterized in that: The interior of the fixed clamping plate (2) is provided with a channel for the circulation of an oxidant, and the channel of the fixed clamping plate (2) is connected to the cathode region of the battery stack (3), and the channel of the fixed clamping plate (2) is connected to the air outlet end of the blower (5).

3. The proton exchange membrane battery system with cathode flow channel design as claimed in claim 1, characterized in that: The controller (10) and the driver (11) are respectively connected to the mains via wires, and the controller (10) is connected to the driver (11) via wires. The controller (10) adopts a fuzzy PID algorithm.

4. The proton exchange membrane battery system with cathode flow channel design as claimed in claim 1, characterized in that: The size of the control platform (9) matches the size of the fixed clamping plate (2), and the control platform (9) adopts a rectangular parallelepiped structure; the fixed clamping plate (2) is symmetrically arranged, and the fixed clamping plate (2) adopts a rectangular parallelepiped structure.

5. The proton exchange membrane battery system with cathode flow channel design as claimed in claim 1, characterized in that: The temperature probe (4) is connected to the controller (10) via a wire, and the temperature probe (4) is used to detect the temperature inside the battery stack (3).

6. The proton exchange membrane battery system with cathode flow channel design as claimed in claim 1, characterized in that: The blower (5) is connected to the controller (10) and the driver (11) respectively via wires.

7. The proton exchange membrane battery system with cathode flow channel design as claimed in claim 1, characterized in that: The humidity sensor (8) is connected to the controller (10) and the driver (11) respectively through wires, and the humidity sensor (8) is used to detect the humidity of the battery stack (3).

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