Fuel cell polar plate
By setting up a reaction channel group and a cooling channel group at intervals on the two surfaces of the fuel cell plates, and setting up a sealing groove between the two, the existing fuel cell plate process is solved and the problem of complex and difficult to meet the needs of batch production is achieved, and efficient and stable fuel cell reactions and good heat dissipation performance are achieved.
Patent Information
- Application Number
- CN202421123671.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The existing fuel cell plates have complex processes and long processing cycles, making it difficult to meet the needs of batch production.
Using a single fuel cell plate design, fluid isolation is achieved by setting a fuel cell reaction flow channel group and a cooling flow channel group at intervals on the two surfaces of the plate, and a sealing groove is set between the reaction flow channel group and the cooling flow channel group.
It reduces production costs and process control difficulty, and improves the reaction efficiency, reaction stability and heat dissipation performance of fuel cell plates.
Smart Images
Figure CN222619779U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fuel cells, in particular to a fuel cell polar plate. Background Art
[0002] The fuel cell plate is the core component of the fuel cell to realize the power generation function. There are independent flow channels on the plate for the reaction medium (such as hydrogen and air) and the cooling medium (such as cooling water) to flow respectively. The reaction medium flow channel is used to provide the fuel cell with reaction gas, and the cooling medium flow channel is used to ensure the constant temperature of the fuel cell plate, so that the reaction can be carried out in the optimal temperature range.
[0003] In the prior art, fuel cell plates are mostly processed by splitting the surface, processing the flow channels of the reaction medium and the cooling medium on two fuel cell plates respectively, and then the two fuel cell plates are bonded together to form a fuel cell bipolar plate. This process has a long processing cycle, complex operation and difficult quality control of the bonding process, which is difficult to meet the mass production needs of fuel cells. Utility Model Content
[0004] The utility model aims to provide a fuel cell polar plate, which uses a single fuel cell polar plate to replace a bipolar plate, thereby reducing production costs and process control difficulty.
[0005] The utility model provides a fuel cell plate, comprising: a plurality of fuel cell cooling channel groups, a plurality of partition walls, a plurality of fuel cell sealing grooves and a plurality of fuel cell reaction channel groups arranged on one surface of the fuel cell plate;
[0006] Any of the fuel cell sealing grooves is arranged between any of the fuel cell cooling channel groups and any of the fuel cell reaction channel groups;
[0007] The fuel cell reaction channel group includes at least one fuel cell reaction channel, and the fuel cell cooling channel group includes at least one fuel cell cooling channel;
[0008] Any one of the fuel cell cooling channels, any one of the fuel cell sealing grooves or any one of the fuel cell reaction channels is disposed between the partition walls.
[0009] Furthermore, the fuel cell reaction channel, the fuel cell cooling channel, and the fuel cell plate sealing groove are all rectangular groove structures.
[0010] Furthermore, the fuel cell reaction channel, the fuel cell cooling channel, the fuel cell plate sealing groove and the partition wall are equal in length.
[0011] Furthermore, the partition wall is a rectangular stepped protrusion structure.
[0012] Furthermore, the cross-sectional area of the fuel cell cooling channel is smaller than the cross-sectional area of the fuel cell reaction channel.
[0013] Furthermore, the cross-sectional area of the fuel cell plate sealing groove is smaller than the cross-sectional area of the fuel cell reaction channel.
[0014] Furthermore, the fuel cell reaction channel group includes three fuel cell reaction channels.
[0015] Furthermore, the plurality of fuel cell cooling channel groups, the plurality of partition walls, the plurality of fuel cell sealing grooves and the plurality of fuel cell reaction channel groups are respectively arranged on two opposite surfaces of the fuel cell plate.
[0016] Furthermore, a fuel cell cooling channel region is provided between two of the fuel cell cooling channel groups that are arranged opposite to each other; a fuel cell sealing region is provided between two of the fuel cell sealing grooves that are arranged opposite to each other; and a fuel cell reaction channel region is provided between two of the fuel cell reaction channel groups that are arranged opposite to each other.
[0017] Furthermore, the reaction gas introduced into the fuel cell plate includes at least one of hydrogen and oxygen.
[0018] Compared with the prior art, the utility model has at least the following technical effects:
[0019] The utility model arranges the fuel cell reaction channel group and the fuel cell cooling channel group on two surfaces of the fuel cell plate at intervals, so that the heat generated by the fuel cell reaction channel group during chemical reaction can be timely absorbed and dissipated by the fuel cell cooling channel, thereby avoiding overheating that affects the reaction efficiency; in addition, the utility model also arranges a fuel cell sealing groove between the fuel cell reaction channel group and the fuel cell cooling channel to prevent the reaction gas and the coolant from mixing and complete the isolation of the fluid, thereby realizing the simultaneous arrangement of the fuel cell cooling channel group and the fuel cell reaction channel group on one plate, reducing the production cost and the difficulty of process control, and making the battery plate have higher reaction efficiency and reaction stability and better heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the structure of a fuel cell plate in one embodiment of the utility model;
[0021] Figure 2 It is another structural schematic diagram of a fuel cell plate in one embodiment of the utility model. DETAILED DESCRIPTION
[0022] The following is a description of a fuel cell plate of the utility model in conjunction with a schematic diagram, which shows a preferred embodiment of the utility model. It should be understood that those skilled in the art can modify the utility model described herein and still achieve the beneficial effects of the utility model. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the utility model.
[0023] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0024] Please refer to Figure 1-Figure 2 This embodiment provides a fuel cell plate, which includes a plurality of fuel cell cooling channel groups, a plurality of partition walls 4, a plurality of fuel cell sealing grooves 2 and a plurality of fuel cell reaction channel groups arranged on one surface of the fuel cell plate.
[0025] Specifically, any of the fuel cell sealing grooves 2 is arranged between any of the fuel cell cooling channel groups and any of the fuel cell reaction channel groups; the fuel cell reaction channel group includes at least one fuel cell reaction channel 3, and the fuel cell cooling channel group includes at least one fuel cell cooling channel 3; a fuel cell cooling channel 3, a fuel cell sealing groove 2 or a fuel cell reaction channel 3 is provided between each of the partition walls 4.
[0026] In this embodiment, the fuel cell reaction channel 3 is used to pass and transfer reaction gases, such as hydrogen and oxygen, in the fuel cell to perform chemical reactions to generate electrical energy. The fuel cell cooling channel 3 is used to transfer cooling fluid, such as cooling water, in the fuel cell to maintain the temperature balance of the fuel cell. The fuel cell sealing groove 2 is arranged between the fuel cell reaction channel group and the fuel cell cooling channel 3 to prevent mixing of the reaction gas and the cooling fluid.
[0027] By arranging the fuel cell reaction channel 3 and the fuel cell cooling channel 3 at intervals on the two surfaces of the fuel cell plate, the heat generated when the fuel cell reaction channel 3 performs a chemical reaction can be promptly absorbed and dissipated by the fuel cell cooling channel 3, thereby avoiding overheating that affects the reaction efficiency; in addition, the utility model also arranges a fuel cell sealing groove 2 between the fuel cell reaction channel 3 and the fuel cell cooling channel 3 to prevent the reaction gas and the coolant from mixing, thereby achieving fluid isolation, thereby reducing the production cost and the difficulty of process control, and enabling the fuel cell plate to have higher reaction efficiency and reaction stability and better heat dissipation performance.
[0028] In this embodiment, the plurality of fuel cell cooling channel groups, the plurality of partition walls 4, the plurality of fuel cell sealing grooves 2 and the plurality of fuel cell reaction channel groups are respectively arranged on two opposite surfaces of the fuel cell plate. A fuel cell cooling channel region 5 is provided between the two opposite fuel cell cooling channel groups; a fuel cell sealing region 6 is provided between the two opposite fuel cell sealing grooves; and a fuel cell reaction channel region 7 is provided between the two opposite fuel cell reaction channel groups.
[0029] In this embodiment, the fuel cell cooling channel region 5 is used to achieve uniform heat dissipation of the plate through the cooling medium. The fuel cell reaction channel region 7 performs a chemical reaction of the fuel cell according to the reaction gas, and the fuel cell sealing groove region 6 is used to achieve isolation between the chemical reaction of the fuel cell and the heat dissipation step of the cooling medium.
[0030] In a specific embodiment, the fuel cell reaction channel 3, the fuel cell cooling channel 3, and the fuel cell plate sealing groove are all rectangular grooves. The partition wall 4 is a rectangular step protrusion. The fuel cell reaction channel 3, the fuel cell cooling channel 3, the fuel cell plate sealing groove and the partition wall 4 are all equal in length, forming a wavy fuel cell plate.
[0031] In another specific embodiment, the cross-sectional area of the fuel cell cooling channel 3 is smaller than the cross-sectional area of the fuel cell reaction channel 3. The reason is that the fuel cell cooling channel 3 is mainly used to transfer the cooling medium, while the fuel cell reaction channel 3 is mainly used to transfer the reaction medium (hydrogen and oxygen). The flow rate requirement of the cooling medium is relatively small, so the cross-sectional area of the cooling channel can be relatively small to save design costs.
[0032] In another specific embodiment, the cross-sectional area of the fuel cell plate sealing groove is smaller than the cross-sectional area of the fuel cell reaction channel 3. The reason is that the sealing groove is mainly used to isolate the fuel cell reaction channel 3 and the cooling channel to prevent leakage of substances between the two. Therefore, its cross-sectional area is designed to be smaller to ensure the sealing effect, which is also conducive to enhancing the structural stability of the fuel cell plate and preventing the fuel cell plate from being deformed due to the excessive width of the sealing groove.
[0033] In another specific embodiment, the fuel cell cooling channel group is provided with at least one fuel cell cooling channel 3, for example, 1, 2 or 3. The number of fuel cell cooling channels 3 can be determined according to the specific design and working requirements of the fuel cell to achieve a better cooling effect.
[0034] In another specific embodiment, the fuel cell reaction channel group is provided with at least one fuel cell reaction channel 3, for example, 3, 4 or 5. The number of the fuel cell reaction channels 3 can be determined according to the specific design and working requirements of the fuel cell to meet the requirements of reaction rate and power generation.
[0035] In this embodiment, a first fuel cell cooling channel group, a first fuel cell sealing groove, a first fuel cell reaction channel group, a second fuel cell sealing groove, a second fuel cell cooling channel group, a third fuel cell sealing groove, a second fuel cell reaction channel group, a fourth fuel cell sealing groove, a third fuel cell cooling channel group, a fifth fuel cell sealing groove, a third fuel cell reaction channel group, a fifth fuel cell sealing groove and a fourth fuel cell cooling channel group are sequentially provided on one surface of the fuel cell plate.
[0036] In addition, on the other surface of the fuel cell plate, the first fuel cell cooling channel group, the first fuel cell sealing groove, the first fuel cell reaction channel group, the second fuel cell sealing groove, the second fuel cell cooling channel group, the third fuel cell sealing groove, the second fuel cell reaction channel group, the fourth fuel cell sealing groove, the third fuel cell cooling channel group, the fifth fuel cell sealing groove, the third fuel cell reaction channel group, the fifth fuel cell sealing groove and the fourth fuel cell cooling channel group are also aligned in sequence.
[0037] In a specific embodiment, the number of fuel cell cooling channels 3 in the second fuel cell cooling channel group and the third fuel cell cooling channel group is 2, and the number of fuel cell cooling channel 3 in the first fuel cell cooling channel group and the fourth fuel cell cooling channel group is 1.
[0038] In another specific embodiment, the number of fuel cell reaction channels 3 in all fuel cell reaction channel groups is 3.
[0039] Furthermore, the specific installation steps of the fuel cell plate provided in this embodiment are as follows:
[0040] The first step is to process fuel cell reaction channels 3 on two opposite surfaces of a single plate to transfer reaction gases for chemical reactions.
[0041] Step 2: Processing fuel cell reaction cooling channels on both sides of the fuel cell reaction channel 3 for circulating coolant to help dissipate heat.
[0042] Step 3: Processing a fuel cell sealing groove 2 between the fuel cell reaction channel 3 and the fuel cell cooling channel 3 to achieve isolation between the reaction gas and the cooling medium.
[0043] Step 4: Process partition walls 4 on both sides of any flow channel or fuel cell sealing groove 2 to enhance structural stability and functional zoning.
[0044] Step 5: Test and adjust the performance parameters of the fuel cell plates to optimize their working performance.
[0045] Step 6: Assemble the processed fuel cell plates and other components into a complete fuel cell system.
[0046] In summary, the utility model arranges the fuel cell reaction channel group and the fuel cell cooling channel group at intervals on the two surfaces of the fuel cell plate, so that the heat generated when the fuel cell reaction channel group performs chemical reactions can be promptly absorbed and dissipated by the fuel cell cooling channel, thereby avoiding overheating that affects the reaction efficiency; in addition, the utility model also arranges a fuel cell sealing groove between the fuel cell reaction channel group and the fuel cell cooling channel to prevent the reaction gas and the coolant from mixing and complete the isolation of the fluid, thereby realizing the simultaneous arrangement of the fuel cell cooling channel group and the fuel cell reaction channel group on one plate, reducing the production cost and the difficulty of process control, and making the battery plate have higher reaction efficiency and reaction stability as well as better heat dissipation performance.
[0047] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A fuel cell plate, characterized in that: include: A plurality of fuel cell cooling channel groups, a plurality of partition walls, a plurality of fuel cell sealing grooves and a plurality of fuel cell reaction channel groups are arranged on one surface of a fuel cell plate; Any of the fuel cell sealing grooves is arranged between any of the fuel cell cooling channel groups and any of the fuel cell reaction channel groups; The fuel cell reaction channel group includes at least one fuel cell reaction channel, and the fuel cell cooling channel group includes at least one fuel cell cooling channel; Any one of the fuel cell cooling channels, any one of the fuel cell sealing grooves or any one of the fuel cell reaction channels is disposed between the partition walls.
2. The fuel cell plate according to claim 1, characterized in that: The fuel cell reaction channel, the fuel cell cooling channel, and the fuel cell sealing groove are all rectangular groove structures.
3. The fuel cell plate according to claim 2, characterized in that: The fuel cell reaction channel, the fuel cell cooling channel, the fuel cell sealing groove and the partition wall have the same length.
4. The fuel cell plate according to claim 3, characterized in that: The partition wall is a rectangular step-protrusion structure.
5. The fuel cell plate according to claim 2, characterized in that: The cross-sectional area of the fuel cell cooling channel is smaller than the cross-sectional area of the fuel cell reaction channel.
6. The fuel cell plate according to claim 2, characterized in that: The cross-sectional area of the fuel cell sealing groove is smaller than the cross-sectional area of the fuel cell reaction channel.
7. The fuel cell plate according to claim 1, characterized in that: The fuel cell reaction channel group includes three fuel cell reaction channels.
8. The fuel cell plate according to claim 1, characterized in that: The plurality of fuel cell cooling channel groups, the plurality of partition walls, the plurality of fuel cell sealing grooves and the plurality of fuel cell reaction channel groups are respectively arranged on two opposite surfaces of the fuel cell plate.
9. The fuel cell plate according to claim 8, characterized in that: A fuel cell cooling channel region is provided between two of the fuel cell cooling channel groups that are arranged opposite to each other; a fuel cell sealing region is provided between two of the fuel cell sealing grooves that are arranged opposite to each other; and a fuel cell reaction channel region is provided between two of the fuel cell reaction channel groups that are arranged opposite to each other.
10. The fuel cell plate according to claim 1, characterized in that: The reaction gas introduced into the fuel cell plate includes at least one of hydrogen and oxygen.