Polar plate for fuel cell and fuel cell

Abstract

The application discloses a fuel cell polar plate and a fuel cell, and relates to the technical field of batteries. The fuel cell polar plate comprises a polar plate body, a cooling medium inlet and a cooling medium outlet arranged along the length direction of the polar plate body, a distribution flow channel located between the cooling medium inlet and a main heat exchange flow channel, and the main heat exchange flow channel located between the cooling medium outlet and the distribution flow channel. A turbulence part is arranged in the distribution flow channel, and the turbulence part comprises a plurality of first turbulence structures. Two adjacent first turbulence structures are spaced apart. The distribution flow channel and the main heat exchange flow channel are formed in the polar plate body, and the turbulence part is arranged in the distribution flow channel, so that the turbulence part can guide and disturb the cooling medium, which is beneficial to improving the uniformity of the distribution of the cooling medium in the polar plate body, thereby improving the temperature consistency of different positions of the fuel cell. Moreover, the disturbed cooling medium can fully flow in the polar plate body, which is beneficial to the sufficient heat exchange of the cooling medium, and further improves the cooling effect of the fuel cell.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a electrode plate for a fuel cell and a fuel cell having the electrode plate. Background Technology

[0002] In related technologies, cooling channels can be arranged on the electrode plates. By allowing the cooling medium to flow within the cooling channels, the cooling medium can carry away the heat from the fuel cell. However, the flow velocity of the cooling medium within the cooling channels is relatively fast, resulting in insufficient heat exchange. Furthermore, the uneven distribution of the cooling medium within the cooling channels leads to poor temperature uniformity at different locations within the fuel cell, thus resulting in poor cooling performance. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a fuel cell electrode plate that improves the temperature uniformity at different locations in the fuel cell, facilitates sufficient heat exchange of the cooling medium, and thus improves the cooling effect of the fuel cell.

[0004] The present invention further proposes a fuel cell.

[0005] According to an embodiment of the present invention, a fuel cell electrode plate includes: an electrode plate body having a cooling medium inlet and a cooling medium outlet, the cooling medium inlet and the cooling medium outlet being arranged along the length direction of the electrode plate body, and a distribution channel and a main heat exchange channel being formed within the electrode plate body, the distribution channel being located between the cooling medium inlet and the main heat exchange channel, the main heat exchange channel being located between the cooling medium outlet and the distribution channel, the distribution channel connecting the cooling medium inlet and the main heat exchange channel, and the main heat exchange channel connecting the cooling medium outlet and the distribution channel; and a turbulence portion disposed in the distribution channel and fixedly connected to the electrode plate body, the turbulence portion including a plurality of first turbulence structures, with adjacent first turbulence structures spaced apart.

[0006] According to an embodiment of the present invention, the electrode plate of the fuel cell has a distribution channel and a main heat exchange channel formed in the electrode plate body, and the turbulence part is provided in the distribution channel. The turbulence part can guide and turbulent the cooling medium, which is beneficial to improving the uniformity of the distribution of the cooling medium in the electrode plate body, thereby improving the temperature consistency at different locations of the fuel cell. Furthermore, the turbulent cooling medium can flow fully in the electrode plate body, which is beneficial to the full heat exchange of the cooling medium, thereby improving the cooling effect of the fuel cell.

[0007] In some embodiments of the present invention, multiple first turbulence structures form multiple rows of turbulence structures, which are arranged along the width direction of the electrode body. Any two adjacent rows of turbulence structures are spaced apart, and each row of turbulence structures includes multiple first turbulence structures, which are arranged along the length direction of the electrode body.

[0008] In some embodiments of the present invention, the spacing between at least two adjacent first turbulence structures is different from the spacing between any other two adjacent first turbulence structures.

[0009] In some embodiments of the present invention, the spacing between multiple first turbulence structures in each row of turbulence structures gradually increases from the direction of the cooling medium inlet to the main heat exchange channel.

[0010] In some embodiments of the present invention, the spacing between at least two adjacent rows of turbulence structures gradually increases from the cooling medium inlet to the main heat exchange channel.

[0011] In some embodiments of the present invention, each row of turbulence structures has a median line extending along the length direction of the electrode body, and a plurality of first turbulence structures in each row of turbulence structures are symmetrical about the corresponding median line. The median line of each row of turbulence structures forms an angle with the radial direction of the cooling medium inlet, and the median lines of at least two rows of turbulence structures form different angles with the radial direction of the cooling medium inlet.

[0012] In some embodiments of the present invention, the first turbulence structure includes: a first main body and a second main body connected together. From the cooling medium inlet to the main heat exchange channel, the second main body is located on the side of the first main body away from the cooling medium inlet. The length of the connection between the first main body and the second main body is D1. Along the arrangement direction of the first main body and the second main body, the height of the first main body is L, satisfying the relationship: 1.2≤L / D1≤2.5.

[0013] In some embodiments of the present invention, there are multiple main heat exchange channels, which are arranged along the width direction of the electrode body. At least one main heat exchange channel is provided with a second turbulence structure, which is fixed to the electrode body.

[0014] In some embodiments of the present invention, the electrode body has a cooling medium flow space, and the cooling medium flow space is provided with a plurality of partition walls. The partition walls extend along the length direction of the electrode body, and the plurality of partition walls are spaced apart sequentially along the width direction of the electrode body to divide the cooling medium flow space into a plurality of main heat exchange channels.

[0015] In some embodiments of the present invention, a converging flow channel is also formed within the electrode plate body. The converging flow channel is located between the cooling medium outlet and the main heat exchange flow channel, and a turbulence section is provided within the converging flow channel.

[0016] The fuel cell according to an embodiment of the present invention includes the electrode plates of the fuel cell described above.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of the electrode plate according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Enlarged view of point A.

[0021] Figure label:

[0022] Plate 100;

[0023] Electrode body 1;

[0024] Cooling medium inlet 11; Cooling medium outlet 12; Distribution channel 13;

[0025] Main heat exchange channel 14; Second turbulence structure 141;

[0026] Cooling medium flow space 15; partition wall 151;

[0027] Converging channel 16;

[0028] spoiler 2;

[0029] First turbulence structure 21; First main body 211; Second main body 212;

[0030] 22 rows of turbulence structures;

[0031] 3. Air inlet; 4. Air outlet; 5. Hydrogen inlet; 6. Hydrogen outlet. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The following is for reference. Figures 1-2The electrode plate 100 of a fuel cell according to an embodiment of the present invention is described. The electrode plate 100 may include an air inlet 3, an air outlet 4, a hydrogen inlet 5, and a hydrogen outlet 6. Hydrogen and air enter the fuel cell through the hydrogen inlet 5 and the air inlet 3, respectively, to carry out redox reactions, so that the fuel cell converts chemical energy into electrical energy through electrochemical reactions.

[0034] like Figure 1 As shown, the electrode plate 100 of the fuel cell according to an embodiment of the present invention includes: an electrode plate body 1, the electrode plate body 1 having a cooling medium inlet 11 and a cooling medium outlet 12, the cooling medium inlet 11 and the cooling medium outlet 12 being arranged along the length direction of the electrode plate body 1, and a distribution channel 13 and a main heat exchange channel 14 being formed within the electrode plate body 1, the distribution channel 13 being located between the cooling medium inlet 11 and the main heat exchange channel 14, the main heat exchange channel 14 being located between the cooling medium outlet 12 and the distribution channel 13, the distribution channel 13 connecting the cooling medium inlet 11 and the main heat exchange channel 14, and the main heat exchange channel 14 connecting the cooling medium outlet 12 and the distribution channel 13; and a turbulence portion 2, the turbulence portion 2 being disposed in the distribution channel 13 and fixedly connected to the electrode plate body 1, the turbulence portion 2 including a plurality of first turbulence structures 21, with adjacent first turbulence structures 21 spaced apart.

[0035] Along the length of the electrode body 1, the electrode body 1 has two opposite ends. The cooling medium inlet 11 is located near one end of the electrode body 1, and the cooling medium outlet 12 is located near the other end of the electrode body 1. The cooling medium can flow into the electrode body 1 from the cooling medium inlet 11 and flow out of the electrode body 1 from the cooling medium outlet 12, so that the cooling medium can exchange heat within the electrode body 1. A distribution channel 13 and a main heat exchange channel 14 are formed within the electrode body 1. The distribution channel 13 and the main heat exchange channel 14 are arranged along the length of the electrode body 1. The distribution channel 13 is located between the cooling medium inlet 11 and the main heat exchange channel 14, and the main heat exchange channel 14 is located between the cooling medium outlet 12 and the distribution channel 13. That is, along the length of the electrode body 1, the cooling medium inlet 11, the distribution channel 13, the main heat exchange channel 14, and the cooling medium outlet 12 are arranged sequentially.

[0036] The distribution channel 13 connects the cooling medium inlet 11 and the main heat exchange channel 14. The main heat exchange channel 14 connects the cooling medium outlet 12 and the distribution channel 13, so that the cooling medium inlet 11, the distribution channel 13, the main heat exchange channel 14 and the cooling medium outlet 12 are all connected. This allows the cooling medium to flow into the distribution channel 13 through the cooling medium inlet 11, and after flowing through the distribution channel 13, it can flow into the main heat exchange channel 14, and then flow out of the electrode body 1 through the cooling medium outlet 12, thereby achieving the effect of smooth flow of the cooling medium within the electrode body 1.

[0037] The flow-dispersing part 2 is disposed within the distribution channel 13. The flow-dispersing part 2 can turbulent and guide the cooling medium within the distribution channel 13, allowing the cooling medium to smoothly pass through the distribution channel 13 and flow into the main heat exchange channel 14. This improves the uniformity of the cooling medium distribution within the distribution channel 13 and the main heat exchange channel 14, thereby enhancing the temperature consistency at different locations in the fuel cell. In some embodiments of this application, the flow-dispersing part 2 and the electrode plate body 1 can be integrally formed, so that the flow-dispersing part 2 and the electrode plate body 1 are fixedly connected, thereby enabling the flow-dispersing part 2 to reliably exert its turbulence-dispersing effect within the distribution channel 13.

[0038] The flow disturbance section 2 includes multiple first flow disturbance structures 21. For example, the flow disturbance section 2 may include two first flow disturbance structures 21, ten first flow disturbance structures 21, or fifty first flow disturbance structures 21. However, this application is not limited to these. The flow disturbance section 2 may include more first flow disturbance structures 21 so that the multiple first flow disturbance structures 21 can be arranged at different positions in the distribution channel 13. By setting multiple first flow disturbance structures 21 to fully disturb and guide the cooling medium, the cooling medium can flow fully in the electrode body 1, which is beneficial to the full heat exchange of the cooling medium in the electrode body 1, thereby improving the cooling effect of the fuel cell.

[0039] The two adjacent first turbulence structures 21 are spaced apart so that a flow channel can be formed between them. This allows the cooling medium to flow through the flow channel between the two adjacent first turbulence structures 21, reducing the risk of multiple first turbulence structures 21 blocking the flow path of the cooling medium. It also reduces the risk of multiple first turbulence structures 21 connecting and causing the cooling medium to become blocked. This facilitates the smooth flow of the cooling medium in the distribution channel 13, reduces the risk of the fuel cell temperature becoming too high due to the blockage of the cooling medium, and helps to keep the temperature of the fuel cell within a suitable operating temperature range, thereby improving the safety of the fuel cell.

[0040] Specifically, along the length of the electrode body 1, the cooling medium inlet 11, the distribution channel 13, the main heat exchange channel 14, and the cooling medium outlet 12 are arranged sequentially and connected. The cooling medium can flow from the cooling medium inlet 11 into the distribution channel 13. The first turbulence structure 21 allows the cooling medium to flow fully within the distribution channel 13. Furthermore, the cooling medium can be uniformly turbulent and guided to the main heat exchange channel 14 through the first turbulence structure 21, so that the cooling medium is evenly distributed at different positions in the main heat exchange channel 14. The cooling medium can cool the electrode 100 in both the distribution channel 13 and the main heat exchange channel 14, thereby reducing the temperature of the fuel cell and helping to maintain the temperature of the fuel cell within a suitable operating temperature range, thus improving the safety of the fuel cell. After the cooling medium has completed heat exchange within the electrode body 1, it can flow out of the electrode body 1 through the cooling medium outlet 12, so that new cooling medium can flow into the electrode body 1 through the cooling medium inlet 11 and exchange heat, thereby achieving a continuous cooling effect on the fuel cell and further improving the safety of the fuel cell.

[0041] Therefore, by forming a distribution channel 13 and a main heat exchange channel 14 within the electrode body 1, and by providing a turbulence-disrupting part 2 within the distribution channel 13, the turbulence-disrupting part 2 can guide and turbulent the cooling medium, which is beneficial to improving the uniformity of the distribution of the cooling medium within the electrode body 1, thereby improving the temperature consistency at different locations of the fuel cell. Furthermore, the turbulent cooling medium can flow fully within the electrode body 1, which is beneficial to the full heat exchange of the cooling medium, thereby improving the cooling effect of the fuel cell.

[0042] In some embodiments of the present invention, such as Figure 1 As shown, multiple first turbulence structures 21 form multiple rows of turbulence structure rows 22, which are arranged along the width direction of the electrode body 1. Any two adjacent rows of turbulence structure rows 22 are spaced apart, and each row of turbulence structure rows 22 includes multiple first turbulence structures 21. The multiple first turbulence structures 21 in each row of turbulence structure rows 22 are arranged along the length direction of the electrode body 1.

[0043] In some embodiments of this application, multiple first disturbance structures 21 form two rows of disturbance structure rows 22. In some embodiments, multiple first disturbance structures 21 form seven rows of disturbance structure rows 22. In some embodiments, multiple first disturbance structures 21 form fifteen rows of disturbance structure rows 22. However, this application is not limited to these embodiments; multiple first disturbance structures 21 can also form more rows of disturbance structure rows 22, as long as multiple first disturbance structures 21 form multiple rows of disturbance structure rows 22.

[0044] As some embodiments of this application, each row of turbulence structure 22 may include five first turbulence structures 21. As some embodiments of this application, each row of turbulence structure 22 may include six first turbulence structures 21. Along the length direction of the electrode body 1, the plurality of first turbulence structures 21 in each row of turbulence structure 22 are arranged sequentially.

[0045] Along the width of the electrode body 1, multiple rows of turbulence structures 22 are arranged sequentially, with any two adjacent rows of turbulence structures 22 spaced apart. This allows the cooling medium to flow through the gaps between any two adjacent rows of turbulence structures 22, reducing the risk of multiple turbulence structures 22 blocking the flow path of the cooling medium. This facilitates the smooth flow of the cooling medium in the distribution channel 13, reduces the risk of the fuel cell overheating due to cooling medium blockage, and further improves the safety of the fuel cell.

[0046] In some embodiments of the present invention, such as Figure 1 As shown, the spacing between at least two adjacent first turbulence structures 21 is different from the spacing between any other two adjacent first turbulence structures 21.

[0047] In this embodiment, from the cooling medium inlet 11 to the main heat exchange channel 14, any two adjacent first turbulence structures 21 are spaced apart. In some embodiments of this application, from the cooling medium inlet 11 to the main heat exchange channel 14, multiple first turbulence structures 21 in any turbulence structure row 22 are sequentially spaced by a first interval, a second interval, a third interval, a fourth interval, and so on. In some embodiments of this application, the second interval and the third interval are equal, and the first interval is smaller than both the second and third intervals. In some embodiments of this application, the first interval and the second interval are equal, and the third interval is larger than both the first and second intervals.

[0048] However, this application is not limited to this, as long as the spacing between at least two adjacent first turbulence structures 21 is different from the spacing between any other two adjacent first turbulence structures 21. Such an arrangement can make the arrangement of the first turbulence structures 21 reasonable, which is beneficial for the first turbulence structures 21 to be arranged according to the actual flow conditions of the cooling medium. In the location where the flow loss of the cooling medium is large, the spacing between two adjacent first turbulence structures 21 can be increased to reduce the flow loss of the cooling medium. In the location where the flow loss of the cooling medium is small, the spacing between two adjacent first turbulence structures 21 can be decreased to increase the flow loss of the cooling medium. This makes the flow resistance of the cooling medium in the distribution channel 13 uniform, which is beneficial for the uniform distribution of the cooling medium in different positions in the electrode body 1, thereby improving the temperature consistency of different positions in the fuel cell.

[0049] In some embodiments of the present invention, such as Figure 1 As shown, from the cooling medium inlet 11 to the main heat exchange channel 14, the spacing between the multiple first turbulence structures 21 in each row of turbulence structure rows 22 gradually increases.

[0050] In this process, the kinetic energy of the cooling medium gradually decreases from the cooling medium inlet 11 to the main heat exchange channel 14. As the spacing between the multiple first turbulence structures 21 in each row of turbulence structures 22 gradually increases, the arrangement of the multiple first turbulence structures 21 can be made reasonable. This is conducive to the gradual decrease of the density of the first turbulence structures 21 from the cooling medium inlet 11 to the main heat exchange channel 14. As a result, the resistance of the first turbulence structures 21 to the cooling medium can be gradually reduced from the cooling medium inlet 11 to the main heat exchange channel 14, so that the cooling medium can have sufficient kinetic energy. This reduces the risk of some cooling medium being blocked or even forming eddies in the distribution channel 13 due to the depletion of kinetic energy, and thus helps to achieve the effect of the cooling medium flowing smoothly through the distribution channel 13.

[0051] In some embodiments of the present invention, such as Figure 1 As shown, from the cooling medium inlet 11 to the main heat exchange channel 14, the distance between at least two adjacent rows of turbulence structure rows 22 gradually increases.

[0052] In this design, from the cooling medium inlet 11 to the main heat exchange channel 14, the spacing between at least two adjacent rows of turbulence-prone structures 22 gradually increases, allowing the turbulence-prone structures 22 to be arranged radially. When the cooling medium just flows into the distribution channel 13 through the cooling medium inlet 11, the cooling medium has a large kinetic energy. The smaller spacing between adjacent rows of turbulence-prone structures 22 can increase the density of the first turbulence structure 21, which is beneficial for the first turbulence structure 21 to fully turbulent the cooling medium, thereby enabling the cooling medium to fully exchange heat.

[0053] As the cooling medium flows towards the main heat exchange channel 14, its kinetic energy gradually decreases. The increasing spacing between adjacent rows of turbulence-prone structures 22 reduces the density of the first turbulence-prone structure 21, thereby gradually reducing the flow resistance of the cooling medium. This allows the cooling medium to have sufficient kinetic energy to flow through the distribution channel 13. By gradually increasing the spacing between at least two adjacent rows of turbulence-prone structures 22 from the cooling medium inlet 11 to the main heat exchange channel 14, the rationality of the arrangement of the turbulence-prone structure rows 22 can be improved. This facilitates uniform kinetic energy change of the cooling medium during flow, allowing the cooling medium to be evenly distributed at different locations within the electrode body 1, further improving the temperature uniformity at different locations in the fuel cell.

[0054] In some embodiments of the present invention, such as Figure 1As shown, each row of turbulence structure 22 has a center line extending along the length direction of the electrode body 1. The multiple first turbulence structures 21 in each row of turbulence structure 22 are symmetrical about the corresponding center line. The center line of each row of turbulence structure 22 forms an angle with the radial direction of the cooling medium inlet 11. At least two rows of turbulence structure 22 form different angles with the radial direction of the cooling medium inlet 11.

[0055] Each row of turbulence structures 22 has a center line, which can extend along the length of the electrode body 1. Multiple first turbulence structures 21 in each row of turbulence structures 22 are symmetrical about their respective center lines. The center line of each row of turbulence structures 22 forms an angle with the radial direction of the cooling medium inlet 11, and at least two rows of turbulence structures 22 form different angles with the radial direction of the cooling medium inlet 11, so that the turbulence structures 22 are arranged radially.

[0056] In some embodiments of this application, the midline of the turbulence structure row 22 closest to the air inlet 3 forms an angle of approximately 45° with the radial direction of the cooling medium inlet 11. At this angle, the flow path length of the cooling medium from the cooling medium inlet 11 to the main heat exchange channel 14 is the longest, the number of first turbulence structures 21 is the largest, and the flow resistance loss of the cooling medium is the greatest. The midlines of the multiple rows of turbulence structure rows 22 form angles with the radial direction of the cooling medium inlet 11 ranging from 45° to 90°, respectively. The flow path length of the cooling medium from the cooling medium inlet 11 to the main heat exchange channel 14 gradually decreases, and the flow resistance loss of the cooling medium gradually decreases. The midlines of the multiple rows of turbulence structure rows 22 form angles with the radial direction of the cooling medium inlet 11 ranging from 45° to 90°, respectively. This allows for a gradual reduction in the spacing between adjacent rows of turbulence structure rows 22, thereby increasing the flow resistance applied to the cooling medium by the turbulence structure rows 22.

[0057] When the midline of the turbulence structure row 22 forms a 90° angle with the radial direction of the cooling medium inlet 11, the flow path length of the cooling medium from the cooling medium inlet 11 to the main heat exchange channel 14 is the shortest, the number of first turbulence structures 21 is the fewest, the flow resistance loss of the cooling medium is the smallest, and the spacing between adjacent rows of turbulence structure rows 22 is the smallest, resulting in the densest arrangement of the turbulence structure rows 22. As the midline of multiple rows of turbulence structure rows 22 forms angles with the radial direction of the cooling medium inlet 11 ranging from 90° to 135°, the flow path length of the cooling medium from the cooling medium inlet 11 to the main heat exchange channel 14 gradually increases, and the flow resistance loss of the cooling medium gradually increases. By gradually increasing the spacing between adjacent rows of turbulence structure rows 22, the flow resistance exerted by the turbulence structure rows 22 on the cooling medium can be reduced. By changing the arrangement of the turbulence structure row 22, the flow resistance of the cooling medium along different paths can be made uniform, which is conducive to the cooling medium being more evenly distributed in different positions within the electrode body 1.

[0058] In some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the first turbulence structure 21 may include: a first main body 211 and a second main body 212 connected together. From the cooling medium inlet 11 to the main heat exchange channel 14, the second main body 212 is located on the side of the first main body 211 away from the cooling medium inlet 11. The length of the connection between the first main body 211 and the second main body 212 is D1. Along the arrangement direction of the first main body 211 and the second main body 212, the height of the first main body 211 is L, satisfying the relationship: 1.2≤L / D1≤2.5.

[0059] In some embodiments of this application, the first body 211 and the second body 212 can be integrally formed so that the first body 211 and the second body 212 are connected. In some embodiments of this application, the first body 211 and the second body 212 can be bonded together so that the first body 211 and the second body 212 are connected. From the cooling medium inlet 11 to the main heat exchange channel 14, the first body 211 is disposed on the side closest to the cooling medium inlet 11, and the second body 212 is disposed on the side closest to the main heat exchange channel 14; that is, the second body 212 is located on the side of the first body 211 opposite to the cooling medium inlet 11.

[0060] As some embodiments of this application, such as Figure 2As shown, the first main body 211 can be constructed as a triangular prism structure, and the second main body 212 can be constructed as a semi-cylindrical structure, so that the first main body 211 and the second main body 212 can be connected to form a teardrop-shaped structure. The length of the connection between the first main body 211 and the second main body 212 is D1, and the height of the first main body 211 along the arrangement direction of the first main body 211 and the second main body 212 is L. The length of the connection between the first main body 211 and the second main body 212 and the height of the first main body 211 satisfy the relationship: 1.2≤L / D1≤2.5. For example, L / D1 can be 1.2, 2.0 or 2.5, but this application is not limited to this. L / D1 can be any value from 1.2 to 2.5, as long as the length of the connection between the first body 211 and the second body 212 and the height of the first body 211 satisfy the relationship: 1.2≤L / D1≤2.5. This setting can make the structural design of the first turbulence structure 21 reasonable, which is conducive to the first turbulence structure 21 guiding the cooling medium from the cooling medium inlet 11 to the main heat exchange channel 14, thereby facilitating the smooth flow of the cooling medium to the main heat exchange channel 14.

[0061] As some embodiments of this application, the turbulence structure row 22 may include a plurality of first turbulence structures 21. From the cooling medium inlet 11 to the main heat exchange channel 14, the distance between the first and second first turbulence structures 21, and the distance between the second and third first turbulence structures 21, can be 1-1.2 times L. The distance between the third and fourth, fourth and fifth, and fifth and sixth first turbulence structures 21 can be 1.3-1.5 times L. If the distance from the cooling medium inlet 11 to the main heat exchange channel 14 is long, the spacing between the first turbulence structures 21 can be gradually increased.

[0062] In some embodiments of the present invention, such as Figure 1 As shown, there are multiple main heat exchange channels 14, which are arranged along the width direction of the electrode body 1. At least one main heat exchange channel 14 is provided with a second turbulence structure 141, which is fixed to the electrode body 1.

[0063] In some embodiments of this application, there may be twenty main heat exchange channels 14. In some embodiments of this application, there may be twenty-five main heat exchange channels 14. However, this application is not limited to these, and the number of main heat exchange channels 14 can be arranged according to the size of the electrode plate 100. Multiple main heat exchange channels 14 are arranged sequentially along the width direction of the electrode plate body 1 so that the cooling medium can uniformly cool the electrode plate 100 along the width direction of the electrode plate body 1, thereby making the temperature of the fuel cell tend to be uniform along the width direction of the electrode plate body 1.

[0064] In some embodiments of this application, a second turbulence structure 141 is provided within one main heat exchange channel 14. In some embodiments of this application, the second turbulence structure 141 is provided within ten main heat exchange channels 14. In some embodiments of this application, the second turbulence structure 141 is provided within all main heat exchange channels 14. In some embodiments of this application, the second turbulence structure 141 and the electrode plate body 1 can be integrally formed, so that the second turbulence structure 141 is fixed to the electrode plate body 1, thereby enabling the second turbulence structure 141 to reliably perform its turbulence function within the main heat exchange channels 14.

[0065] There can be multiple second turbulence structures 141 within the main heat exchange channel 14. For example, there can be two or ten second turbulence structures 141 within the main heat exchange channel 14. However, this application is not limited to this; there can be even more second turbulence structures 141 within the main heat exchange channel 14, so that the multiple second turbulence structures 141 can be arranged at different positions within the main heat exchange channel 14. As some embodiments of this application, the second turbulence structures 141 can be arranged along both sides of the main heat exchange channel 14, and the second turbulence structures 141 on both sides of the main heat exchange channel 14 can be staggered, thereby improving the turbulence effect of the second turbulence structures 141. By setting multiple second turbulence structures 141 to fully turbulent the cooling medium, the cooling medium can flow fully within the main heat exchange channel 14, which is beneficial for the cooling medium to fully exchange heat within the main heat exchange channel 14, thereby improving the cooling effect of the fuel cell.

[0066] In some embodiments of the present invention, such as Figure 1 As shown, the electrode body 1 has a cooling medium flow space 15, and the cooling medium flow space 15 is provided with a plurality of partition walls 151. The partition walls 151 extend along the length direction of the electrode body 1, and the plurality of partition walls 151 are spaced apart sequentially along the width direction of the electrode body 1 to divide the cooling medium flow space 15 into a plurality of main heat exchange channels 14.

[0067] The electrode body 1 includes a cooling medium flow space 15 within which the cooling medium can flow. The cooling medium flow space 15 is provided with multiple partition walls 151, for example, nineteen partition walls 151 extending along the length of the electrode body 1. Along the width of the electrode body 1, the nineteen partition walls 151 are spaced apart sequentially to divide the cooling medium flow space 15 into twenty main heat exchange channels 14. By having the partition walls 151 extend along the length of the electrode body 1, and by having multiple partition walls 151 spaced apart sequentially along the width of the electrode body 1, the cooling medium can flow evenly through the multiple main heat exchange channels 14 along the width of the electrode body 1. This allows the cooling medium to uniformly cool the electrode 100 along the width of the electrode body 1, thereby making the temperature of the fuel cell more uniform along the width of the electrode body 1.

[0068] As some embodiments of this application, such as Figure 1 As shown, the second turbulence structure 141 can be constructed as half of the first turbulence structure 21. It should be noted that the half of the first turbulence structure 21 is a half of the first turbulence structure 21 cut along the midline. Along the width direction of the electrode body 1, the partition wall 151 has opposite sides, and multiple second turbulence structures 141 are arranged on both sides of the partition wall 151. The second turbulence structures 141 can be staggered on both sides of the partition wall 151 so that the width of the main heat exchange channel 14 can show a trend of alternating contraction and expansion, thereby enhancing the disturbance to the cooling medium and further enhancing the heat exchange effect of the cooling medium. Along the extension direction of the partition wall 151, the second turbulence structures 141 on one side of the partition wall 151 are arranged sequentially and evenly at intervals, and the distance between any two adjacent second turbulence structures 141 can be Z, satisfying the relationship 4(L+D1 / 2)≤Z≤6(L+D1 / 2). This arrangement makes the arrangement of the second turbulence structures 141 reasonable, which is beneficial to increasing the heat exchange area of ​​the cooling medium in the main heat exchange channel 14. Specifically, it can increase the heat exchange area by about 20%, thereby further enhancing the heat exchange effect of the cooling medium.

[0069] In some embodiments of the present invention, such as Figure 1 As shown, a converging flow channel 16 is also formed inside the electrode plate body 1. The converging flow channel 16 is located between the cooling medium outlet 12 and the main heat exchange flow channel 14. A turbulence section 2 is provided inside the converging flow channel 16.

[0070] The electrode body 1 may also have a converging channel 16, which allows the cooling medium to converge. The converging channel 16 is located between the cooling medium outlet 12 and the main heat exchange channel 14. After the cooling medium completes heat exchange in the main heat exchange channel 14, it flows to the converging channel 16. The converging channel 16 guides the cooling medium so that it gradually converges to the cooling medium outlet 12, allowing the cooling medium to flow out of the electrode body 1 through the cooling medium outlet 12.

[0071] A flow-dispersing section 2 is also provided within the converging channel 16. This section 2 guides and turbulents the cooling medium within the converging channel 16, allowing it to flow smoothly to the cooling medium outlet 12. In some embodiments of this application, the flow-dispersing section 2 and the electrode body 1 can be integrally formed, ensuring a fixed connection between them. This allows the flow-dispersing section 2 to reliably exert its turbulent effect within the converging channel 16, enabling sufficient heat exchange of the cooling medium within the channel and further improving the cooling effect of the cooling medium on the fuel cell.

[0072] Furthermore, by turbulence 2 turbulently circulating the cooling medium within the converging channel 16, the flow velocity of the cooling medium within the converging channel 16 can be reduced, thereby reducing the flow velocity of the cooling medium within the main heat exchange channel 14. This facilitates sufficient heat exchange of the cooling medium within the main heat exchange channel 14, and further enhances the cooling effect of the cooling medium on the fuel cell.

[0073] The fuel cell according to an embodiment of the present invention includes the electrode plate 100 of the fuel cell described in the above embodiment. By forming a distribution channel 13 and a main heat exchange channel 14 in the electrode plate body 1, and by providing a turbulence-disrupting part 2 in the distribution channel 13, the turbulence-disrupting part 2 can guide and turbulent the cooling medium, which is beneficial to improving the uniformity of the distribution of the cooling medium in the electrode plate body 1, thereby improving the temperature consistency at different locations of the fuel cell. Furthermore, the turbulent cooling medium can flow sufficiently in the electrode plate body 1, which is beneficial to the sufficient heat exchange of the cooling medium, thereby improving the cooling effect of the fuel cell.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A electrode plate for a fuel cell, characterized in that, include: An electrode plate body has a cooling medium inlet and a cooling medium outlet, the cooling medium inlet and the cooling medium outlet are arranged along the length direction of the electrode plate body, and a distribution channel and a main heat exchange channel are formed inside the electrode plate body. The distribution channel is located between the cooling medium inlet and the main heat exchange channel, and the main heat exchange channel is located between the cooling medium outlet and the distribution channel. The distribution channel connects the cooling medium inlet and the main heat exchange channel, and the main heat exchange channel connects the cooling medium outlet and the distribution channel. A flow-disrupting section is provided in the distribution channel and fixedly connected to the electrode plate body. The flow-disrupting section includes a plurality of first flow-disrupting structures, with adjacent first flow-disrupting structures spaced apart. Multiple first turbulence structures form multiple rows of turbulence structure rows, which are arranged along the width direction of the electrode body. Any two adjacent rows of turbulence structure rows are spaced apart, and each row of turbulence structure rows includes multiple first turbulence structures. The multiple first turbulence structures in each row of turbulence structure rows are arranged along the length direction of the electrode body. The spacing between at least two adjacent first perturbation structures is different from the spacing between any other two adjacent first perturbation structures; From the cooling medium inlet to the main heat exchange channel, the spacing between the multiple first turbulence structures in each row of turbulence structures gradually increases; From the cooling medium inlet to the main heat exchange channel, the spacing between at least two adjacent rows of the turbulence structure gradually increases; The first turbulence structure includes: a first main body and a second main body connected together, extending from the cooling medium inlet to the main heat exchange channel. The second main body is located on the side of the first main body away from the cooling medium inlet. The length of the connection between the first main body and the second main body is D1. Along the arrangement direction of the first main body and the second main body, the height of the first main body is L, satisfying the relationship: 1.2≤L / D1≤2.

5. The first main body is a triangular prism structure, and the second main body is a semi-cylindrical structure.

2. The electrode plate of the fuel cell according to claim 1, characterized in that, Each row of the turbulence structure has a median line extending along the length of the electrode body. The plurality of first turbulence structures in each row of the turbulence structure are symmetrical about the corresponding median line. The median line of each row of the turbulence structure forms an angle with the radial direction of the cooling medium inlet. At least two rows of the turbulence structure have different angles formed between the median line and the radial direction of the cooling medium inlet.

3. The electrode plate of the fuel cell according to any one of claims 1-2, characterized in that, There are multiple main heat exchange channels, which are arranged along the width direction of the electrode body. At least one of the main heat exchange channels is provided with a second turbulence structure, which is fixed to the electrode body.

4. The electrode plate of the fuel cell according to claim 3, characterized in that, The electrode plate body has a cooling medium flow space, and the cooling medium flow space is provided with a plurality of partition walls. The partition walls extend along the length direction of the electrode plate body, and the plurality of partition walls are spaced apart sequentially along the width direction of the electrode plate body to divide the cooling medium flow space into a plurality of main heat exchange channels.

5. The electrode plate of the fuel cell according to any one of claims 1-2, characterized in that, The electrode plate body also has a converging flow channel, which is located between the cooling medium outlet and the main heat exchange channel, and the converging flow channel is provided with the turbulence part.

6. A fuel cell, characterized in that, Includes the electrode plates of the fuel cell according to any one of claims 1-5.

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