Polar plate of fuel cell and fuel cell

Abstract

The invention discloses a polar plate of a fuel cell and the fuel cell, and relates to the technical field of cells, the polar plate of the fuel cell comprises a polar plate main body, a cooling medium inlet and a cooling medium outlet are arranged along the length direction of the polar plate main body, and a distribution runner is located between the cooling medium inlet and a main heat exchange runner. The main heat exchange runner is positioned between the cooling medium outlet and the distribution runner; the turbulent flow part is arranged in the distribution flow channel and comprises a plurality of first turbulent flow structures, and every two adjacent first turbulent flow structures are spaced. The distribution runner and the main heat exchange runner are formed in the polar plate main body, and the turbulent flow part is arranged in the distribution runner, so that the turbulent flow part can guide and disturb the cooling medium, the distribution uniformity of the cooling medium in the polar plate main body is improved, and the temperature consistency of different positions of the fuel cell is improved; and the turbulent cooling medium can fully flow in the polar plate main body, so that the cooling medium can fully exchange heat, and the cooling effect of the fuel cell is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a polar plate of a fuel cell and a fuel cell having the polar plate. Background Art

[0002] In the related art, cooling channels can be arranged on the electrode plates, and by allowing the cooling medium to flow in the cooling channels, the cooling medium can take away the heat of the fuel cell. However, the cooling medium flows at a high speed in the cooling channels, resulting in insufficient heat exchange of the cooling medium, and the cooling medium is unevenly distributed in the cooling channels, resulting in poor temperature consistency at different positions of the fuel cell, thereby resulting in poor cooling effect of the fuel cell. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a fuel cell plate that improves the temperature consistency of different positions of 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 provides a fuel cell.

[0005] The electrode plate of the fuel cell according to an embodiment of the present invention comprises: a electrode plate body, the electrode plate body having 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 in the electrode plate body, the distribution channel is located between the cooling medium inlet and the main heat exchange channel, 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 spoiler, the spoiler is arranged in the distribution channel and is fixedly connected to the electrode plate body, the spoiler comprises a plurality of first spoiler structures, and two adjacent first spoiler structures are spaced apart.

[0006] According to the electrode plate of the fuel cell according to the embodiment of the present invention, a distribution flow channel and a main heat exchange flow channel are formed in the electrode plate body, and the spoiler is arranged in the distribution flow channel, so that the spoiler can guide and turbulent the cooling medium, which is beneficial to improve the uniformity of distribution of the cooling medium in the electrode plate body, thereby improving the temperature consistency of different positions of the fuel cell, and the cooling medium after the disturbance can flow fully in the electrode plate body, which is beneficial to sufficient heat exchange of the cooling medium, thereby improving the cooling effect of the fuel cell.

[0007] In some embodiments of the present invention, a plurality of first spoiler structures form a plurality of rows of spoiler structures, and the plurality of rows of spoiler structures are arranged along the width direction of the electrode body. Any two adjacent rows of spoiler structures are separated, and each row of spoiler structures includes a plurality of first spoiler structures, and the plurality of first spoiler structures in each row of spoiler structures are arranged along the length direction of the electrode body.

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

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

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

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

[0012] In some embodiments of the present invention, the first spoiler structure includes: a first main body and a second main body connected to each other, from the cooling medium inlet to the main heat exchange flow 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, and 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 spoiler structure, which is fixed to the electrode body.

[0014] In some embodiments of the present invention, a cooling medium flow space is provided in the electrode plate body, and a plurality of partition walls are provided in the cooling medium flow space. The partition walls extend along the length direction of the electrode plate body, and the plurality of partition walls are sequentially spaced apart along the width direction of the electrode plate 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 further formed in the electrode body, the converging flow channel is located between the cooling medium outlet and the main heat exchange flow channel, and a spoiler is provided in the converging flow channel.

[0016] A fuel cell according to an embodiment of the present invention includes the electrode plate of the fuel cell of the above embodiment.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0021] Reference numerals:

[0022] Plate 100;

[0023] Plate body 1;

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

[0025] Main heat exchange flow channel 14; second spoiler structure 141;

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

[0027] Converging flow channel 16;

[0028] Spoiler 2;

[0029] A first spoiler structure 21; a first body 211; a second body 212;

[0030] spoiler structure row 22;

[0031] Air inlet 3; air outlet 4; hydrogen inlet 5; hydrogen outlet 6. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] Reference below Figure 1-Figure 2The electrode plate 100 of the 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 perform 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: a electrode plate body 1, the electrode plate body 1 has a cooling medium inlet 11 and a cooling medium outlet 12, the cooling medium inlet 11 and the cooling medium outlet 12 are arranged along the length direction of the electrode plate body 1, and a distribution channel 13 and a main heat exchange channel 14 are formed in the electrode plate body 1, the distribution channel 13 is located between the cooling medium inlet 11 and the main heat exchange channel 14, the main heat exchange channel 14 is located between the cooling medium outlet 12 and the distribution channel 13, the distribution channel 13 connects the cooling medium inlet 11 and the main heat exchange channel 14, and the main heat exchange channel 14 connects the cooling medium outlet 12 and the distribution channel 13; a spoiler 2, the spoiler 2 is arranged in the distribution channel 13 and is fixedly connected to the electrode plate body 1, the spoiler 2 includes a plurality of first spoiler structures 21, and two adjacent first spoiler structures 21 are spaced apart.

[0035] Among them, along the length direction of the plate body 1, the plate body 1 has two opposite ends, the cooling medium inlet 11 is arranged near one end of the plate body 1, and the cooling medium outlet 12 is arranged near the other end of the plate body 1. The cooling medium can flow into the plate body 1 from the cooling medium inlet 11 and flow out of the plate body 1 from the cooling medium outlet 12, so that the cooling medium can exchange heat in the plate body 1. A distribution channel 13 and a main heat exchange channel 14 are formed in the plate body 1. The distribution channel 13 and the main heat exchange channel 14 are arranged along the length direction of the plate 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 direction of the plate 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 in sequence.

[0036] The distribution channel 13 connects the cooling medium inlet 11 and the main heat exchange channel 14, and 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, so that the cooling medium can flow into the distribution channel 13 through the cooling medium inlet 11, and the cooling medium can flow into the main heat exchange channel 14 after flowing through the distribution channel 13, and then flow out of the plate body 1 through the cooling medium outlet 12, thereby achieving the effect of smooth circulation of the cooling medium in the plate body 1.

[0037] The spoiler 2 is disposed in the distribution channel 13, and the spoiler 2 can disturb and guide the cooling medium in the distribution channel 13, so that the cooling medium can smoothly pass through the distribution channel 13 and flow into the main heat exchange channel 14, which is conducive to improving the uniformity of the distribution of the cooling medium in the distribution channel 13 and the main heat exchange channel 14, thereby improving the temperature consistency of different positions of the fuel cell. As some embodiments of the present application, the spoiler 2 and the plate body 1 can be integrally formed so that the spoiler 2 is fixedly connected to the plate body 1, so that the spoiler 2 can reliably play a spoiler role in the distribution channel 13.

[0038] The spoiler 2 includes multiple first spoiler structures 21, for example: the spoiler 2 may include two first spoiler structures 21, the spoiler 2 may include ten first spoiler structures 21, the spoiler 2 may include fifty first spoiler structures 21, but the present application is not limited to this. The spoiler 2 may include more first spoiler structures 21, so that the multiple first spoiler structures 21 can be respectively arranged at different positions in the distribution channel 13. By setting multiple first spoiler structures 21 to fully disrupt and guide the cooling medium, the cooling medium can flow fully in the electrode plate body 1, which is beneficial to the cooling medium in the electrode plate body 1. Full heat exchange, thereby improving the cooling effect of the fuel cell.

[0039] The two adjacent first spoiler structures 21 are arranged to be spaced apart so that a flow channel can be formed between the two adjacent first spoiler structures 21, which is beneficial for the cooling medium to flow through the flow channel between the two adjacent first spoiler structures 21, reduces the risk of multiple first spoiler structures 21 blocking the cooling medium flow path, and can also reduce the risk of cooling medium blockage caused by the connection of multiple first spoiler structures 21, thereby facilitating the smooth flow of the cooling medium in the distribution channel 13, reducing the risk of excessive temperature of the fuel cell caused by cooling medium blockage, and further facilitating the temperature of the fuel cell to be maintained within a suitable operating temperature range, which is beneficial to improving the safety of the fuel cell.

[0040] Specifically, along the length direction of the plate 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 in sequence and connected, and the cooling medium can flow from the cooling medium inlet 11 into the distribution channel 13. The first spoiler structure 21 can make the cooling medium flow fully in the distribution channel 13, and the cooling medium can be uniformly spoiled and directed to the main heat exchange channel 14 through the first spoiler structure 21, so that the cooling medium is evenly distributed in different positions of the main heat exchange channel 14. The cooling medium can cool the plate 100 in both the distribution channel 13 and the main heat exchange channel 14, thereby reducing the temperature of the fuel cell, which is conducive to keeping the temperature of the fuel cell within a suitable operating temperature range, thereby improving the safety of the fuel cell. After the cooling medium completes the heat exchange in the plate body 1, it can flow out of the plate body 1 through the cooling medium outlet 12, so that the new cooling medium can flow into the plate body 1 through the cooling medium inlet 11 and exchange heat, thereby achieving the effect of continuously cooling the fuel cell, further improving the safety of the fuel cell.

[0041] Therefore, by forming a distribution channel 13 and a main heat exchange channel 14 in the electrode body 1, and the spoiler 2 is arranged in the distribution channel 13, the spoiler 2 can guide and turbulent the cooling medium, which is beneficial to improve the uniformity of distribution of the cooling medium in the electrode body 1, thereby improving the temperature consistency of different positions of the fuel cell, and the cooling medium after disturbance can fully flow in the electrode body 1, which is beneficial to sufficient heat exchange of the cooling medium, thereby improving the cooling effect of the fuel cell.

[0042] In some embodiments of the present invention, Figure 1 As shown, a plurality of first spoiler structures 21 form a plurality of rows of spoiler structure rows 22, and the plurality of rows of spoiler structure rows 22 are arranged along the width direction of the electrode body 1, and any two adjacent rows of spoiler structure rows 22 are spaced apart, and each row of spoiler structure rows 22 includes a plurality of first spoiler structures 21, and the plurality of first spoiler structures 21 in each row of spoiler structure rows 22 are arranged along the length direction of the electrode body 1.

[0043] Among them, as some embodiments of the present application, multiple first spoiler structures 21 form two rows of spoiler structure rows 22. As some embodiments of the present application, multiple first spoiler structures 21 form seven rows of spoiler structure rows 22. As some embodiments of the present application, multiple first spoiler structures 21 form fifteen rows of spoiler structure rows 22. However, the present application is not limited thereto, and multiple first spoiler structures 21 may also form more rows of spoiler structure rows 22, as long as multiple first spoiler structures 21 form multiple rows of spoiler structure rows 22.

[0044] As some embodiments of the present application, each row of spoiler structure rows 22 may include five first spoiler structures 21. As some embodiments of the present application, each row of spoiler structure rows 22 may include six first spoiler structures 21. Along the length direction of the electrode body 1, the multiple first spoiler structures 21 in each row of spoiler structure rows 22 are arranged in sequence.

[0045] Along the width direction of the electrode body 1, multiple rows of spoiler structure rows 22 are arranged in sequence, and any two adjacent rows of spoiler structure rows 22 are arranged apart from each other, so that the cooling medium can flow through the gap between any two adjacent rows of spoiler structure rows 22, reducing the risk of multiple spoiler structure rows 22 blocking the cooling medium flow path, thereby facilitating the smooth flow of the cooling medium in the distribution channel 13, reducing the risk of excessive temperature of the fuel cell caused by cooling medium blockage, and further improving the safety of the fuel cell.

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

[0047] Among them, from the cooling medium inlet 11 to the main heat exchange flow channel 14, there is a spacing distance between any two adjacent first spoiler structures 21. As some embodiments of the present application, from the cooling medium inlet 11 to the main heat exchange flow channel 14, a plurality of first spoiler structures 21 of any spoiler structure row 22 sequentially form a first spacing distance, a second spacing distance, a third spacing distance, a fourth spacing distance, and so on. As some embodiments of the present application, the second spacing distance and the third spacing distance are equal, and the first spacing distance is less than the second spacing distance and the third spacing distance. As some embodiments of the present application, the first spacing distance and the second spacing distance are equal, and the third spacing distance is greater than the first spacing distance and the second spacing distance.

[0048] However, the present application is not limited thereto, as long as the spacing distance between at least two adjacent first spoiler structures 21 is different from the spacing distance between any other two adjacent first spoiler structures 21. Such an arrangement can make the arrangement of the first spoiler structure 21 reasonable, which is conducive to the arrangement of the first spoiler structure 21 according to the actual flow conditions of the cooling medium, increase the spacing distance between the two adjacent first spoiler structures 21 at the location where the cooling medium flow loss is large, so as to reduce the cooling medium flow loss, and reduce the spacing distance between the two adjacent first spoiler structures 21 at the location where the cooling medium flow loss is small, so as to increase the cooling medium flow loss, so as to make the flow resistance of the cooling medium in the distribution channel 13 uniform, which is conducive to the uniform distribution of the cooling medium at different positions in the plate body 1, thereby improving the temperature consistency of different positions of the fuel cell.

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

[0050] Among them, the kinetic energy of the cooling medium gradually decreases from the cooling medium inlet 11 to the main heat exchange flow channel 14. By gradually increasing the spacing distance between the multiple first spoiler structures 21 in each row of spoiler structures 22, the arrangement of the multiple first spoiler structures 21 can be reasonable, which is beneficial to the density of the first spoiler structures 21 gradually decreasing from the cooling medium inlet 11 to the main heat exchange flow channel 14, so that the resistance of the first spoiler structure 21 to the cooling medium can be gradually reduced from the cooling medium inlet 11 to the main heat exchange flow channel 14, so that the cooling medium can have sufficient kinetic energy, reducing the risk of cooling medium being blocked in the distribution flow channel 13 or even causing eddy currents due to the exhaustion of kinetic energy of part of the cooling medium, which is beneficial to achieving the effect of the cooling medium flowing smoothly through the distribution flow channel 13.

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

[0052] Among them, from the cooling medium inlet 11 to the main heat exchange flow channel 14, the spacing between at least two adjacent rows of spoiler structure rows 22 gradually increases, so that the spoiler structure rows 22 can be arranged radially. When the cooling medium just flows into the distribution flow channel 13 through the cooling medium inlet 11, the cooling medium has a large kinetic energy, and the spacing between the two adjacent rows of spoiler structure rows 22 is small, which can increase the density of the first spoiler structure 21, which is conducive to the first spoiler structure 21 to fully turbulent the cooling medium, so that the cooling medium can fully exchange heat.

[0053] As the cooling medium flows toward the main heat exchange flow channel 14, the kinetic energy of the cooling medium gradually decreases, and the spacing between two adjacent rows of spoiler structure rows 22 gradually increases, which can reduce the arrangement density of the first spoiler structure 21, thereby gradually reducing the flow resistance of the cooling medium, so that the cooling medium can have sufficient kinetic energy to flow through the distribution flow channel 13. By gradually increasing the spacing between at least two adjacent rows of spoiler structure rows 22 from the cooling medium inlet 11 to the main heat exchange flow channel 14, the rationality of the arrangement of the spoiler structure rows 22 can be improved, which is conducive to the uniform change of the kinetic energy of the cooling medium during the flow process, so that the cooling medium can be evenly distributed at different positions in the plate body 1, thereby further improving the temperature consistency of different positions of the fuel cell.

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

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

[0056] As some embodiments of the present application, the midline of the spoiler structure row 22 located closest to the air inlet 3 forms an angle of 45° or about 45° with the radial direction of the cooling medium inlet 11. At this time, the flow path length of the cooling medium from the cooling medium inlet 11 to the main heat exchange flow channel 14 is the longest, the number of first spoiler structures 21 arranged is the largest, and the flow resistance loss of the cooling medium is the largest. The midlines of multiple rows of spoiler structure rows 22 respectively form angles of 45° to 90° 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 flow channel 14 gradually decreases, and the flow resistance loss of the cooling medium gradually decreases. The midlines of multiple rows of spoiler structure rows 22 respectively form angles of 45° to 90° with the radial direction of the cooling medium inlet 11, and the spacing between two adjacent rows of spoiler structure rows 22 can be gradually reduced to increase the flow resistance applied by the spoiler structure rows 22 to the cooling medium.

[0057] When the midline of the spoiler structure row 22 forms an angle of 90° 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 flow channel 14 is the shortest, the number of the first spoiler structure 21 is the least, and the flow resistance loss of the cooling medium is the smallest. Here, the spacing between the two adjacent rows of spoiler structure rows 22 is the smallest, and the arrangement of the spoiler structure rows 22 is the densest. The midlines of the multiple rows of spoiler structure rows 22 respectively form angles of 90° to 135° with the radial direction of the cooling medium inlet 11, and the flow path length of the cooling medium from the cooling medium inlet 11 to the main heat exchange flow channel 14 gradually increases. The flow resistance loss of the cooling medium gradually increases. The midlines of the multiple rows of spoiler structure rows 22 respectively form angles of 90° to 135° with the radial direction of the cooling medium inlet 11, and the spacing between the two adjacent rows of spoiler structure rows 22 can be gradually increased to reduce the flow resistance applied by the spoiler structure rows 22 to the cooling medium. By changing the arrangement of the spoiler structure rows 22 , the flow resistance of the cooling medium flowing along different paths can be made uniform, thereby facilitating a more uniform distribution of the cooling medium at different positions in the electrode body 1 .

[0058] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the first spoiler structure 21 may include: a first main body 211 and a second main body 212 connected to each other. 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] Among them, as some embodiments of the present 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. As some embodiments of the present application, the first body 211 and the second body 212 can be bonded to connect the first body 211 and the second body 212. From the cooling medium inlet 11 to the main heat exchange channel 14, the first body 211 is arranged on a side close to the cooling medium inlet 11, and the second body 212 is arranged on a side close to the main heat exchange channel 14, that is, the second body 212 is located on the side of the first body 211 away from the cooling medium inlet 11.

[0060] As some embodiments of the present application, Figure 2As shown, the first body 211 can be configured as a triangular prism structure, and the second body 212 can be configured as a semi-cylindrical structure, so that the first body 211 and the second body 212 can be configured as a teardrop-shaped structure after being connected. The length of the connection between the first body 211 and the second body 212 is D1, and along the arrangement direction of the first body 211 and the second body 212, the height of the first body 211 is L, and 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. For example: L / D1 can be 1.2, 2.0 or 2.5, but the present application is not limited thereto. L / D1 can be any value between 1.2 and 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. Such a setting can make the structural design of the first spoiler structure 21 reasonable, which is beneficial for the first spoiler structure 21 to guide the cooling medium from the cooling medium inlet 11 to the main heat exchange channel 14, thereby facilitating the cooling medium to flow smoothly to the main heat exchange channel 14.

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

[0062] In some embodiments of the present invention, 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 spoiler structure 141, and the second spoiler structure 141 is fixed to the electrode body 1.

[0063] Among them, as some embodiments of the present application, the main heat exchange flow channels 14 can be twenty. As some embodiments of the present application, the main heat exchange flow channels 14 can be twenty-five. However, the present application is not limited thereto, and the number of the main heat exchange flow channels 14 can be arranged according to the size of the electrode plate 100. The multiple main heat exchange flow channels 14 are arranged in sequence along the width direction of the electrode plate body 1, so that the cooling medium can evenly cool the electrode plate 100 along the width direction of the electrode plate body 1, so that the temperature of the fuel cell along the width direction of the electrode plate body 1 tends to be consistent.

[0064] As some embodiments of the present application, a second spoiler structure 141 is provided in one main heat exchange flow channel 14. As some embodiments of the present application, a second spoiler structure 141 is provided in ten main heat exchange flow channels 14. As some embodiments of the present application, a second spoiler structure 141 is provided in all main heat exchange flow channels 14. As some embodiments of the present application, the second spoiler structure 141 and the electrode body 1 can be integrally formed so that the second spoiler structure 141 is fixed to the electrode body 1, so that the second spoiler structure 141 can reliably play a spoiler role in the main heat exchange flow channel 14.

[0065] There may be multiple second spoiler structures 141 in the main heat exchange channel 14, for example, there may be two second spoiler structures 141 in the main heat exchange channel 14, or there may be ten second spoiler structures 141 in the main heat exchange channel 14, but the present application is not limited thereto, and there may be more second spoiler structures 141 in the main heat exchange channel 14, so that the multiple second spoiler structures 141 can be arranged at different positions in the main heat exchange channel 14, respectively. As some embodiments of the present application, the second spoiler structures 141 can be arranged along both sides of the main heat exchange channel 14, and the second spoiler structures 141 on both sides of the main heat exchange channel 14 can be arranged staggered, thereby improving the spoiler effect of the second spoiler structures 141. By providing multiple second spoiler structures 141 to fully spoil the cooling medium, the cooling medium can flow fully in the main heat exchange channel 14, which is beneficial for the cooling medium to fully exchange heat in the main heat exchange channel 14, thereby improving the cooling effect of the fuel cell.

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

[0067] Among them, the plate body 1 has a cooling medium flow space 15, and the cooling medium can flow in the cooling medium flow space 15. A plurality of partition walls 151 are provided in the cooling medium flow space 15, for example, nineteen partition walls 151 are provided in the cooling medium flow space 15, and the nineteen partition walls 151 extend along the length direction of the plate body 1. Along the width direction of the plate body 1, the nineteen partition walls 151 are sequentially spaced apart to divide the cooling medium flow space 15 into twenty main heat exchange channels 14. The partition walls 151 extend along the length direction of the plate body 1, and the plurality of partition walls 151 are sequentially spaced apart along the width direction of the plate body 1 to divide the cooling medium flow space 15 into a plurality of main heat exchange channels 14, so that the cooling medium can flow uniformly through the plurality of main heat exchange channels 14 along the width direction of the plate body 1, so that the cooling medium can uniformly cool the plate 100 along the width direction of the plate body 1, and thus the temperature of the fuel cell along the width direction of the plate body 1 is more uniform.

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

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

[0070] Among them, a converging flow channel 16 may also be formed in the electrode body 1, and the converging flow channel 16 can make the cooling medium converge. The converging flow channel 16 is located between the cooling medium outlet 12 and the main heat exchange flow channel 14. After the heat exchange in the main heat exchange flow channel 14 is completed, the cooling medium flows to the converging flow channel 16. The converging flow channel 16 guides the cooling medium so that the cooling medium gradually converges to the cooling medium outlet 12, so that the cooling medium can flow out of the electrode body 1 through the cooling medium outlet 12.

[0071] A flow spoiler 2 is also provided in the converging flow channel 16, and the flow spoiler 2 can guide and turbulent the cooling medium in the converging flow channel 16, so that the cooling medium can smoothly converge to the cooling medium outlet 12. As some embodiments of the present application, the flow spoiler 2 and the plate body 1 can be integrally formed, so that the flow spoiler 2 and the plate body 1 are fixedly connected, so that the flow spoiler 2 can reliably play a turbulent role in the converging flow channel 16, so that the cooling medium can fully exchange heat in the converging flow channel 16, thereby further improving the cooling effect of the cooling medium on the fuel cell.

[0072] Furthermore, by disturbing the cooling medium in the converging channel 16 through the spoiler 2, the flow velocity of the cooling medium in the converging channel 16 can be slowed down, thereby slowing down the flow velocity of the cooling medium in the main heat exchange channel 14, which is beneficial to sufficient heat exchange of the cooling medium in the main heat exchange channel 14, and further beneficial to further improve the cooling effect of the cooling medium on the fuel cell.

[0073] The fuel cell according to the embodiment of the present invention comprises the electrode plate 100 of the fuel cell of the above embodiment. By forming the distribution channel 13 and the main heat exchange channel 14 in the electrode plate body 1, and the spoiler 2 is arranged in the distribution channel 13, the spoiler 2 can guide and turbulent the cooling medium, which is beneficial to improve the distribution uniformity of the cooling medium in the electrode plate body 1, thereby improving the temperature consistency of different positions of the fuel cell, and the cooling medium after the turbulence can fully flow 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 description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

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

Claims

1. A fuel cell plate, characterized in that: include: A plate body, wherein the 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 plate body, and a distribution channel and a main heat exchange channel are formed in the plate body, the distribution channel is located between the cooling medium inlet and the main heat exchange channel, 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 spoiler is provided in the distribution flow channel and fixedly connected to the electrode body, and the spoiler includes a plurality of first spoiler structures, and two adjacent first spoiler structures are spaced apart.

2. The fuel cell electrode plate according to claim 1, characterized in that: Multiple first spoiler structures form multiple rows of spoiler structure rows, and the multiple rows of spoiler structure rows are arranged along the width direction of the electrode body. Any two adjacent rows of spoiler structure rows are separated, and each row of the spoiler structure rows includes multiple first spoiler structures, and the multiple first spoiler structures in each row of the spoiler structure rows are arranged along the length direction of the electrode body.

3. The fuel cell electrode plate according to claim 2, characterized in that: The spacing distance between at least two adjacent first spoiler structures is different from the spacing distance between any other adjacent two first spoiler structures.

4. The fuel cell electrode plate according to claim 3, characterized in that: In a direction from the cooling medium inlet to the main heat exchange flow channel, the spacing distances between the plurality of first flow spoiler structures in each row of the flow spoiler structures gradually increase.

5. The fuel cell electrode plate according to claim 2, characterized in that: From the cooling medium inlet to the main heat exchange flow channel, the spacing distance between at least two adjacent rows of the flow-disturbing structures gradually increases.

6. The fuel cell electrode plate according to claim 2, characterized in that: Each row of the spoiler structure rows has a midline extending along the length direction of the electrode body, and the multiple first spoiler structures in each row of the spoiler structure rows are symmetrical about the corresponding midline. The midline of each row of the spoiler structure rows forms an angle with the radial direction of the cooling medium inlet, and the midlines of at least two rows of the spoiler structure rows form different angles with the radial direction of the cooling medium inlet.

7. The fuel cell electrode plate according to claim 1, characterized in that: The first spoiler structure includes: a first main body and a second main body connected to each other, from the cooling medium inlet to the main heat exchange flow 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, and 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.

8. The fuel cell plate according to any one of claims 1 to 7, characterized in that: There are multiple main heat exchange channels, which are arranged along the width direction of the electrode plate body. At least one main heat exchange channel is provided with a second spoiler structure, which is fixed to the electrode plate body.

9. The fuel cell electrode plate according to claim 8, characterized in that: The plate body has a cooling medium flow space therein, and a plurality of partition walls are arranged in the cooling medium flow space. The partition walls extend along the length direction of the plate body, and the plurality of partition walls are sequentially spaced apart along the width direction of the plate body to divide the cooling medium flow space into a plurality of the main heat exchange channels.

10. The fuel cell plate according to any one of claims 1 to 7, characterized in that: A converging flow channel is also formed in the electrode plate body. The converging flow channel is located between the cooling medium outlet and the main heat exchange flow channel. The flow spoiler is provided in the converging flow channel.

11. A fuel cell, characterized in that: A fuel cell electrode plate comprising the fuel cell electrode according to any one of claims 1 to 10.

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