Fuel cell bipolar plate assembly

Abstract

The utility model discloses a fuel cell bipolar plate assembly, including anode plate, cathode plate and be located anode plate, cathode plate between air cooling board, anode plate and air cooling board opposite surface is equipped with a plurality of first groove, and the adjacent first groove is separated through first ridge strip, a first metal pad, second metal pad are arranged in air cooling board length direction's both ends respectively, first metal pad, second metal pad are located air cooling board with anode plate or cathode plate between, and first metal pad, second metal pad have first pin, second pin respectively, first metal pad and anode plate, cathode plate are connected through first carbon paper, second carbon paper respectively, and second metal pad and anode plate, cathode plate are connected through third carbon paper, fourth carbon paper respectively. The utility model discloses fuel cell bipolar plate assembly is convenient for timely understanding the performance of fuel cell, thereby is convenient for monitoring and maintenance, also has improved power generation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, and in particular to a fuel cell bipolar plate assembly. Background Technology

[0002] A hydrogen fuel cell is an electrochemical power generation device that converts chemical energy into electrical energy. A single cell consists of electrodes, a membrane electrode assembly (MEA), and corresponding sealing components. Hydrogen gas flows through channels in the electrodes, undergoing oxidation on one side of the MEA and reduction on the other. This process creates an external circuit with electron flow, generating electricity. The entire process is pollution-free, emission-free, and produces only water as a byproduct, making it a clean energy conversion device. Therefore, it has received considerable attention and become a research hotspot in various countries, and is now widely used. The bipolar plate assembly is a crucial component of the fuel cell, playing a role in current collection, gas distribution, MEA support, water management, and thermal management. Current bipolar plate assemblies need improvement in terms of power generation efficiency and performance monitoring in hydrogen fuel cells. Summary of the Invention

[0003] The purpose of this invention is to provide a fuel cell bipolar plate assembly that facilitates timely understanding of fuel cell performance, thereby simplifying monitoring and maintenance, and also improves power generation efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a fuel cell bipolar plate assembly, including an anode plate, a cathode plate, and an air cooling plate located between the anode plate and the cathode plate. Each of the anode plate and the cathode plate has a hydrogen inlet and a reaction air inlet at one end, and a hydrogen outlet and a reaction air outlet at the other end. The air cooling plate has a cooling air inlet on one side and a cooling air outlet on the other side. The anode plate has a plurality of first grooves on the surface opposite to the air cooling plate, and adjacent first grooves are separated by first ridges. The cathode plate has a plurality of second grooves on the surface opposite to the air cooling plate, and adjacent second grooves are separated by second ridges. A first metal pad and a second metal pad are respectively disposed at both ends of the air cooling plate along its length. The first metal pad and the second metal pad are located between the air cooling plate and the anode plate or the cathode plate, and the first metal pad and the second metal pad have a first lead and a second lead, respectively. The first metal pad is connected to the anode plate and the cathode plate through a first carbon paper and a second carbon paper, respectively, and the second metal pad is connected to the anode plate and the cathode plate through a third carbon paper and a fourth carbon paper, respectively.

[0005] The following are further improvements to the above technical solution: 1. In the above scheme, the first metal pad and the second metal pad are located between the air cooling plate and the anode plate.

[0006] 2. In the above scheme, the first pin and the second pin are arranged diagonally.

[0007] 3. In the above scheme, the first pin is located in the region of the first metal pad near the reaction air inlet, and the second pin is located in the region of the second metal pad near the reaction air outlet.

[0008] 4. In the above scheme, the opening of the reaction air inlet is larger than the opening of the hydrogen inlet, and the opening of the reaction air outlet is larger than the opening of the hydrogen outlet.

[0009] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model relates to a fuel cell bipolar plate assembly, in which a first metal pad and a second metal pad are respectively disposed at both ends of the air cooling plate along its length. The first metal pad and the second metal pad are located between the air cooling plate and the anode plate or cathode plate, and the first metal pad and the second metal pad are respectively provided with a first pin and a second pin, which can be used to detect the battery performance, making it convenient to understand the performance of the fuel cell in a timely manner, thereby facilitating monitoring and maintenance. In addition, the first metal pad is connected to the anode plate and the cathode plate respectively through a first carbon paper and a second carbon paper, and the second metal pad is connected to the anode plate and the cathode plate respectively through a third carbon paper and a fourth carbon paper, which reduces the contact resistance between the anode plate, the air cooling plate and the cathode plate, and improves the power generation efficiency. Attached Figure Description

[0010] Appendix Figure 1 This is a top view of the bipolar plate assembly of the fuel cell of this utility model. Appendix Figure 2 This is a bottom view of the bipolar plate assembly of the fuel cell of this utility model. Appendix Figure 3 This is an exploded structural diagram of the fuel cell bipolar plate assembly of this utility model.

[0011] In the above figures: 1. Anode plate; 2. Cathode plate; 3. Air cooling plate; 41. Hydrogen inlet; 42. Hydrogen outlet; 51. Reactant air inlet; 52. Reactant air outlet; 61. Cooling air inlet; 62. Cooling air outlet; 71. First trench; 72. First ridge; 81. Second trench; 82. Second ridge; 91. First metal pad; 92. Second metal pad; 101. First pin; 102. Second pin; 111. First carbon paper; 112. Second carbon paper; 121. Third carbon paper; 122. Fourth carbon paper. Detailed Implementation

[0012] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0013] Example 1: A fuel cell bipolar plate assembly includes an anode plate 1, a cathode plate 2, and an air cooling plate 3 located between the anode plate 1 and the cathode plate 2. Each of the anode plate 1 and the cathode plate 2 has a hydrogen inlet 41 and a reaction air inlet 51 at one end, and a hydrogen outlet 42 and a reaction air outlet 52 at the other end. The air cooling plate 3 has a cooling air inlet 61 on one side and a cooling air outlet 62 on the other side. The surface of the anode plate 1 opposite to the air cooling plate 3 is provided with a plurality of first grooves 71, and adjacent first grooves 71 are separated by first ridges 72. The surface of the cathode plate 2 opposite to the air cooling plate 3 is provided with a plurality of second grooves 81, and adjacent second grooves 81 are separated by second ridges 82. A first metal pad 91 and a second metal pad 92 are respectively disposed at both ends of the air cooling plate 3 along the length direction. The first metal pad 91 and the second metal pad 92 are located between the air cooling plate 3 and the anode plate 1 or the cathode plate 2, and the first metal pad 91 and the second metal pad 92 have a first pin 101 and a second pin 102, respectively. The first metal pad 91 is connected to the anode plate 1 and the cathode plate 2 through a first carbon paper 111 and a second carbon paper 112, respectively. The second metal pad 92 is connected to the anode plate 1 and the cathode plate 2 through a third carbon paper 121 and a fourth carbon paper 122, respectively.

[0014] The first metal pad 91 and the second metal pad 92 are located between the air cooling plate 3 and the anode plate 1.

[0015] The first pin 101 and the second pin 102 are arranged diagonally.

[0016] The first pin 101 is located in the region of the first metal pad 91 near the reaction air inlet 51, and the second pin 102 is located in the region of the second metal pad 92 near the reaction air outlet 52.

[0017] The opening of the reaction air inlet 51 is larger than the opening of the hydrogen inlet 41, and the opening of the reaction air outlet 52 is larger than the opening of the hydrogen outlet 42.

[0018] Example 2: A fuel cell bipolar plate assembly includes an anode plate 1, a cathode plate 2, and an air cooling plate 3 located between the anode plate 1 and the cathode plate 2. Each of the anode plate 1 and the cathode plate 2 has a hydrogen inlet 41 and a reaction air inlet 51 at one end, and a hydrogen outlet 42 and a reaction air outlet 52 at the other end. The air cooling plate 3 has a cooling air inlet 61 on one side and a cooling air outlet 62 on the other side. The surface of the anode plate 1 opposite to the air cooling plate 3 is provided with a plurality of first grooves 71, and adjacent first grooves 71 are separated by first ridges 72. The surface of the cathode plate 2 opposite to the air cooling plate 3 is provided with a plurality of second grooves 81, and adjacent second grooves 81 are separated by second ridges 82. A first metal pad 91 and a second metal pad 92 are respectively disposed at both ends of the air cooling plate 3 along the length direction. The first metal pad 91 and the second metal pad 92 are located between the air cooling plate 3 and the anode plate 1 or the cathode plate 2, and the first metal pad 91 and the second metal pad 92 have a first pin 101 and a second pin 102, respectively. The first metal pad 91 is connected to the anode plate 1 and the cathode plate 2 through a first carbon paper 111 and a second carbon paper 112, respectively. The second metal pad 92 is connected to the anode plate 1 and the cathode plate 2 through a third carbon paper 121 and a fourth carbon paper 122, respectively.

[0019] The first metal pad 91 and the second metal pad 92 are located between the air cooling plate 3 and the anode plate 1.

[0020] The first pin 101 and the second pin 102 are arranged diagonally.

[0021] The first pin 101 is located in the region of the first metal pad 91 near the reaction air inlet 51, and the second pin 102 is located in the region of the second metal pad 92 near the reaction air outlet 52.

[0022] The opening of the reaction air inlet 51 is larger than the opening of the hydrogen inlet 41, and the opening of the reaction air outlet 52 is larger than the opening of the hydrogen outlet 42.

[0023] When the above-mentioned fuel cell bipolar plate assembly is used, the first metal pad 91 and the second metal pad 92 are respectively disposed at both ends of the air cooling plate 3 along the length direction. The first metal pad 91 and the second metal pad 92 are located between the air cooling plate 3 and the anode plate 1 or the cathode plate 2. The first metal pad 91 and the second metal pad 92 have a first pin 101 and a second pin 102 respectively. The battery performance can be detected through the first pin and the second pin, which makes it convenient to understand the performance of the fuel cell in a timely manner, thereby facilitating monitoring and maintenance. Furthermore, the first metal pad 91 is connected to the anode plate 1 and the cathode plate 2 respectively through the first carbon paper 111 and the second carbon paper 112, and the second metal pad 92 is connected to the anode plate 1 and the cathode plate 2 respectively through the third carbon paper 121 and the fourth carbon paper 122, which reduces the contact resistance between the anode plate 1, the air cooling plate 3 and the cathode plate 2 and improves the power generation efficiency.

[0024] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fuel cell bipolar plate assembly, comprising an anode plate (1), a cathode plate (2), and an air cooling plate (3) located between the anode plate (1) and the cathode plate (2), characterized in that: The anode plate (1) and cathode plate (2) each have a hydrogen inlet (41) and a reaction air inlet (51) at one end, and a hydrogen outlet (42) and a reaction air outlet (52) at the other end. The air cooling plate (3) has a cooling air inlet (61) on one side and a cooling air outlet (62) on the other side. The anode plate (1) has a plurality of first grooves (71) on the surface opposite to the air cooling plate (3), and adjacent first grooves (71) are separated by first ridges (72). The cathode plate (2) has a plurality of second grooves (81) on the surface opposite to the air cooling plate (3), and adjacent second grooves (81) are separated by second ridges (82). A first metal pad (91) and a second metal pad (92) are respectively disposed at both ends of the air cooling plate (3) along the length direction. The first metal pad (91) and the second metal pad (92) are located between the air cooling plate (3) and the anode plate (1) or the cathode plate (2). The first metal pad (91) and the second metal pad (92) have a first pin (101) and a second pin (102) respectively. The first metal pad (91) is connected to the anode plate (1) and the cathode plate (2) respectively through a first carbon paper (111) and a second carbon paper (112). The second metal pad (92) is connected to the anode plate (1) and the cathode plate (2) respectively through a third carbon paper (121) and a fourth carbon paper (122).

2. The fuel cell bipolar plate assembly according to claim 1, characterized in that: The first metal pad (91) and the second metal pad (92) are located between the air cooling plate (3) and the anode plate (1).

3. The fuel cell bipolar plate assembly according to claim 1, characterized in that: The first pin (101) and the second pin (102) are arranged diagonally.

4. The fuel cell bipolar plate assembly according to claim 1, characterized in that: The first pin (101) is located in the region of the first metal pad (91) near the reaction air inlet (51), and the second pin (102) is located in the region of the second metal pad (92) near the reaction air outlet (52).

5. The fuel cell bipolar plate assembly according to claim 1 or 2, characterized in that: The opening of the reaction air inlet (51) is larger than the opening of the hydrogen inlet (41), and the opening of the reaction air outlet (52) is larger than the opening of the hydrogen outlet (42).

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