Parallel fuel cell

Abstract

The utility model discloses a parallel fuel cell. Comprising a plurality of battery packs which are arranged side by side, end plates which are respectively arranged at two ends of the battery packs, positive collector plates and negative collector plates which are respectively positioned between the end plates and the battery packs, membrane electrodes which are arranged on the battery packs, bipolar plates which are arranged on the battery packs, and overcurrent collector plates which are arranged between the battery packs at two adjacent sides, the positive collector plate and the negative collector plate are respectively located at two ends of the battery pack, the end plates are respectively provided with an air circulation assembly, a hydrogen circulation assembly and a cooling water circulation assembly which are communicated with the battery pack, and each battery pack respectively corresponds to one group of air circulation assembly, one group of hydrogen circulation assembly and one group of cooling water circulation assembly. The double-row or multi-row parallel layout is adopted, so that the fuel cell is more flexibly suitable for different space distributions, the space in the length direction of the whole fuel cell is reduced, meanwhile, the number of gas inlets and outlets is increased, and the situation that the inlet and outlet gas flow of a traditional hydrogen fuel cell is insufficient is improved; and the fuel cell is suitable for more space application scenes and saturated gas flux.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cells, in particular to a parallel fuel cell. Background Art

[0002] A hydrogen fuel cell is a chemical device that converts the chemical energy of fuel directly into electrical energy. Hydrogen fuel cells use hydrogen and oxygen as raw materials and have no mechanical transmission parts. The chemical product of the reaction is pure water, so it does not emit any harmful gases and has a long service life.

[0003] However, traditional hydrogen fuel cells are arranged in series, with a single spatial expansion direction and a single air inlet and outlet, which can easily cause insufficient air inlet and outlet flow, thus affecting the consistent performance of the electrochemical performance of the hydrogen fuel cell. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a parallel fuel cell.

[0005] The utility model solves the above-mentioned technical problem with the following technical solution: a parallel fuel cell, comprising a plurality of battery packs arranged side by side, end plates respectively arranged at both ends of the battery packs, a positive current collecting plate located at the positive end of the battery pack, a negative current collecting plate located at the negative end of the battery pack, a bipolar plate arranged on the battery pack, a flow collecting plate arranged between adjacent battery packs, and a membrane electrode located on both sides of adjacent bipolar plates, the positive current collecting plate and the negative current collecting plate are respectively located at the two ends of the battery pack, and air circulation components, hydrogen circulation components and cooling water circulation components connected to the battery packs are respectively arranged on the end plates, and each battery pack corresponds to one group of air circulation components, one group of hydrogen circulation components and one group of cooling water circulation components.

[0006] Furthermore, the air circulation component includes an air inlet arranged above the end plate and an air outlet arranged below the end plate and corresponding to the air inlet, and the air inlet, the space inside the battery pack, and the air outlet form an air circulation channel.

[0007] Furthermore, the cooling water circulation assembly includes a cooling water inlet arranged above the end plate and a cooling water outlet arranged below the end plate and corresponding to the cooling water inlet. The cooling water inlet, the internal space of the battery pack, and the cooling water outlet form a circulation channel for cooling water.

[0008] Furthermore, the hydrogen circulation component includes a hydrogen inlet arranged above the end plate and a hydrogen outlet arranged below the end plate and corresponding to the hydrogen inlet. The hydrogen inlet, the internal space of the battery pack, and the hydrogen outlet form a circulation channel for hydrogen.

[0009] Furthermore, an aluminum column is arranged on the end surface of the end plate.

[0010] Furthermore, membrane electrodes are arranged on both sides of adjacent bipolar plates.

[0011] The utility model has the following beneficial effects: the utility model provides a parallel fuel cell with a reliable structure and adopts a double-row or multi-row parallel layout, which is more flexibly applicable to different spatial distributions, reducing the space in the entire length direction of the fuel cell, while increasing the number of gas inlets and outlets, greatly improving the situation of insufficient inlet and outlet gas flow of traditional hydrogen fuel cells, making the fuel cell suitable for more spatial application scenarios and saturated gas flux; in addition, the cooling water circulation helps to improve the temperature consistency of the hydrogen fuel cell during operation, avoiding the impact of excessive temperature or temperature difference on the performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a double-row structure of the fuel cell in the utility model;

[0013] Figure 2 This is an exploded schematic diagram of a double-row structure of a fuel cell in the utility model;

[0014] Figure 3 This is a schematic diagram of a three-row structure of the fuel cell in the utility model;

[0015] Figure 4 The fuel cell in the utility model adopts a three-row structure to show the explosion intention;

[0016] Figures 1 to 4 The reference numerals shown in the figure represent respectively: 1-battery pack, 2-end plate, 3-positive current collecting plate, 4-negative current collecting plate, 5-bipolar plate, 6-current collecting plate, 7-air inlet, 8-air outlet, 9-cooling water inlet, 10-cooling water outlet, 11-hydrogen inlet, 12-hydrogen outlet, 13-aluminum column, 14-membrane electrode. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0018] like Figures 1 to 4As shown, a parallel fuel cell comprises a plurality of battery packs 1 arranged in parallel, end plates 2 respectively arranged at both ends of the battery packs 1, a positive current collector 3 located at the positive end of the battery pack 1, a negative current collector 4 located at the negative end of the battery pack 1, a bipolar plate 5 arranged on the battery pack 1, and a flow collector 6 arranged between two adjacent battery packs 1. The end plates 2 are also respectively provided with a hydrogen inlet 11 and a hydrogen outlet 12; an aluminum column 13 is provided on the upper end surface of the end plate 2, and membrane electrodes 14 are provided on both sides of the bipolar plate 5. The battery packs 1 have at least two rows, and a double-row or multi-row parallel layout is adopted, which is more flexible to adapt to different spatial distributions and reduces the space in the length direction of the entire fuel cell.

[0019] The positive electrode current collecting plate 3 and the negative electrode current collecting plate 4 are respectively located at the two ends of the battery pack 1, and the end plate 2 is respectively provided with an air circulation component, a hydrogen circulation component and a cooling water circulation component connected to the battery pack 1. Each group of battery packs 1 corresponds to a group of air circulation components, a group of hydrogen circulation components and a group of cooling water circulation components. The number of air circulation components, hydrogen circulation components and cooling water circulation components corresponds to the number of fuel cells. In the structure of the fuel cell, the increase in the number of gas inlets and outlets greatly improves the situation of insufficient inlet and outlet gas flow of traditional hydrogen fuel cells, increases the inlet and outlet gas flow, and makes the fuel cell suitable for more space application scenarios and saturated gas flux. In addition, the cooling water circulation helps to improve the temperature consistency during the operation of the hydrogen fuel cell and avoid the influence of excessive temperature or temperature difference on the performance.

[0020] The air circulation assembly includes an air inlet 7 disposed above the end plate 2 and an air outlet 8 disposed below the end plate 2 and corresponding to the air inlet 7. The air inlet 7, the space inside the battery pack 1, and the air outlet 8 form an air circulation channel. Air enters through the air inlet 7, and the air inside the battery pack is discharged through the air outlet 8.

[0021] The cooling water circulation assembly includes a cooling water inlet 9 disposed above the end plate 2 and a cooling water outlet 10 disposed below the end plate 2 and corresponding to the cooling water inlet 9. The cooling water inlet 9, the internal space of the battery pack 1, and the cooling water outlet 10 form a cooling water circulation channel. The cooling water enters from the cooling water inlet, and the cooling water after cooling is discharged from the cooling water outlet 10.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A parallel fuel cell, characterized in that: The invention comprises a plurality of battery packs (1) arranged side by side, end plates (2) respectively arranged at both ends of the battery packs (1), a positive current collecting plate (3) located at the positive end of the battery packs (1), a negative current collecting plate (4) located at the negative end of the battery packs (1), a bipolar plate (5) arranged on the battery packs (1), and a current-passing collecting plate (6) arranged between the battery packs (1) on two adjacent sides, wherein the positive current collecting plate (3) and the negative current collecting plate (4) are respectively located at both ends of the battery packs (1), and the end plates (2) are respectively provided with air circulation components, hydrogen circulation components and cooling water circulation components connected to the battery packs (1), and each group of the battery packs (1) corresponds to one group of air circulation components, one group of hydrogen circulation components and one group of cooling water circulation components.

2. The parallel fuel cell according to claim 1, characterized in that: The air circulation component comprises an air inlet (7) arranged above the end plate (2) and an air outlet (8) arranged below the end plate (2) and corresponding to the air inlet (7); the air inlet (7), the space inside the battery pack (1), and the air outlet (8) form an air circulation channel.

3. The parallel fuel cell according to claim 1, characterized in that: The cooling water circulation assembly comprises a cooling water inlet (9) arranged above the end plate (2) and a cooling water outlet (10) arranged below the end plate (2) and corresponding to the cooling water inlet (9); the cooling water inlet (9), the internal space of the battery pack (1), and the cooling water outlet (10) form a circulation channel for cooling water.

4. The parallel fuel cell according to any one of claims 1 to 3, characterized in that: The hydrogen circulation component comprises a hydrogen inlet (11) arranged above the end plate (2) and a hydrogen outlet (12) arranged below the end plate (2) and corresponding to the hydrogen inlet (11); the hydrogen inlet (11), the internal space of the battery pack (1), and the hydrogen outlet (12) form a circulation channel for hydrogen.

5. The parallel fuel cell according to claim 4, characterized in that: An aluminum column (13) is provided on the upper end surface of the end plate (2), and membrane electrodes (14) are provided on adjacent two sides of the bipolar plate (5).

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