Fuel cell manifold structure integrated with water segregator

Abstract

The utility model relates to the field of fuel cells, in particular to a fuel cell manifold structure of an integrated water segregator, which comprises a manifold, the water segregator is arranged on the manifold, a hydrogen outlet in the manifold is communicated with an inner cavity of the water segregator, and an outlet and a connector are arranged at the top of the water segregator; the filter plate is arranged in the inner cavity of the water separator, a water storage area is formed below the filter plate, and a water separation area is formed above the filter plate; the baffle plate is arranged in the inner cavity of the water segregator and is positioned above the filter plate; and the cover plate is arranged on the water segregator and is used for sealing the inner cavity of the water segregator. The water segregator is integrated on the manifold, so that the integration level of the manifold is improved, the arrangement of a fuel cell engine is designed and optimized, and the whole engine is more compact. The water segregator is close to the manifold hydrogen outlet, and the volume of the water segregator and the baffle structure are reasonably designed, so that the water segregation efficiency of the water segregator is improved, and the galvanic pile performance is improved. The water knockout drum is integrated on the manifold, so that independent purchase of the water knockout drum is avoided, the cost is reduced, and meanwhile, the assembly is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fuel cell, especially to a fuel cell manifold structure integrated with a water segregator. BACKGROUND

[0002] The hydrogen fuel cell system has the advantages of zero emission and fast hydrogen addition, can effectively solve the problems of long charging time and short cruising range of lithium battery, and is a new energy automobile power system with broad development prospect. The hydrogen fuel cell system is usually composed of a stack, a hydrogen system, an air system, a heat management system, a control system and the like. The stack is a core component of the fuel cell system, and the mechanical interfaces of the hydrogen system, the air system and the heat management system are integrated on the interface of the stack. One stack generally has three cavities, i.e. a cathode cavity, an anode cavity and a cooling cavity. The flow media of the three cavities are air, hydrogen and cooling liquid respectively. The three cavities correspond to the cathode inlet and outlet, the anode inlet and outlet and the cooling liquid inlet and outlet respectively. Therefore, one stack has six interfaces, i.e. three inlets and three outlets. In addition, the core of the design and development of the fuel cell system is to optimize the water management inside the stack. Water is generated during the electrochemical reaction of the fuel cell. Part of the generated water enters the cathode flow channel through the microporous layer and the diffusion layer. Some water also penetrates to the anode side of the membrane. When the electrochemical reaction occurs, the movement of hydrogen ions on the anode side will drag part of the water from the anode to the cathode. In addition, the system also controls the inlet humidity of the fuel cell reaction gas and the water discharge. Reasonable water management is maintained inside the system to keep the water content in the membrane within a reasonable range to prevent liquid water in the stack components from hindering the diffusion of the reaction gas. In order to control the water content in the anode hydrogen, a water segregator is usually used to separate the water in the hydrogen. The water segregator mainly utilizes the different specific gravities of gas and liquid during fluid diversion to separate the liquid from the gas. The main fluid can be diverted by using a baffle, or the centrifugal separation effect can be used to separate the liquid from the gas by using high-speed airflow to throw the liquid onto the container wall. After losing kinetic energy, the liquid is separated from the gas. Some use filters or condensers to separate gas and liquid. On the fuel cell engine, a water segregator is usually installed additionally, which not only increases the cost, but also reduces the integration of the engine and increases the risk of leakage. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at the problem of installing a water segregator on the fuel cell engine in the background art, which not only increases the cost, but also reduces the integration of the engine and increases the risk of leakage, and proposes a fuel cell manifold structure integrated with a water segregator.

[0004] The technical scheme of the utility model: a fuel cell manifold structure integrated with a water segregator, comprising:

[0005] a manifold;

[0006] A water distributor is arranged on the manifold, the hydrogen outlet on the manifold is communicated with the inner cavity of the water distributor, and the top of the water distributor is provided with an outlet and a connector;

[0007] A filter plate is arranged in the inner cavity of the water distributor, and a water storage area is formed below the filter plate and a water distribution area is formed above the filter plate;

[0008] A baffle plate is arranged in the inner cavity of the water distributor and above the filter plate;

[0009] And a cover plate is arranged on the water distributor to seal the inner cavity of the water distributor.

[0010] Preferably, the baffle plate is arranged in multiple and is arranged at different positions.

[0011] Preferably, three baffle plates are arranged side by side, and the three baffle plates are arranged alternately left and right.

[0012] Preferably, the baffle plate makes the hydrogen flow change direction, and realizes gas-liquid separation by using the different specific gravities of gas and liquid.

[0013] Preferably, the filter plate separates the water in the water storage area from the hydrogen in the water distribution area, so as to prevent the water in the water storage area from being taken out by the hydrogen.

[0014] Compared with the prior art, the utility model has the beneficial technical effects that:

[0015] 1. The water distributor is integrated on the manifold, the integration degree of the manifold is improved, the outlet and the connecting connector of the water distributor on the manifold are reasonably arranged, the water distributor can be better connected with other BOP parts, the fuel cell engine layout is optimized, and the engine is more compact as a whole.

[0016] 2. The water distributor is arranged close to the hydrogen outlet of the manifold, the water distribution efficiency of the water distributor is improved by reasonably designing the volume and the baffle structure of the water distributor, and the performance of the electric pile is improved.

[0017] 3. The water distributor is integrated on the manifold, the separate purchase of the water distributor is avoided, the cost is reduced, and the assembly is also simplified. DETAILED DESCRIPTION

[0018] Figure 1 It is a structural schematic view of an embodiment of the utility model;

[0019] Figure 2 It is a front view of Figure 1

[0020] Figure 3 It is a structural schematic view of the water distributor without the cover plate. Figure 2

[0021] Mark: 1, manifold; 2, water distributor; 3, hydrogen outlet; 4, baffle plate; 5, water storage area; 6, filter plate; 7, outlet; 8, connector; 9, cover plate.​​ DETAILED DESCRIPTION

[0022] As Figures 1-3 shown, the utility model provides a fuel cell manifold structure of integrated water distributor, include:

[0023] Manifold 1;

[0024] Distributor 2 set up on manifold 1, hydrogen export 3 on manifold 1 is communicated with the inner chamber of distributor 2, and the top of distributor 2 sets export 7 and joint 8, export 7 connects eductor, and joint 8 connects hydrogen pump;

[0025] Filter plate 6 sets up in the inner chamber of distributor 2, and the water storage area 5 is formed below filter plate 6, and the water distribution area is formed above, and the communicated point of hydrogen export 3 with the inner chamber of distributor 2 is located above filter plate 6, and filter plate 6 separates water of water storage area 5 and hydrogen of water distribution area, to prevent water of water storage area 5 from being carried out by hydrogen;

[0026] Baffle 4 sets up in the inner chamber of distributor 2 and is located above filter plate 6, baffle 4 sets up multiple, and baffle 4 distribution position is different, in the utility model, three baffle 4 are side by side arranged, and three baffle 4 are left and right staggered sequentially, and baffle 4 makes hydrogen flow diversion, utilizes the difference of gas-liquid specific gravity, realizes gas-liquid separation;

[0027] And cover plate 9 sets up on distributor 2 and is used to seal the inner chamber of distributor 2.

[0028] In the utility model, the upside of water distributor designs export 7, and the export connects eductor, and joint 8 connects hydrogen pump, realizes the recycling of hydrogen, to realize the sealing of distributor 2, designs cover plate 9 to seal, to realize the integrated design of manifold 1 and distributor 2, increases the water distribution efficiency of distributor 2, and reasonably arranges distributor 2 in limited space, need not be connected with distributor 2, makes the engine system design more compact, reduces assembly process, also reduces cost.

[0029] The embodiment of the utility model is described in detail in the above in connection with the drawings, but the utility model is not limited to this, in the knowledge range of the person skilled in the art, still can make various changes on the premise of not departing from the utility model's purpose.

Claims

1. A fuel cell manifold structure with an integrated water distributor, characterized in that, include: Manifold (1); A water separator (2) is installed on a manifold (1). The hydrogen outlet (3) on the manifold (1) is connected to the inner cavity of the water separator (2). An outlet (7) and a connector (8) are provided on the top of the water separator (2). A filter plate (6) is installed in the inner cavity of the water distributor (2). A water storage area (5) is formed below the filter plate (6), and a water distribution area is formed above it. Baffle (4) is installed inside the water distributor (2) and above the filter plate (6); And a cover plate (9) is provided on the water distributor (2) to seal the inner cavity of the water distributor (2).

2. The fuel cell manifold structure with an integrated water distributor according to claim 1, characterized in that, Multiple baffles (4) are provided, and the baffles (4) are distributed in different positions.

3. The fuel cell manifold structure with an integrated water distributor according to claim 2, characterized in that, Three baffles (4) are arranged side by side, and the three baffles (4) are arranged alternately on the left and right.

4. The fuel cell manifold structure with an integrated water distributor according to claim 2, characterized in that, The baffle (4) causes the hydrogen flow to change direction, and gas-liquid separation is achieved by utilizing the difference in specific gravity between gas and liquid.

5. The fuel cell manifold structure with an integrated water distributor according to claim 1, characterized in that, The filter plate (6) separates the water in the water storage area (5) from the hydrogen in the water distribution area, preventing the water in the water storage area (5) from being carried out by the hydrogen.

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