CN218957775U

CN218957775U - Air-cooled fuel cell polar plate structure

Info

Publication number: CN218957775U
Application number: CN202221967476.9U
Authority: CN
Inventors: 韩冬冬; 张虎程; 陈旭成; 窦少彬; 陈贵焕
Original assignee: Anhui Chengdong Technology Co ltd
Current assignee: Anhui Chengdong Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-05-02
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses an air-cooled fuel cell polar plate structure, which comprises a bipolar plate, wherein the top of the bipolar plate is provided with a mounting groove, a flow field plate is fixedly arranged in the mounting groove, the top of the flow field plate is provided with a plurality of flow path grooves which are distributed at equal intervals, the bipolar plate is provided with a heat conducting component, the heat conducting component comprises a heat conducting main plate, a plurality of heat conducting rods and a plurality of heat conducting fins, the bottom of the mounting groove is internally provided with a groove, the heat conducting main plate is fixedly arranged in the groove, the top of the heat conducting main plate is fixedly connected with the bottom of the flow field plate, and the heat conducting rods are fixedly arranged at the top of the heat conducting main plate. The utility model has reasonable design and good practicability, can increase the ventilation and heat dissipation area of the surface of the bipolar plate, can effectively transfer heat and dissipate heat inside the bipolar plate, improves the heat dissipation efficiency of the bipolar plate, further improves the heat dissipation capacity of the air-cooled fuel cell, and can meet the use requirement.

Description

Air-cooled fuel cell polar plate structure

Technical Field

The utility model relates to the technical field of air-cooled fuel cells, in particular to an air-cooled fuel cell polar plate structure.

Background

The air-cooled fuel cell is a chemical device for directly converting chemical energy of fuel into electric energy, and is an ideal energy utilization mode because the fuel cell is not limited by carnot cycle without heat engine process, and therefore has high energy conversion efficiency and no pollution. The bipolar plate is one of the core components of the air-cooled fuel cell, occupies a large part of the mass of the stack, and performs the functions of uniformly distributing the reaction gas, conducting the current, etc., because the bipolar plate functions to transport electrons to an external circuit (anode) and to flow from the outside to a catalyst (cathode), which requires the bipolar plate to have high electrical conductivity and the function of uniformly flowing the fuel and air.

However, in practical use, it is found that, due to the smaller ventilation and heat dissipation area of the bipolar plate surface of the air-cooled fuel cell, the air flow on the bipolar plate surface is poor, so that the heat dissipation capacity of the air-cooled fuel cell is lower, the heat dissipation effect of the air-cooled fuel cell is affected, and the use requirement cannot be met.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides an air-cooled fuel cell polar plate structure, which solves the problems that the ventilation and heat dissipation area of the surface of an air-cooled fuel cell bipolar plate is smaller, the air flow property of the surface of the bipolar plate is poor, the heat dissipation capacity of the air-cooled fuel cell is lower, and the heat dissipation effect of the air-cooled fuel cell is influenced.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an forced air cooling fuel cell polar plate structure, includes bipolar plate, the top of bipolar plate is opened and is provided with the mounting groove, and fixed mounting has the flow field board in the mounting groove, and a plurality of flow path slot have been seted up at the top of flow field board, and a plurality of flow path slot are equidistant the arranging, are provided with the heat conduction subassembly on the bipolar plate.

Preferably, the heat conduction assembly comprises a heat conduction main board, a plurality of heat conduction rods and a plurality of heat conduction fins, wherein the bottom of the installation groove is internally provided with a groove, the heat conduction main board is fixedly installed in the groove, the top of the heat conduction main board is fixedly connected with the bottom of the flow field plate, the plurality of heat conduction rods are fixedly installed at the top of the heat conduction main board, through holes are formed in the inner walls of the bottoms of the plurality of flow path grooves, the top ends of the plurality of heat conduction rods respectively penetrate through the corresponding through holes, and the plurality of heat conduction fins are fixedly installed at the bottom of the heat conduction main board.

Preferably, the plurality of heat conducting fins are arranged at equal intervals, and the plurality of heat conducting fins are embedded into the bipolar plate.

Preferably, two positioning columns are arranged at the bottom of the flow field plate, two positioning grooves are arranged on the inner wall of the top of the mounting groove, and the two positioning columns are respectively and fixedly arranged in the corresponding positioning grooves.

Preferably, four positioning holes are formed in the top of the bipolar plate, and the four positioning holes are symmetrically distributed in pairs.

Preferably, the width of the flow channel groove is 1-1.5mm, and the depth of the flow channel groove is 0.2-0.5mm.

(III) beneficial effects

The utility model provides an air-cooled fuel cell polar plate structure. The beneficial effects are as follows:

this an forced air cooling fuel cell polar plate structure through setting up the flow path slot that a plurality of equidistant were arranged, has increased the ventilation area of bipolar plate, can improve the heat dissipation capacity on bipolar plate surface, through utilizing the connection cooperation of heat conduction mainboard, a plurality of heat conduction pole and a plurality of heat conduction fin, can effectually dispel the heat to bipolar plate inside, and then can improve the radiating efficiency of bipolar plate, improves forced air cooling fuel cell's heat dissipation capacity, has solved bipolar plate's ventilation heat dissipation area less, and radiating efficiency is low, influences forced air cooling fuel cell radiating effect's problem.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the front view of the present utility model;

fig. 3 is an enlarged schematic view of the portion a in fig. 2.

In the figure: 1. a bipolar plate; 2. a flow field plate; 3. a mounting groove; 4. a flow channel groove; 5. a groove; 6. a heat conducting main board; 7. a heat conduction rod; 8. a heat conduction fin; 9. a through hole; 10. positioning columns; 11. a positioning groove; 12. and positioning holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model, and furthermore, in the description of the present utility model, the meaning of "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1-3, the present utility model provides a technical solution: the utility model provides an forced air cooling fuel cell polar plate structure, including bipolar plate 1, open at bipolar plate 1's top is provided with mounting groove 3, mounting groove 3 internal fixation has flow field plate 2, set up mounting groove 3, make things convenient for flow field plate 2's installation, a plurality of flow path slot 4 have been seted up at flow field plate 2's top, a plurality of flow path slot 4 are equidistant the arranging, through setting up a plurality of equidistant flow path slot 4 of arranging, bipolar plate 1's ventilation area has been increased, can improve bipolar plate 1 surface's heat dissipation capacity, be provided with heat conduction subassembly on the bipolar plate 1, through utilizing heat conduction subassembly, can pass out bipolar plate 1 inside heat transfer, can improve bipolar plate 1's radiating effect.

In this embodiment, the heat conduction subassembly includes heat conduction mainboard 6, a plurality of heat conduction pole 7 and a plurality of heat conduction fin 8, set up fluted 5 on the inside bottom of mounting groove 3, heat conduction mainboard 6 fixed mounting is in fluted 5, the top of heat conduction mainboard 6 and the bottom fixed connection of flow field plate 2, a plurality of heat conduction pole 7 equal fixed mounting are at the top of heat conduction mainboard 6, through-hole 9 has all been seted up on the bottom inner wall of a plurality of flow path slot 4, the top of a plurality of heat conduction pole 7 runs through corresponding through-hole 9 respectively, a plurality of heat conduction fin 8 equal fixed mounting is in the bottom of heat conduction mainboard 6, the improvement utilizes the connection cooperation of heat conduction mainboard 6, a plurality of heat conduction pole 7 and a plurality of heat conduction fin 8, can pass through bipolar plate 1 inside heat.

In this embodiment, the plurality of heat conducting fins 8 are arranged at equal intervals, and the plurality of heat conducting fins 8 are embedded into the bipolar plate 1, so that heat in the bipolar plate 1 can be transferred to the heat conducting main plate 6 by using the plurality of heat conducting fins 8 arranged at equal intervals.

In this embodiment, the heat conductive main board 6, the plurality of heat conductive rods 7 and the plurality of heat conductive fins 8 are made of any one of materials of alumina and silica with good heat conductivity.

In this embodiment, two positioning columns 10 are provided at the bottom of the flow field plate 2, two positioning grooves 11 are provided on the top inner wall of the mounting groove 3, the two positioning columns 10 are respectively and fixedly installed in the corresponding positioning grooves 11, and the two positioning columns 10 are respectively matched with the corresponding positioning grooves 11 in a plugging manner, so that the combined connection and fixation of the flow field plate 2 and the bipolar plate 1 can be initially positioned, and further the flow field plate 2 can be prevented from being installed in a deviated manner.

In this embodiment, four positioning holes 12 are formed in the top of the bipolar plate 1, the four positioning holes 12 are symmetrically arranged in pairs, and the bipolar plate 1 is conveniently assembled and fixed by arranging the four positioning holes 12 symmetrically arranged in pairs.

In this embodiment, the width of the flow channel groove 4 is 1 to 1.5mm, the depth of the flow channel groove 4 is 0.2 to 0.5mm, and smooth air flow from the inside of the flow channel groove 4 can be ensured by the flow channel groove 4.

When the bipolar plate is used, the ventilation area of the bipolar plate 1 is increased by arranging the flow channel grooves 4 which are distributed at equal intervals, heat on the surface of the bipolar plate 1 can be taken away by air flowing through the flow channel grooves 4, the heat dissipation capacity of the surface of the bipolar plate 1 is improved, heat inside the bipolar plate 1 can be transferred to the heat conducting main plate 6 by utilizing the heat conducting fins 8, the heat is transferred to the heat conducting rods 7 through the heat conducting main plate 6, the air flowing through the flow channel grooves 4 is contacted with the heat conducting rods 7, the heat on the heat conducting rods 7 can be taken away, the heat dissipation can be effectively carried out inside the bipolar plate 1 by utilizing the connection and the matching of the heat conducting main plate 6, the heat conducting rods 7 and the heat conducting fins 8, and then the heat dissipation efficiency of the bipolar plate 1 can be improved by matching the heat transfer and the heat dissipation capacity of the air-cooled fuel cell, and the heat dissipation capacity of the air-cooled fuel cell can be further improved, meanwhile, the heat dissipation efficiency of the bipolar plate 1 can be effectively improved, and the heat dissipation efficiency of the bipolar plate can be improved, and the heat dissipation efficiency of the heat dissipation device is improved.

In summary, the air-cooled fuel cell polar plate structure can increase the ventilation and heat dissipation area of the surface of the bipolar plate 1, and can effectively transfer heat and dissipate heat inside the bipolar plate 1, so that the heat dissipation efficiency of the bipolar plate 1 is improved, the heat dissipation capacity of the air-cooled fuel cell is improved, and the use requirement can be met.

Claims

1. An air-cooled fuel cell polar plate structure, includes bipolar plate (1), its characterized in that: the bipolar plate is characterized in that the top of the bipolar plate (1) is provided with a mounting groove (3), a flow field plate (2) is fixedly mounted in the mounting groove (3), the top of the flow field plate (2) is provided with a plurality of flow path grooves (4), the flow path grooves (4) are distributed at equal intervals, and the bipolar plate (1) is provided with a heat conducting component.

2. An air-cooled fuel cell plate structure according to claim 1, wherein: the heat conduction assembly comprises a heat conduction main board (6), a plurality of heat conduction rods (7) and a plurality of heat conduction fins (8), wherein a groove (5) is formed in the bottom of the installation groove (3), the heat conduction main board (6) is fixedly installed in the groove (5), the top of the heat conduction main board (6) is fixedly connected with the bottom of the flow field plate (2), the heat conduction rods (7) are fixedly installed at the top of the heat conduction main board (6), through holes (9) are formed in the inner wall of the bottom of the flow path groove (4), the top ends of the heat conduction rods (7) penetrate through the corresponding through holes (9) respectively, and the heat conduction fins (8) are fixedly installed at the bottom of the heat conduction main board (6).

3. An air-cooled fuel cell plate structure according to claim 2, wherein: the heat conducting fins (8) are distributed at equal intervals, and the heat conducting fins (8) are embedded into the bipolar plate (1).

4. An air-cooled fuel cell plate structure according to claim 1, wherein: two positioning columns (10) are arranged at the bottom of the flow field plate (2), two positioning grooves (11) are arranged on the inner wall of the top of the mounting groove (3), and the two positioning columns (10) are respectively and fixedly arranged in the corresponding positioning grooves (11).

5. An air-cooled fuel cell plate structure according to claim 1, wherein: four locating holes (12) are formed in the top of the bipolar plate (1), and the four locating holes (12) are symmetrically distributed in pairs.

6. An air-cooled fuel cell plate structure according to claim 1, wherein: the width of the flow channel groove (4) is 1-1.5mm, and the depth of the flow channel groove (4) is 0.2-0.5mm.