阅读说明：本技术 一种燃料电池金属双极板分区域流道 (Fuel cell metal bipolar plate regional flow channel ) 是由 任杰 郭亚卿 鲍连福 于 2021-07-16 设计创作，主要内容包括：本申请涉及一种燃料电池金属双极板分区域流道,其包括开设在两极板相互靠近的侧壁的嵌槽,嵌槽内固定连接有隔板,隔板设置有两块,两块隔板相互平行,且隔板与极板垂直固定连接,隔板将极板沿其长度方向依次分成第一反应区、第二反应区和第三反应区；第二反应区连通第一反应区和第三反应区；第一反应区内设置有第一导流组件；第二反应区内设置有第二导流组件,第三反应区内设置有第三导流组件,本申请具有提高反应气体反应充分性的效果。(The application relates to a fuel cell metal bipolar plate regional flow channel, which comprises an embedded groove formed in the side wall of two polar plates close to each other, wherein two partition plates are fixedly connected in the embedded groove, are parallel to each other and are vertically and fixedly connected with the polar plates, and divide the polar plates into a first reaction zone, a second reaction zone and a third reaction zone along the length direction of the polar plates in sequence; the second reaction zone is communicated with the first reaction zone and the third reaction zone; a first flow guide assembly is arranged in the first reaction zone; be provided with second water conservancy diversion subassembly in the second reaction zone, be provided with third water conservancy diversion subassembly in the third reaction zone, this application has the effect that improves reaction gas reaction sufficiency.)

1. A fuel cell metal bipolar plate zoned flow channel is characterized in that: the device comprises caulking grooves (11) formed in the side walls, close to each other, of two polar plates (1), wherein two partition plates (2) are fixedly connected in the caulking grooves (11), the two partition plates (2) are parallel to each other, the partition plates (2) are vertically and fixedly connected with the polar plates (1), and the polar plates (1) are sequentially divided into a first reaction zone (3), a second reaction zone (4) and a third reaction zone (5) along the length direction of the polar plates (1) by the partition plates (2); the second reaction zone (4) is communicated with the first reaction zone (3) and the third reaction zone (5); a first flow guide assembly (6) is arranged in the first reaction zone (3); a second diversion assembly (7) is arranged in the second reaction zone (4), and a third diversion assembly (8) is arranged in the third reaction zone (5).

2. The fuel cell metallic bipolar plate zoned flow channel of claim 1, wherein: the first flow guide assembly (6) comprises a first flow guide plate (61) and a collecting and accommodating plate (62); the first guide plate (61) is fixedly connected in the caulking groove (11), and the length direction of the first guide plate (61) is the same as that of the pole plate (1); the first guide plates (61) are arranged in a plurality, and the first guide plates (61) are distributed at equal intervals along the width direction of the pole plate (1); the collecting plate (62) is positioned at one end of the first guide plate (61) close to the second reaction zone (4), and the collecting plate (62) is fixedly connected with the polar plate (1).

3. The fuel cell metallic bipolar plate zoned flow channel of claim 2, wherein: the collecting plate (62) is close to the side wall of the first guide plate (61), and inclines towards one side close to the second reaction zone (4) gradually from one side close to the side wall of the polar plate (1) in the length direction to one side far away from the side wall of the polar plate (1) in the length direction.

4. The fuel cell metallic bipolar plate zoned flow channel of claim 1, wherein: the second flow guide assembly (7) comprises a plurality of flow guide rods (71) and a connecting rod (72), the length direction of the flow guide rods (71) is the same as the width direction of the pole plate (1), the flow guide rods (71) are distributed at equal intervals along the length direction of the pole plate (1), and the flow guide rods (71) are sequentially connected end to end through the connecting rod (72) to form the second flow guide assembly (7); the second flow guide assemblies (7) are arranged in two groups, and the two groups of second flow guide assemblies (7) are parallel to each other.

5. The fuel cell metallic bipolar plate zoned flow channel of claim 1, wherein: the third flow guide assembly (8) comprises a stop plate (81) and a third flow guide plate (82), the stop plate (81) is vertically and fixedly connected with the polar plate (1), and the stop plate (81) is vertically and fixedly connected with the partition plate (2); third guide plate (82) fixed connection is in caulking groove (11), and the one end fixed connection of baffle (2) is kept away from with backstop board (81) to the top of third guide plate (82), and third guide plate (82) is the type of returning and encircles the setting in third reaction zone (5).

6. The fuel cell metallic bipolar plate zoned flow channel of claim 2, wherein: the first guide plate (61) is gradually increased from two sides close to the length direction of the pole plate (1) to one side close to the center line of the length direction of the pole plate (1).

7. The fuel cell metallic bipolar plate zoned flow channel of claim 4, wherein: the guide rods (71) of the two groups of second guide assemblies (7) are mutually close to the side walls of the two groups of second guide assemblies and are fixedly connected with the convex blocks (9).

8. The fuel cell metallic bipolar plate zoned flow channel of claim 7, wherein: the convex block (9) is gradually pointed from the side wall close to the guide rod (71) to the side wall far away from the guide rod (71).

Technical Field

The application relates to the technical field of fuel cells, in particular to a fuel cell metal bipolar plate regional flow channel.

Background

The metal double-splint fuel cell is a device for converting chemical energy into electric energy, the main reactants are hydrogen and oxygen, the generated product is water, and the metal double-splint fuel cell is an environment-friendly device; the bipolar plate has the functions of providing a gas flow channel, preventing the hydrogen and the oxygen in the cell gas chamber from communicating with each other, and establishing a current path between the anode and the cathode which are connected in series.

The existing bipolar plate comprises a cathode plate, an anode plate and a proton exchange membrane, wherein the proton exchange membrane is clamped between the cathode plate and the anode plate, and catalyst layers are arranged among the cathode plate, the anode plate and the proton exchange membrane; the side walls of the anode plate and the cathode plate, which are close to each other, are fixedly connected with ridges for guiding gas; when in use, hydrogen is introduced from one side of the anode plate, and oxygen is introduced from the side with the cathode plate.

In view of the above-mentioned related art, the inventors have considered that the conventional cathode plate and anode plate straight flow channel structure has a defect that reaction of reaction gas in the flow channel is liable to be insufficient.

Disclosure of Invention

In order to solve the defect of insufficient reaction of reaction gas, the application provides a fuel cell metal bipolar plate zoned flow channel.

The application provides a fuel cell metal bipolar plate subregion runner adopts following technical scheme: the device comprises an embedded groove formed in the side wall of two adjacent polar plates, wherein two partition plates are fixedly connected in the embedded groove, the two partition plates are parallel to each other and are vertically and fixedly connected with the polar plates, and the polar plates are sequentially divided into a first reaction zone, a second reaction zone and a third reaction zone along the length direction of the polar plates by the partition plates; the second reaction zone is communicated with the first reaction zone and the third reaction zone; a first flow guide assembly is arranged in the first reaction zone; a second diversion assembly is arranged in the second reaction zone, and a third diversion assembly is arranged in the third reaction zone.

Through adopting above-mentioned technical scheme, let in reaction gas in the caulking groove during use, reaction gas has first reaction zone to enter into the second reaction zone under the effect of baffle, in second reaction zone enters into the third reaction zone again, simultaneously at first water conservancy diversion subassembly, gaseous and catalyst layer react under the effect of second water conservancy diversion subassembly and third water conservancy diversion subassembly, first water conservancy diversion subassembly, the setting of second water conservancy diversion subassembly and third water conservancy diversion subassembly has increased the reaction time of reaction gas and catalyst, and then reached the effect that improves reaction gas reaction sufficiency.

Preferably, the first flow guide assembly comprises a first flow guide plate and a collecting and accommodating plate; the first guide plate is fixedly connected in the caulking groove, and the length direction of the first guide plate is the same as that of the pole plate; the first guide plates are arranged in a plurality and are distributed at equal intervals along the width direction of the polar plate; the collecting plate is positioned at one end of the first guide plate close to the second reaction zone and is fixedly connected with the polar plate.

Through adopting above-mentioned technical scheme, after reactant gas entered into first reaction zone, under the guide effect of first guide plate and collection and receiving board, reactant gas accesss to the second reaction zone after collection through the collection and receiving board, and the setting of first guide plate can be convenient for reactant gas fill in only first reaction zone, has guaranteed dye battery's reaction rate.

Preferably, the side wall of the collecting plate close to the first guide plate is inclined gradually towards the side close to the second reaction zone from the side close to the side wall of the polar plate in the length direction to the side far away from the side wall of the polar plate in the length direction.

Through adopting above-mentioned technical scheme, the collection board shape be provided with help reaction gas to convey to the second reaction zone by first reaction zone, guaranteed reaction gas pressure when entering into the second reaction zone simultaneously, reached the reaction sufficiency of guaranteeing reaction gas in the second reaction zone.

Preferably, the second flow guide assembly comprises a plurality of flow guide rods and a connecting rod, the length direction of the flow guide rods is the same as the width direction of the polar plate, the flow guide rods are distributed at equal intervals along the length direction of the polar plate, and the flow guide rods are sequentially connected end to end through the connecting rod to form the second flow guide assembly; the second diversion assemblies are arranged in two groups, and the two groups of second diversion assemblies are parallel to each other.

Through adopting above-mentioned technical scheme, when reaction gas flows to the second reaction zone in from first reaction zone, reaction gas enters into between two sets of second water conservancy diversion subassemblies, and at this moment under the direction of second water conservancy diversion subassembly, reaction gas's circulation route has been stipulated, and then has reached the contact time that improves reaction gas and catalyst layer, and then has reached the effect that improves reaction gas reaction sufficiency, guarantees simultaneously that reaction gas can be even to contact with catalyst layer.

Preferably, the third flow guide assembly comprises a stop plate and a third flow guide plate, the stop plate is vertically and fixedly connected with the polar plate, and the stop plate is vertically and fixedly connected with the partition plate; the third guide plate is fixedly connected in the caulking groove, the starting end of the third guide plate is fixedly connected with one end, far away from the baffle, of the stop plate, and the third guide plate is arranged in the third reaction zone in a circular mode in a surrounding mode.

Through adopting above-mentioned technical scheme, the circulating path of reactant gas has been injectd in setting up of backstop board and third guide plate, third water conservancy diversion subassembly sets up differently with the second water conservancy diversion subassembly simultaneously, third water conservancy diversion subassembly is different with the setting form of second water conservancy diversion subassembly simultaneously, consequently reactant gas is different with the speed of second reaction zone through the time and the efficiency of third reaction zone, and then reactant gas's conversion rate in the third reaction zone is different with the conversion rate in the second reaction zone, and then reached the effect that improves reactant gas reaction conversion rate.

Preferably, the first guide plate gradually increases from two sides close to the length direction of the pole plate to one side close to the center line of the length direction of the pole plate.

Through adopting above-mentioned technical scheme, the length setting of first guide plate can be convenient for enter into the gaseous intensive dispersion in first minute reaction zone in the first reaction zone, and then improves reaction gas's reaction sufficiency.

Preferably, the side walls of the guide rods of the two groups of second guide assemblies are mutually deviated and fixedly connected with the convex blocks.

By adopting the technical scheme, the arrangement of the lug increases the reaction time of the reaction gas in the second reaction area, so that the contact time of the projection gas and the catalyst layer is increased, and the contact time of the reaction gas and the catalyst layer is prolonged.

Preferably, the protrusion is gradually pointed from the side wall close to the guide rod to the side wall far away from the guide rod.

Through adopting above-mentioned technical scheme, the rate that reaction gas circulates can be played to the lug of most advanced form, has guaranteed projection gas can pass the second water conservancy diversion subassembly smoothly simultaneously.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first reaction zone, the second reaction zone and the third reaction zone are matched with the first flow guide assembly, the second flow guide assembly and the third flow guide assembly for use, so that the contact time of reaction gas and a catalyst layer is ensured, and the effect of improving the reaction gas showing time is further achieved;

2. the arrangement of the lug increases the time for the reaction gas to remain in the second flow guide assembly, so that the contact time of the reaction gas and the catalyst layer is increased, and the effect of showing the reaction sufficiency of the gas is achieved;

3. the arrangement of the third flow guide assembly realizes the secondary reaction of the gas which is not fully reacted in the second reaction zone; thereby improving the conversion rate of the reaction gas.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

In the figure, 1, a polar plate; 11. caulking grooves; 2. a partition plate; 21. a first through hole; 22. a second through hole; 3. a first reaction zone; 4. a second reaction zone; 5. a third reaction zone; 6. a first flow guide assembly; 61. a first baffle; 62. a collecting plate; 7. a second flow guide assembly; 71. a guide rod; 72. a connecting rod; 8. a third flow guide assembly; 81. a stopper plate; 82. a third baffle; 9. and (4) a bump.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a fuel cell metal bipolar plate zoned flow channel.

Referring to fig. 1, the fuel cell metal bipolar plate zoned flow channel includes an caulking groove 11 formed on the side walls of two polar plates 1 close to each other, two partition plates 2 are fixedly connected in the caulking groove 11, the central line of the length direction of the two partition plates 2 is parallel to the central line of the width direction of the polar plates 1, and the partition plates 2 are vertically and fixedly connected with the polar plates 1; the caulking groove 11 is sequentially divided into a first reaction zone 3, a second reaction zone 4 and a third reaction zone 5 by the partition plate 2, and the second reaction zone 4 is communicated with the first reaction zone 3 and the third reaction zone 5; in this embodiment, the connection mode of the second reaction zone 4 communicating the first reaction zone 3 and the third reaction zone 5 is that the partition plate 2 between the first reaction zone 3 and the second reaction zone 4 is provided with a first through hole 21, and the partition plate 2 between the second reaction zone 4 and the third reaction zone 5 is provided with a second through hole 22; a first flow guide assembly 6 is arranged in the first reaction zone 3, a second flow guide assembly 7 is arranged in the second reaction zone 4, and a third flow guide assembly 8 is arranged in the third reaction zone 5.

Referring to fig. 1, when the reactor is used, reaction gas is introduced into the caulking groove 11, the reaction gas flows to the first reaction area 3 and reacts with the catalyst layer under the action of the first flow guide assembly 6, after the reaction gas is filled in the first reaction area 3, the reaction gas flows to the second reaction area 4 through the first through hole 21 and reacts with the catalyst layer under the action of the second flow guide assembly 7, after the second reaction area 4 is filled with the reaction gas, the reaction gas flows to the third reaction area 5 through the second through hole 22, the contact area between the reaction gas and the catalyst layer is increased due to the arrangement of the first flow guide assembly 6, the second flow guide assembly 7 and the third flow guide assembly 8, and the effect of improving the reaction sufficiency of the reaction gas is further achieved.

Referring to fig. 1, the first flow guiding assembly 6 includes a first flow guiding plate 61 and a collecting plate 62, the first flow guiding plate 61 is fixedly connected in the caulking groove 11, and the length direction of the first flow guiding plate 61 is the same as the length direction of the pole plate 1; the first guide plate 61 is provided with a plurality of, and first guide plate 61 distributes along the width direction equidistance of polar plate 1, and first guide plate 61 is from being close to polar plate 1 length direction's both sides, to being close to one side of polar plate 1 length direction central line and growing gradually. The collecting plate 62 is positioned at one end of the first guide plate 61 close to the second reaction zone 4, and the collecting plate 62 is fixedly connected with the polar plate 1; the two collecting plates 62 are arranged, and the ends, close to each other, of the two collecting plates 62 do not shield the first through hole 21; the collecting plate 62 is close to the side wall of the first guide plate 61, and gradually inclines to the side close to the second reaction zone 4 from the side close to the side wall of the plate 1 in the length direction to the side far away from the side wall of the plate 1 in the length direction.

Referring to fig. 1, the second flow guide assembly 7 includes a plurality of flow guide rods 71 and a plurality of connecting rods 72, the length direction of the flow guide rods 71 is the same as the width direction of the electrode plate 1, the flow guide rods 71 are equidistantly distributed along the length direction of the electrode plate 1, the flow guide rods 71 are sequentially connected end to end through the connecting rods 72 to form the second flow guide assembly 7, two groups of the second flow guide assemblies 7 are arranged, and the two groups of the second flow guide assemblies 7 are parallel; the starting ends of the two groups of second flow guide assemblies 7 are communicated with the first through holes 21, and the tail ends of the two groups of second flow guide assemblies 7 are communicated with the second through holes 22; the side walls of the guide rods 71 of the two groups of second guide assemblies 7, which are close to each other, are fixedly connected with protrusions 9, and the protrusions 9 gradually take the shape of tips from one end close to the side walls of the guide rods 71 to one end far away from the side walls of the guide rods 71.

Referring to fig. 1, the third flow guiding assembly 8 includes a stop plate 81 and a third flow guiding plate 82, the stop plate 81 is vertically and fixedly connected with the pole plate 1, and the stop plate 81 is vertically and fixedly connected with the partition plate 2; the third guide plate 82 is fixedly connected in the caulking groove 11, the starting end of the third guide plate 82 is fixedly connected with one end of the stop plate 81 far away from the partition plate 2, and the third guide plate 82 is arranged in the third reaction zone 5 in a circular manner; and the space enclosed by the starting ends of the stop plate 81 and the third guide plate 82 and the side wall of the caulking groove 11 is communicated with the second through hole 22.

Referring to fig. 1, when the reactor is used, a reaction gas firstly enters the first reaction zone 3 and reacts with the catalyst layer under the guiding of the first guiding component 6, after the reaction gas fills the first reaction zone 3, the reaction gas flows to the second reaction zone 4 through the first through hole 21, the arrangement of the guiding rod 71 and the connecting rod 72 limits the reaction path, and simultaneously slows down the time for the reaction gas to pass through the second reaction zone 4, and at the moment, the reaction gas passes through the second through hole 22 and enters the third reaction zone 5, and the first reaction zone 3, the second reaction zone 4, the third reaction zone 5, the first guiding component 6, the second guiding component 7 and the third guiding component 8 are matched for use, so that the reaction sufficiency of the reaction gas is improved.

The implementation principle of the fuel cell metal bipolar plate subregion runner of this application embodiment is: the flow time and the flow path of the reaction gas are adjusted through the arrangement of the first flow guide assembly 6, the second flow guide assembly 7 and the third flow guide assembly 8, and then the reaction sufficiency of the reaction gas is improved.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.