CN219616241U - Cleaning tool for bipolar plate - Google Patents

Abstract

The utility model relates to the technical field of fuel cells and discloses a cleaning tool for bipolar plates, which comprises a frame, a plurality of separating pieces and a supporting mechanism, wherein the supporting mechanism comprises a supporting main body and a connecting assembly, the supporting main body is connected with the frame through the connecting assembly, and one end of the supporting main body penetrates through a through hole on the frame to extend into a containing cavity and penetrates through a gas cavity of each bipolar plate so as to provide upward supporting force for each bipolar plate. It can be understood that when the frame is placed in water in a vertical state, water flow can be cleaned along the extending direction of the bipolar plate runner structure, and the supporting body passes through the gas cavity of the bipolar plate by arranging the supporting mechanism, so that the supporting body provides upward supporting force for the bipolar plate, and therefore, the gravity and the water pressure of the bipolar plate are transferred from the edge part of the gas cavity to the main body part of the bipolar plate, the whole area of the main body part of the bipolar plate is large, the bearing capacity is high, and deformation or fracture is not easy to occur.

Description

Cleaning tool for bipolar plate

Technical Field

The utility model relates to the technical field of fuel cells, in particular to a cleaning tool for a bipolar plate.

Background

Bipolar plates are one of the components constituting a fuel cell, and function as current conduction, gas distribution, reaction heat dissipation, and the like in the fuel cell. The bipolar plate of the fuel cell is mainly in a cuboid structure, and in order to further improve the volume specific power of the fuel cell and improve the cell performance, the bipolar plate needs to be made thinner. The thickness of the current bipolar plate is generally about 1-2 mm. The reduction of the thickness of the bipolar plate causes the reduction of the runner size, and the requirement on the precision and uniformity of the runner is higher. To avoid the flow channels from being blocked or contaminated by fine impurities, the bipolar plates need to be cleaned during the machining stage to remain clean.

In the traditional bipolar plate cleaning mode, bipolar plates are stacked and scattered and directly overlapped together, each surface cannot be sufficiently cleaned, and cleaning dead angles exist for the bipolar plates with convex-concave flow channels on the surfaces and cooling water flow channels in the surfaces; in addition, the overlapping stacking of bipolar plates also presents the problem of incomplete drying, requiring repeated drying.

It should be noted that, the bipolar plate is equipped with the gas chamber along the both ends of runner extending direction, when wasing the bipolar plate, needs to be put into water with bipolar plate in vertical state for rivers can wash along the extending direction of bipolar plate runner structure, thereby improve bipolar plate's cleaning quality and efficiency. However, some existing bipolar plate fixing tools do not consider that the lower end of the bipolar plate is subjected to the action of self gravity and water pressure in the cleaning process, the lower end of the bipolar plate is provided with a gas cavity, the material on the periphery side of the gas cavity is thinner, and the edge of the lower end of the air cavity of the bipolar plate is easy to deform or even break when the bipolar plate is cleaned.

Disclosure of Invention

The utility model aims to provide a cleaning tool for a bipolar plate, which can ensure that each surface of the bipolar plate is sufficiently cleaned, and can effectively avoid edge deformation and fracture of the bipolar plate.

In order to achieve the above object, the present utility model provides a cleaning tool for a bipolar plate, comprising:

the frame is provided with a storage opening and a containing cavity, the storage opening is communicated with the containing cavity, and the containing cavity is used for containing the bipolar plate;

the plurality of separators are arranged in the accommodating cavity in parallel, and divide the accommodating cavity into a plurality of storage positions for storing the bipolar plates; and

the support mechanism comprises a support main body and a connecting assembly, wherein the support main body is connected with the frame through the connecting assembly, and the support main body is at least partially arranged in the accommodating cavity and penetrates through the gas cavity of each bipolar plate so as to support each bipolar plate.

Preferably, the connecting assembly comprises a first connecting member fixedly connected with the frame, the first end of the supporting body is connected with the first connecting member, and the second end of the supporting body penetrates through the frame, stretches into the accommodating cavity and penetrates through the gas cavity of each bipolar plate to provide upward supporting force for each bipolar plate.

Preferably, the first connecting piece is fixedly connected with the frame and is arranged outside the frame, and at least one stud is fixedly connected to the first connecting piece;

the first end of the supporting main body is connected with a plate body used for being connected with the first connecting piece, and a connecting hole is formed in the plate body;

the stud passes through the plate body through the connecting hole and is in threaded connection with the nut.

Preferably, the connecting assembly comprises a second connecting piece, the second connecting piece is fixedly connected with the frame, a slot is formed in the second connecting piece, and the second end of the supporting main body is inserted into the slot.

Preferably, the supporting main body is split, the supporting main body comprises a plurality of supporting plates, and first ends of the plurality of supporting plates are connected with the plate body;

a plurality of the support plates pass through the respective gas chambers of the bipolar plate.

Preferably, the second connecting piece is provided with a plurality of slots, and the slots are in one-to-one correspondence with the supporting plates.

Preferably, the spacers are arranged in parallel at equal intervals.

Preferably, the frame comprises a first plate, a second plate and a third plate which are hollowed out, a group of opposite sides of the first plate are respectively connected with the second plate, another group of opposite sides of the first plate are respectively connected with the third plate, the first plate, the second plate and the third plate are jointly enclosed into the accommodating cavity, and the side surface of the frame opposite to the first plate is the storage opening.

Preferably, the separator is parallel to the second plate member;

the first connecting piece is fixedly connected with the second plate, the first end of the supporting main body is connected with the first connecting piece, and the second end of the supporting main body penetrates through the second plate body to extend into the accommodating cavity;

the second connecting piece is fixedly connected with the other second plate on the opposite side, and the second end of the supporting main body is inserted into the slot.

Preferably, the frame is provided with a sealing piece which spans the storage opening and is perpendicular to the partition piece, hooks are arranged at two ends of the sealing piece, the edge of the storage opening is provided with a folded edge which is turned outwards, and the folded edge is hooked by the hooks to install the sealing piece on the frame.

The utility model provides a bipolar plate cleaning tool, which has the beneficial effects that compared with the prior art:

the cleaning tool for the bipolar plates comprises a supporting mechanism, wherein the supporting mechanism comprises a supporting main body and a connecting assembly, the supporting main body is connected with a frame through the connecting assembly, and one end of the supporting main body penetrates through a through hole in the frame to extend into a containing cavity and penetrates through a gas cavity of each bipolar plate so as to provide upward supporting force for each bipolar plate. It can be understood that when the frame is placed in water in a vertical state, water flow can be cleaned along the extending direction of the bipolar plate runner structure, and the supporting body passes through the gas cavity of the bipolar plate by arranging the supporting mechanism, so that the supporting body provides upward supporting force for the bipolar plate, and therefore, the gravity and the water pressure of the bipolar plate are transferred from the edge part of the gas cavity to the main body part of the bipolar plate, the whole area of the main body part of the bipolar plate is large, the bearing capacity is high, and deformation or fracture is not easy to occur.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a cleaning tool for a bipolar plate (under vertical placement) according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a left side view of FIG. 1;

fig. 5 is a schematic structural diagram of a part of a cleaning tool for a bipolar plate according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of the overall structure of a bipolar plate cleaning tool according to an embodiment of the present utility model (under transverse placement);

fig. 7 is an exploded view of a supporting mechanism according to an embodiment of the present utility model.

In the figure:

1. a frame; 1a, a first plate; 1b, a second plate; 1c, a third plate; 11. a storage port; 12. a receiving chamber; 13. folding edges; 14. a sealing member; 141. a hook;

2. a partition; 21. a straight steel wire; 22. s-shaped steel wires;

3. a support mechanism; 31. a support body; 311. a support plate; 312. a plate body; 313. a connection hole;

32. a first connector; 321. a stud; 322. a butterfly nut;

33. a second connector; 331. a slot;

4. a bipolar plate; 41. an air chamber; 42. a main body; 43. edges.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.

It is to be understood that in the description of the present utility model, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices 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. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e., features defining "first," "second," may explicitly or implicitly include one or more such features. Furthermore, unless otherwise indicated, the meaning of "a plurality" is two or more.

It should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 7, an embodiment of the present utility model provides a cleaning tool for a bipolar plate, which includes a frame 1, a plurality of separators 2 and a supporting mechanism 3, wherein the frame 1 has a storage opening 11 and a receiving cavity 12, the storage opening 11 and the receiving cavity 12 are penetrated, and the receiving cavity 12 is used for receiving the bipolar plate 4; the plurality of separators 2 are arranged in parallel in the accommodating cavity 12, each separator 2 divides the accommodating cavity 12 into a plurality of storage positions for storing the bipolar plates 4, the storage positions arranged in a separated manner enable the bipolar plates 4 to be separated from each other in the cleaning process, the bipolar plates 4 are prevented from being stacked and cleaned, the bipolar plates 4 are enabled to be completely dry after being cleaned, it is pointed out that the width of each storage position is set according to the actual thickness of the bipolar plates 4, a certain movable space is required for the bipolar plates 4, the bipolar plates 4 are prevented from being damaged due to extrusion in the cleaning process, a storage opening 11 for storing the bipolar plates 4 is arranged on one side of the frame 1, and therefore the bipolar plates 4 can be stored in the accommodating cavity 12 through the storage opening 11.

When the bipolar plate 4 is stored, as shown in fig. 6, the frame 1 is horizontally placed so that the storage opening 11 faces upwards, and the bipolar plate 4 is inserted into the accommodating cavity 12 from top to bottom, so that the bipolar plate 4 is stored; when the bipolar plate 4 is cleaned, as shown in fig. 1-4, the frame 1 is placed in water in a vertical state, so that water flow can be cleaned along the extending direction of the flow channel structure of the bipolar plate 4, and the cleaning quality and efficiency of the bipolar plate 4 are improved.

It will be appreciated that in the prior art, in order to increase the volumetric power of the fuel cell and to make the structure smaller and smaller, the thinner the bipolar plate 4 is, the better the bipolar plate 4 is made, which is typically about 2 mm. Further, gas chambers 41 are provided along both ends of the extending direction of the flow channel structure of the bipolar plate 4. When the bipolar plate 4 is cleaned, the frame 1 is placed in the water in a vertical state, at this time, the lower end of the bipolar plate 4 is acted by self gravity and water pressure, the lower end of the bipolar plate 4 is provided with a gas cavity 41, the material of the gas cavity 41 is thinner, and when the bipolar plate 4 is cleaned, the lower end edge 43 of the gas cavity 41 of the bipolar plate is easy to deform or even break.

Based on the above-mentioned problems, the cleaning tool for bipolar plates provided in this embodiment further includes a supporting mechanism 3, as shown in fig. 5 and 7, where the supporting mechanism 3 includes a supporting body 31 and a connecting component, the supporting body 31 is connected to the frame 1 through the connecting component, and one end of the supporting body 31 penetrates through the frame 1 to extend into the accommodating cavity and penetrates through the gas cavity 41 of each bipolar plate 4, so as to provide an upward supporting force for each bipolar plate 4. It can be understood that when the frame 1 is placed in water in a vertical state, water flow can be cleaned along the extending direction of the flow channel structure of the bipolar plate 4, by arranging the supporting mechanism 3, the supporting body 31 passes through the gas cavity 41 of the bipolar plate 4, the supporting body 31 provides upward supporting force for the bipolar plate 4, the edge 43 of the gas cavity 41 is not stressed, therefore, gravity and water pressure of the bipolar plate 4 are transferred from the edge 43 of the gas cavity 41 to the central main body 42 of the bipolar plate 4, the whole area of the central main body 42 of the bipolar plate is large, the bearing capacity is high, and deformation or fracture is not easy to occur.

Preferably, the connection assembly comprises a first connection member 32, the first connection member 32 being fixedly connected to the frame 1 and being disposed outside the receiving chamber 12, a first end of the support body 31 being connected to the first connection member 32, and a second end of the support body 31 extending through the frame 1 into the receiving chamber 12 and through the gas chamber 41 of each bipolar plate 4 to provide an upward supporting force for each bipolar plate 4.

In this embodiment, the first connecting member 32 is of a T-shaped structure, at least one stud 321 is fixedly connected to the first connecting member 32, a plate 312 for connecting with the first connecting member 32 is connected to a first end of the supporting main body 31, a plurality of connecting holes 313 are formed in the plate 312, the stud 321 passes through the plate 312 through the connecting holes 313 and is in threaded connection with a nut, and preferably, the nut is a butterfly nut 322.

Preferably, the connecting assembly provided in this embodiment further includes a second connecting member 33, the second connecting member 33 is fixedly connected with the frame 1, a slot 331 is provided on the second connecting member 33, and the first end of the supporting body 31 is inserted into the slot 331, so that two ends of the supporting body 31 are connected with the frame 1 through the first connecting member 32 and the second connecting member 33 respectively, and the supporting strength of the supporting body 31 can be effectively enhanced.

Preferably, the supporting body 31 is a split type, the supporting body 31 includes a plurality of supporting plates 311, and first ends of the plurality of supporting plates 311 are connected to the plate 312; a plurality of the support plates 311 pass through the respective gas chambers 41 of the bipolar plate 4, respectively. Further, the second connecting piece 33 is provided with a plurality of slots 331, and the slots 331 are in one-to-one correspondence with the supporting plates 311.

Preferably, the separators 2 are arranged in parallel at equal intervals, so that the operation of the manipulator is more convenient when the manipulator accesses the bipolar plates 4, the manipulator places the bipolar plates 4 into the accommodating cavity 12 one by one according to the synchronous distance, and the accessing process is more stable and efficient.

In order to fully adapt to the structural characteristics of the bipolar plate 4 that is a rectangular sheet, the frame 1 in this embodiment is preferably in a parallelepiped shape, as shown in fig. 1 and 5, the frame 1 is a cuboid, and includes a hollowed first plate 1a, a second plate 1b and a third plate 1c, the second plate 1b and the third plate 1c are both two, the two second plates 1b are respectively disposed on a group of opposite sides of the first plate 1a, the two third plates 1c are respectively disposed on another group of opposite sides of the first plate 1a, and the first plate 1a, the second plate 1b and the third plate 1c enclose a storage accommodating cavity 12, and a side of the frame 1 opposite to the first plate 1a is a storage opening 11. In order to ensure the structural strength of the cleaning tool and simultaneously reduce the weight of the cleaning tool to the minimum, the plate is preferably a steel plate with the thickness of 1.5 mm and is formed by bending and laser cutting, and the notch is required to be polished smoothly, so that the bipolar plate is prevented from being scratched by burrs; on the basis of ensuring the strength of the tool, a plurality of through holes in different forms are formed in the plate, and are used for increasing the permeability of the frame 1, so that water flow entering during cleaning and water dripping during drying are facilitated; in addition, the plates must be assembled into the frame 1 with the bent openings facing outwards, so as to prevent the folded edges 13 from damaging the bipolar plate 4.

It should be noted that the parts of the cleaning tool are all made of stainless steel, preferably 316L stainless steel, so that the cleaning tool has better corrosion resistance and high temperature resistance, and meanwhile, the bipolar plate 4 is not polluted during cleaning.

Preferably, the frame 1 is provided with a sealing member 14 which spans the storage opening 11 and is perpendicular to the partition 2, the sealing member 14 is preferably a steel strip with the thickness of 0.5 mm, hooks 141 are arranged at two ends of the sealing member, the edge of the storage opening 11 is provided with a folded edge 13 which is turned outwards, and the hooks 141 hook the folded edge 13 to mount the sealing member 14 on the frame 1. The sealing member 14 is mainly used for sealing the bipolar plate 4 in the storage opening 11, so as to avoid damage caused by the bipolar plate 4 falling out of the storage cavity 12 during cleaning.

In summary, the present utility model provides a bipolar plate cleaning tool, when in use, a frame 1 is firstly horizontally placed, so that a storage opening 11 is upward, and a bipolar plate 4 is placed in a storage position from top to bottom; after the placement, the sealing member 14 is fastened to the frame 1, so that the bipolar plate 4 is stably encapsulated in the accommodating chamber 12. Subsequently, the first end of the supporting body 31 is inserted into the housing cavity 12 through the second plate member 1b, and the supporting plate 311 is inserted into the gas cavity 41 of each bipolar plate 4 until the second end of the supporting body 31 is inserted into the insertion slot 331 of the second connecting member 33, the stud 321 is inserted into the plate body 312 through the connecting hole 313, and finally is screwed by the wing nut 322; above, accomplish the installation and get into the washing stage, put into the aquatic with frame 1 in vertical state, rivers can be followed the extending direction of bipolar plate 4 runner structure and washd, through setting up supporting mechanism 3, supporting body 31 passes the gas chamber 41 of bipolar plate 4, supporting body 31 provides ascending holding power for bipolar plate 4, the edge 43 of gas chamber 41 is not stressed, from this, bipolar plate 4 self gravity and water pressure shift to bipolar plate 4 central main part 42 positions from the edge 43 position of gas chamber 41, bipolar plate central main part 42 position overall area is big, bearing capacity is high, be difficult for taking place to warp or fracture.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (10)

1. The utility model provides a bipolar plate's washing frock which characterized in that includes:

the frame is provided with a storage opening and a containing cavity, the storage opening is communicated with the containing cavity, and the containing cavity is used for containing the bipolar plate;

the plurality of separators are arranged in the accommodating cavity in parallel, and divide the accommodating cavity into a plurality of storage positions for storing the bipolar plates; and

the support mechanism comprises a support main body and a connecting assembly, wherein the support main body is connected with the frame through the connecting assembly, and the support main body is at least partially arranged in the accommodating cavity and penetrates through the gas cavity of each bipolar plate so as to support each bipolar plate.

2. The bipolar plate cleaning tool according to claim 1, wherein: the connecting assembly comprises a first connecting piece, the first connecting piece is fixedly connected with the frame, the first end of the supporting main body is connected with the first connecting piece, and the second end of the supporting main body penetrates through the frame, stretches into the accommodating cavity and penetrates through the gas cavity of each bipolar plate so as to provide upward supporting force for each bipolar plate.

3. The bipolar plate cleaning tool according to claim 2, wherein: the first connecting piece is fixedly connected with the frame and arranged outside the frame, and at least one stud is fixedly connected to the first connecting piece;

the first end of the supporting main body is connected with a plate body used for being connected with the first connecting piece, and a connecting hole is formed in the plate body;

the stud passes through the plate body through the connecting hole and is in threaded connection with the nut.

4. A bipolar plate cleaning tool according to claim 3, wherein: the connecting assembly comprises a second connecting piece, the second connecting piece is fixedly connected with the frame, a slot is formed in the second connecting piece, and the second end of the supporting main body is inserted into the slot.

5. The bipolar plate cleaning tool according to claim 4, wherein: the support main body is split, and comprises a plurality of support plates, and first ends of the plurality of support plates are connected with the plate body;

a plurality of the support plates pass through the respective gas chambers of the bipolar plate.

6. The bipolar plate cleaning tool according to claim 5, wherein: the second connecting piece is provided with a plurality of slots, and the slots correspond to the supporting plates one by one.

7. The bipolar plate cleaning tool according to claim 1, wherein: the separating pieces are distributed in parallel at equal intervals.

8. The bipolar plate cleaning tool according to claim 4, wherein: the frame comprises a first plate, a second plate and a third plate which are hollowed out, a group of opposite sides of the first plate are respectively connected with the second plate, another group of opposite sides of the first plate are respectively connected with the third plate, the first plate, the second plate and the third plate are jointly enclosed into the accommodating cavity, and the side face, opposite to the first plate, of the frame is the storage opening.

9. The bipolar plate cleaning tool according to claim 8, wherein: the separator is parallel to the second plate;

the first connecting piece is fixedly connected with the second plate, the first end of the supporting main body is connected with the first connecting piece, and the second end of the supporting main body penetrates through the second plate and stretches into the accommodating cavity;

the second connecting piece is fixedly connected with the other second plate on the opposite side, and the second end of the supporting main body is inserted into the slot.

10. The bipolar plate cleaning tool according to any one of claims 1-9, wherein: the frame is provided with a sealing piece which stretches across the storage opening and is perpendicular to the partition piece, hooks are arranged at two ends of the sealing piece, the edge of the storage opening is provided with a folded edge which is turned outwards, and the folded edge is hooked by the hooks to install the sealing piece on the frame.