Device for cleaning graphite bipolar plate

Abstract

The utility model relates to the technical field of bipolar plate preparation, and discloses a device for cleaning a graphite bipolar plate, which comprises a handle and a plurality of cleaning parts, one end face of the handle is provided with a plurality of jacks, and the first ends of the cleaning parts are inserted into the jacks in a one-to-one correspondence manner, so that the handle is connected with the cleaning parts in an inserted manner; meanwhile, the second end of the cleaning piece is a cleaning head, the outer contour of the cleaning head is smaller than the inner contour of the flow channel of the graphite bipolar plate, and an operator holds the handle by hand to enable the cleaning head of the cleaning piece to extend into the flow channel of the bipolar plate, so that the deep part of the flow channel which is not easy to clean in an existing cleaning mode can be deeply cleaned, and residual dust and resin in the flow channel are brushed away; the problems that according to an existing cleaning method, the cleaning effect on the interior of a flow channel is poor, and cleaning is not thorough are solved. In addition, a gap exists between every two adjacent cleaning heads, the multiple cleaning heads correspondingly stretch into the multiple bipolar plate flow channels respectively, the multiple cleaning heads clean the multiple flow channels at the same time, and the cleaning efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bipolar plate preparation, in particular to a device for cleaning graphite bipolar plates. Background Art

[0002] A fuel cell is a chemical device that converts the chemical energy of a fuel directly into electrical energy. It does not generate noise or harmful gases, and is therefore a clean, efficient, green, and environmentally friendly power source. The bipolar plate is one of the key components of a fuel cell and is the "skeleton" of the stack. The bipolar plate and the membrane electrode are stacked together to form a stack, which plays a supporting role in the fuel cell. It can also collect current, provide channels for coolant, separate oxidants and reductants, etc. At present, the bipolar plates commonly used in fuel cells include metal bipolar plates, flexible graphite bipolar plates, etc. Compared with metal bipolar plates, flexible graphite bipolar plates have the characteristics of high conductivity, corrosion resistance, and light weight, and have become the focus of bipolar plate development.

[0003] The front and back sides of the graphite bipolar plate are processed with fine and orderly flow channels. The flow channels are the main transmission channels for the reaction gas and the production liquid, and play an important role in collecting current, mechanical support, hydrothermal management, and separating the positive and negative reaction gases. During the processing, a large amount of dust and resin are attached to the surface of the bipolar plate, which needs to be cleaned. There are three existing methods for cleaning graphite bipolar plates: 1. Cleaning with a high-pressure air gun, 2. Cleaning with ultrasound; 3. Cleaning with deionized water boiling; the above three methods can effectively clean the dust and resin on the surface of the bipolar plate, but the cleaning effect on the inside of the flow channel is not good, and the cleaning is not thorough, resulting in residual resin in the bipolar plate flow channel, which affects the subsequent processing and the quality of the bipolar plate. Utility Model Content

[0004] The utility model aims to provide a device for cleaning graphite bipolar plates, wherein a cleaning head can extend into a bipolar plate flow channel to deeply clean the flow channel, thereby effectively removing residues in the bipolar plate flow channel and greatly reducing the blockage of the flow channel by harmful substances.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a device for cleaning graphite bipolar plates, which includes a handle and a plurality of cleaning pieces;

[0006] A plurality of sockets are provided on one end surface of the handle, and the first ends of the cleaning members are plugged into the sockets one by one. The second ends of the cleaning members are cleaning heads, and the outer contour of the cleaning heads is smaller than the inner contour of the graphite bipolar plate flow channel, and there is a gap between two adjacent cleaning heads.

[0007] Preferably, the cleaning head is an arc-shaped head.

[0008] Preferably, a plurality of the cleaning members are arranged in parallel at equal intervals.

[0009] Preferably, a first connecting hole is provided at the first end of the cleaning member, and a second connecting hole communicating with each of the plug holes is provided at one side of the handle;

[0010] The first connection holes are aligned with the second connection holes and then fixed via a connection member.

[0011] Preferably, the connecting member is a pin.

[0012] Preferably, the cleaning element is made of stainless steel.

[0013] Preferably, the number of the cleaning elements is set to 5-10.

[0014] The utility model provides a device for cleaning graphite bipolar plates. Compared with the prior art, the utility model has the following beneficial effects:

[0015] The device for cleaning graphite bipolar plates provided by the utility model comprises a handle and a plurality of cleaning pieces, wherein a plurality of sockets are arranged on one end face of the handle, and the first ends of the cleaning pieces are plugged into the sockets one by one, thereby realizing a plug-in connection between the handle and the cleaning pieces, enabling efficient replacement of the cleaning pieces and realizing the recycling of the handle, which is convenient, fast, economical and practical.

[0016] At the same time, the second end of the cleaning piece is a cleaning head, the outer contour of the cleaning head is smaller than the inner contour of the graphite bipolar plate flow channel. The operator holds the handle to make the cleaning head of the cleaning piece extend into the bipolar plate flow channel, thereby being able to perform deep cleaning on the deep part of the flow channel that is not easy to clean using existing cleaning methods, and brush off the residual dust and resin in the flow channel, thereby solving the problem of poor cleaning effect and incomplete cleaning of the inside of the flow channel by the current cleaning method.

[0017] In addition, there is a gap between two adjacent cleaning heads. It should be noted that the gap between two adjacent cleaning heads is set according to the spacing of the flow field, and this application does not make a specific limitation. Multiple cleaning heads extend into multiple bipolar plate flow channels respectively, and multiple cleaning heads clean multiple flow channels at the same time, effectively improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a device for cleaning a graphite bipolar plate and a bipolar plate provided in an embodiment of the utility model;

[0019] Figure 2 An exploded view of a device for cleaning a graphite bipolar plate provided in an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the structure of a device and flow channel for cleaning a graphite bipolar plate provided in an embodiment of the utility model.

[0021] In the figure:

[0022] 1. Handle; 11. Socket; 12. Second connection hole;

[0023] 2. Cleaning member; 21. Cleaning head; 22. First connecting hole;

[0024] 3. Connector; 4. Bipolar plate; 41. Flow channel; 5. Gap; 6. Resin. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0026] It should be understood that, in the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0027] It should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] like Figure 1 As shown, the embodiment of the utility model provides a device for cleaning graphite bipolar plates, which includes a handle 1 and a plurality of cleaning members 2. A plurality of plug holes 11 are provided on one end face of the handle 1. The first ends of the cleaning members 2 are plugged into the plug holes 11 one by one, thereby realizing the plug-in connection between the handle 1 and the cleaning members 2. At the same time, the second end of the cleaning member 2 is a cleaning head 21. The outer contour of the cleaning head 21 is smaller than the inner contour of the graphite bipolar plate flow channel 41, and there is a gap 5 between two adjacent cleaning heads 21.

[0029] Based on the above structure, the operator holds the handle 1 so that the cleaning head 21 of the cleaning member 2 extends into the flow channel 41 of the bipolar plate 4, thereby being able to perform deep cleaning of the deep part of the flow channel 41 which is not easy to clean by the existing cleaning method, and brushing away the dust and resin remaining in the flow channel 41, thereby solving the problem that the current cleaning method has a poor cleaning effect on the inside of the flow channel 41 and incomplete cleaning; Figure 3 As shown, there is a gap between two adjacent cleaning heads 21. It should be noted that the gap between two adjacent cleaning heads 21 is set according to the spacing of the flow field, and the present application does not make a specific limitation. Preferably, a plurality of cleaning members 2 are arranged in parallel at equal intervals. Further, the number of cleaning members 2 is set to 5-10. Thus, a plurality of cleaning heads 2 respectively extend into a plurality of bipolar plate 4 flow channels 41, and a plurality of cleaning heads 21 clean a plurality of flow channels 41 at the same time, thereby effectively improving the cleaning efficiency.

[0030] Preferably, the cleaning head 21 is an arc-shaped head. When the device provided in this embodiment is used to clean the graphite bipolar plate 4, the cleaning head 21 extends into the flow channel 41 and contacts the surface of the bipolar plate 4 to brush away the residue. Therefore, there is friction between the cleaning head 21 and the surface of the flow channel 41 of the bipolar plate 4. In order to prevent the cleaning head 21 from scratching the bipolar plate 4 during the scraping process, the cleaning head 21 is set to be an arc-shaped head. When the cleaning head 21 with an arc structure scrapes the flow channel 41, the cleaning head 21 and the surface of the flow channel 41 smoothly transition, and only the resin and dust remaining in the flow channel 41 are scraped away, and the bipolar plate 4 will not be scratched.

[0031] In some preferred embodiments, a first connecting hole 22 is provided at the first end of the cleaning member 2, and a second connecting hole 12 communicating with each socket 11 is opened on one side of the handle 1. All cleaning members 2 are inserted into the socket 11, and the first connecting holes 22 of all cleaning members 2 are aligned with each other and with the second connecting holes 12. At this time, the connecting member 3 passes through the second connecting hole 12 and each first connecting hole 22 in sequence, thereby further strengthening the connection relationship between the handle 1 and each cleaning member 2.

[0032] Furthermore, the connecting member 3 is a pin. As for the connection between the handle 1 and the cleaning member 2, it can be understood that, first, the cleaning member 2 is inserted into the socket 11 to achieve the plug-in connection between the handle 1 and the cleaning member 2. In order to strengthen the connection relationship between the handle 1 and the cleaning member 2, and between each cleaning member 2, the first connecting hole 22 is provided at the first end of the cleaning member 2, and the second connecting hole 12 is provided on the handle 1, and a pin is passed through the second connecting hole 12 and the first connecting hole 22, thereby achieving the pin connection between the handle 1 and each cleaning member 2. It can be understood that both the plug-in connection and the pin connection are detachable connections, that is, the cleaning member 2 and the handle 1 are detachably connected, the handle 1 can be used continuously, and only the cleaning member 2 needs to be replaced, which is reasonable in structure and economical and practical.

[0033] Preferably, the cleaning element 2 is made of stainless steel.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A device for cleaning graphite bipolar plates, characterized in that: Includes a handle and several cleaning parts; A plurality of sockets are provided on one end surface of the handle, and the first ends of the cleaning members are plugged into the sockets one by one. The second ends of the cleaning members are cleaning heads, and the outer contour of the cleaning heads is smaller than the inner contour of the graphite bipolar plate flow channel, and there is a gap between two adjacent cleaning heads.

2. The device for cleaning graphite bipolar plates according to claim 1, characterized in that: The cleaning head is an arc-shaped head.

3. The device for cleaning graphite bipolar plates according to claim 1, characterized in that: A plurality of the cleaning elements are arranged in parallel at equal intervals.

4. The device for cleaning graphite bipolar plates according to claim 1, characterized in that: A first connecting hole is provided at the first end of the cleaning member, and a second connecting hole communicating with each of the plug holes is provided at one side of the handle; The first connection holes are aligned with the second connection holes and then fixed via a connection member.

5. The device for cleaning graphite bipolar plates according to claim 4, characterized in that: The connecting piece is a pin.

6. The device for cleaning graphite bipolar plates according to claim 1, characterized in that: The cleaning piece is made of stainless steel.

7. The device for cleaning graphite bipolar plates according to claim 1, characterized in that: The number of the cleaning elements is set to 5-10.

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