CN114474517A - Integrated forming method of graphite bipolar plate - Google Patents
Integrated forming method of graphite bipolar plate Download PDFInfo
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- CN114474517A CN114474517A CN202111642768.5A CN202111642768A CN114474517A CN 114474517 A CN114474517 A CN 114474517A CN 202111642768 A CN202111642768 A CN 202111642768A CN 114474517 A CN114474517 A CN 114474517A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C2037/90—Measuring, controlling or regulating
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- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of forming methods of graphite bipolar plates, in particular to an integrated forming method of a graphite bipolar plate, and the existing forming method of the graphite bipolar plate still has the problems that the development progress is influenced due to long manufacturing mould period, and the defects still exist in hot press forming, punch forming and carving forming, and the following scheme is proposed, wherein the scheme comprises the following steps: s1: designing a device, S2, curing, S3: curing is completed, S4: the invention aims to save the time and cost for manufacturing the die or the jig by not using the die and the jig in the process of manufacturing the bipolar plate, improve the efficiency for manufacturing the graphite bipolar plate and reduce a large amount of cost.
Description
Technical Field
The invention relates to the technical field of forming methods of graphite bipolar plates, in particular to an integrated forming method of a graphite bipolar plate.
Background
At present, the bipolar plates used in flow batteries and fuel cells are totally three, namely graphite bipolar plates, metal bipolar plates and composite bipolar plates. The graphite bipolar plate has low density, good corrosion resistance and electrical conductivity, and can meet the requirement of long-term stable operation of the flow battery and the fuel battery, so that most of manufacturers of the flow battery and the fuel battery use the graphite bipolar plate.
The current processing methods of the graphite bipolar plate are roughly divided into three types: mixing graphite powder and resin, performing mixed hot-press molding in a die, performing flexible graphite punch molding, and placing a molded graphite plate on an engraving machine to engrave a runner. The three methods can manufacture qualified graphite bipolar plates, but have certain defects, the two methods of hot press forming and punch forming need to use a die, and the whole die is scrapped due to redesign of a little small appearance size of the bipolar plate in the development process, so that the development cost is greatly improved, and the die period is long, so that the development progress is influenced. Specific tooling is needed for processing the graphite bipolar plate by the engraving machine, once the size of the graphite bipolar plate is changed in the development process, the tooling can be scrapped, the tooling is needed to be reworked, the trouble and the labor are wasted, the development cost is increased, and the development period is prolonged. Meanwhile, the common defects of the three methods are that the bipolar plate can not be processed and flowed inwards, and the bipolar plate can not be formed at one time. The method of splicing and bonding two single plates can be used for manufacturing the bipolar plate with the inner flow channel, but the requirement for the development of the bonding technology is invisibly increased. Therefore, the temperature change range of the flow battery and the fuel battery, the pressure resistance of the water flow channel and the like are limited.
Because the existing forming method of the graphite bipolar plate still has the problems that the development progress is influenced due to the long period of a manufacturing mould, and the defects still exist in hot press forming, punch forming and engraving forming, an integrated forming method of the graphite bipolar plate is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the problems that the conventional forming method of the graphite bipolar plate still has long manufacturing mold period so as to influence the development progress, and the defects still exist in hot press forming, punch forming and engraving forming and the like, and provides an integrated forming method of the graphite bipolar plate.
In order to achieve the purpose, the invention adopts the following technical scheme:
an integrated molding method of a graphite bipolar plate comprises the following steps:
s1: designing a device: applying the manufacturing method of the graphite bipolar plate in the battery to a photocuring forming device to design a required photocuring forming device;
s2: and (3) curing: ultraviolet light appears at corresponding positions through a display screen below the modified graphite resin molding cabin according to the model slices of the graphite bipolar plate, and the modified graphite resin above the model slices is cured;
s3: and (3) finishing curing: repeating the operation after the solidification is finished until the model of the whole graphite bipolar plate is solidified to obtain the graphite bipolar plate;
s4: and (3) subsequent treatment: washing, surface curing and later polishing the prepared graphite bipolar plate;
preferably, in S1, the method for manufacturing a graphite bipolar plate in a flow cell and a fuel cell is applied to a photo-curing molding device, wherein the device includes a modified graphite resin storage bottle, a modified graphite resin molding cabin and a lifting platform, wherein the modified graphite resin storage bottle is fixed on the right side of the modified graphite resin molding cabin, the lower part of the bottle mouth is 5mm higher than the bottom of the modified graphite resin molding cabin, a threaded guide rail is fixed in the middle of the rear part of the modified graphite resin molding cabin, the lifting platform is provided thereon and can move up and down along with the threaded guide rail and can be connected with the bottom of the modified graphite resin molding cabin when moving to the lowest part, a transparent glass film is installed under the modified graphite resin molding cabin, a display screen is installed under the transparent glass film and is tightly combined, and the display screen below can be seen through the transparent glass film, the screw thread guide rail is arranged in the middle of the rear part of the modified graphite resin molding cabin and can be controlled by a motor, the molding platform is arranged on the screw thread guide rail and can move up and down along with the screw thread guide rail, the modified graphite resin storage bottle is arranged on the right side of the modified graphite resin molding cabin and can move up and down;
preferably, in S2, the modified graphite resin storage bottle is installed on the right side of the modified graphite resin molding cabin, and the modified graphite resin starts to flow into the modified graphite resin molding cabin until the modified graphite resin does not automatically flow downward, that is, the adding of the special resin is completed, wherein the special graphite resin is a liquid modified graphite resin formed by mixing modified graphite powder and resin materials in proportion, after the adding of the special resin is completed, the screw guide rail is started to drive the molding table to move downward until the distance between the lower side of the molding table and the bottom of the modified graphite resin molding cabin is 0.025mm (this data can be set by itself according to the precision requirement), the modified graphite resin above the molding cabin is cured by ultraviolet light appearing at corresponding positions on the display screen below the modified graphite resin molding cabin according to the model slice of the graphite bipolar plate, wherein the movement mechanism in the modified graphite resin molding device is controlled by the central processing unit, the method comprises the following steps of (1) guiding a designed bipolar plate drawing into a central processing unit according to a required format, driving corresponding parts to move by the central processing unit according to the requirements of the drawing, and printing the parts into the required bipolar plate, wherein modified graphite resin is used in the manufacturing process of the graphite bipolar plate, the graphite powder is modified graphite powder, and the modified graphite powder and a resin material are proportioned according to a proportion to obtain liquid special graphite resin;
preferably, in S3, after the curing is completed, the threaded guide rail drives the forming table to move upward by 0.025mm, the display screen again cures the modified graphite resin above the display screen by ultraviolet light appearing at a corresponding position according to the model slice of the graphite bipolar plate, and the operation is repeated until the model curing of the whole graphite bipolar plate is completed;
preferably, in S4, the graphite bipolar plate is taken off from the forming table, washed with 95% alcohol, placed under an ultraviolet lamp after washing to be surface-cured, and polished at a later stage to obtain a perfect graphite bipolar plate, and the modified graphite liquid can automatically flow out as required during the whole process.
Compared with the prior art, the invention has the beneficial effects that:
1. the process of manufacturing the bipolar plate does not need a die or a jig, so that the time for manufacturing the die or the jig and the cost for manufacturing the die or the jig are saved, the efficiency for manufacturing the graphite bipolar plate is improved, and a large amount of cost is reduced.
2. The invention can manufacture the inner runner and form the inner runner in one step, saves the cost for bonding, greatly improves the efficiency, ensures higher precision of the machined runner and avoids the problem of machining tolerance of the traditional process.
The invention aims to save the time for manufacturing the die or the jig and the cost for manufacturing the die or the jig by not using the die and the jig in the process of manufacturing the bipolar plate, improve the efficiency for manufacturing the graphite bipolar plate and reduce a large amount of cost, and simultaneously, the cost for bonding is saved by manufacturing the inner flow passage and molding at one time, the efficiency is greatly improved, the precision for processing the flow passage is higher, and the problem of processing tolerance of the traditional process is avoided.
Drawings
FIG. 1 is a flow chart of a method for integrally forming a graphite bipolar plate according to the present invention;
fig. 2 is a schematic structural diagram of a photocuring forming device in an integrated forming method of a graphite bipolar plate according to the present invention.
In the figure: 1 modified graphite resin molding cabin, 2 transparent glass film, 3 display screens, 4 molding platforms, 5 threaded guide rails and 6 modified graphite resin storage bottles.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example one
Referring to fig. 1-2, an integrated molding method of a graphite bipolar plate includes the steps of:
s1: designing a device: applying a manufacturing method of a graphite bipolar plate in a flow battery and a fuel cell on a light curing forming device, wherein the device comprises a modified graphite resin storage bottle 6, a modified graphite resin forming cabin 1 and a lifting platform, wherein the modified graphite resin storage bottle 6 is fixed on the right side of the modified graphite resin forming cabin 1, the lower part of the bottle mouth is 5mm higher than the bottom of the modified graphite resin forming cabin 1, a threaded guide rail 5 is fixed in the middle of the right rear part of the modified graphite resin forming cabin 1, the lifting platform is arranged on the threaded guide rail 5 and can move up and down along with the threaded guide rail 5, the threaded guide rail can be connected with the bottom of the modified graphite resin forming cabin 1 when moving to the lowest part, a transparent glass film 2 is arranged right below the modified graphite resin forming cabin 1, a display screen 3 is arranged right below the transparent glass film 2 and is tightly combined, the display screen 3 below the transparent glass film 2 can be seen, a threaded guide rail 5 is arranged in the middle right behind the modified graphite resin molding cabin 1 and can be controlled by a motor, a molding platform 4 is arranged on the threaded guide rail 5 and can move up and down along with the threaded guide rail 5, a modified graphite resin storage bottle 6 is arranged on the right side of the modified graphite resin molding cabin 1, and the modified graphite resin storage bottle 6 can move up and down;
s2: and (3) curing: in the step S2, the modified graphite resin storage bottle 6 is installed on the right side of the modified graphite resin molding cabin 1, and simultaneously the modified graphite resin starts to flow into the modified graphite resin molding cabin 1 until the modified graphite resin does not automatically flow downwards, i.e. the special resin addition is completed, wherein the special graphite resin is a liquid modified graphite resin formed by mixing modified graphite powder and resin materials in proportion, after the special resin addition is completed, the screw guide 5 is started to drive the molding table 4 to move downwards until the distance between the lower side of the molding table 4 and the bottom of the modified graphite resin molding cabin 1 is 0.025mm (the data can be set by self according to the precision requirement), the modified graphite resin above is cured by the ultraviolet light appearing at the corresponding position on the display screen 3 below the modified graphite resin molding cabin 1 according to the model slice of the graphite bipolar plate, the movement mechanism in the modified graphite resin molding device is controlled by a central processing unit, a designed bipolar plate drawing is guided into the central processing unit according to a required format, the central processing unit drives corresponding components to move according to the requirements of the drawing and prints the components into a required bipolar plate, modified graphite resin is used in the manufacturing process of the graphite bipolar plate, wherein the graphite powder is modified graphite powder, and the modified graphite powder and a resin material are proportioned according to a proportion to obtain liquid special graphite resin;
s3: and (3) finishing curing: after the curing is finished, the thread guide rail 5 drives the forming table 4 to move upwards by 0.025mm, the display screen 3 cures the modified graphite resin above the display screen again according to the ultraviolet light generated at the corresponding position of the model slice of the graphite bipolar plate, and the operation is repeated until the model curing of the whole graphite bipolar plate is finished;
s4: and (3) subsequent treatment: taking off graphite bipolar plate from forming table 4, washing with 95% concentration's alcohol, place it with it and carry out surface curing after washing the completion and handle in the ultraviolet lamp below to carry out the processing of polishing in later stage and obtain intact graphite bipolar plate, and whole in-process modified graphite liquid can be automatic as required flows.
Example two
Referring to fig. 1-2, an integrated molding method of a graphite bipolar plate includes the steps of:
s1: designing a device: applying a manufacturing method of a graphite bipolar plate in a flow battery and a fuel cell to a photocuring forming device, wherein the device comprises a modified graphite resin storage bottle 6, a modified graphite resin forming cabin 1 and a lifting platform, wherein the modified graphite resin storage bottle 6 is fixed on the right side of the modified graphite resin forming cabin 1, the lower part of the bottle mouth of the modified graphite resin storage bottle is 5mm higher than the bottom of the modified graphite resin forming cabin 1, a threaded guide rail 5 is fixed in the middle of the right rear part of the modified graphite resin forming cabin 1, and the lifting platform is arranged on the threaded guide rail 5 and can move up and down along with the threaded guide rail 5 and be connected with the bottom of the modified graphite resin forming cabin 1 when moving to the lowest part;
s2: and (3) curing: in the step S2, the modified graphite resin storage bottle 6 is installed on the right side of the modified graphite resin molding cabin 1, and simultaneously the modified graphite resin starts to flow into the modified graphite resin molding cabin 1 until the modified graphite resin does not automatically flow downwards, i.e. the special resin addition is completed, wherein the special graphite resin is a liquid modified graphite resin formed by mixing modified graphite powder and resin materials in proportion, after the special resin addition is completed, the screw guide 5 is started to drive the molding table 4 to move downwards until the distance between the lower side of the molding table 4 and the bottom of the modified graphite resin molding cabin 1 is 0.025mm (the data can be set by self according to the precision requirement), the modified graphite resin above is cured by the ultraviolet light appearing at the corresponding position on the display screen 3 below the modified graphite resin molding cabin 1 according to the model slice of the graphite bipolar plate, the movement mechanism in the modified graphite resin molding device is controlled by a central processing unit, a designed bipolar plate drawing is guided into the central processing unit according to a required format, the central processing unit drives corresponding components to move according to the requirements of the drawing and prints the components into a required bipolar plate, modified graphite resin is used in the manufacturing process of the graphite bipolar plate, wherein the graphite powder is modified graphite powder, and the modified graphite powder and a resin material are proportioned according to a proportion to obtain liquid special graphite resin;
s3: and (3) finishing curing: after the curing is finished, the thread guide rail 5 drives the forming table 4 to move upwards by 0.025mm, the display screen 3 cures the modified graphite resin above the display screen again according to the ultraviolet light generated at the corresponding position of the model slice of the graphite bipolar plate, and the operation is repeated until the model curing of the whole graphite bipolar plate is finished;
s4: and (3) subsequent treatment: taking off graphite bipolar plate from forming table 4, washing with 95% concentration alcohol, placing it below the ultraviolet lamp after washing and carrying out surface curing and handling to the processing of polishing in later stage obtains intact graphite bipolar plate, and whole in-process modified graphite liquid can be as required automatic outflow.
EXAMPLE III
Referring to fig. 1-2, an integrated molding method of a graphite bipolar plate includes the steps of:
s1: designing a device: applying a manufacturing method of a graphite bipolar plate in a flow battery and a fuel cell on a light curing forming device, wherein the device comprises a modified graphite resin storage bottle 6, a modified graphite resin forming cabin 1 and a lifting platform, wherein the modified graphite resin storage bottle 6 is fixed on the right side of the modified graphite resin forming cabin 1, the lower part of the bottle mouth is 5mm higher than the bottom of the modified graphite resin forming cabin 1, a threaded guide rail 5 is fixed in the middle of the right rear part of the modified graphite resin forming cabin 1, the lifting platform is arranged on the threaded guide rail 5 and can move up and down along with the threaded guide rail 5, the threaded guide rail can be connected with the bottom of the modified graphite resin forming cabin 1 when moving to the lowest part, a transparent glass film 2 is arranged right below the modified graphite resin forming cabin 1, a display screen 3 is arranged right below the transparent glass film 2 and is tightly combined, the display screen 3 below the transparent glass film 2 can be seen, a threaded guide rail 5 is arranged in the middle of the rear part of the modified graphite resin molding cabin 1 and can be controlled by a motor, a molding platform 4 is arranged on the threaded guide rail 5 and can move up and down along with the threaded guide rail 5, a modified graphite resin storage bottle 6 is arranged on the right side of the modified graphite resin molding cabin 1, and the modified graphite resin storage bottle 6 can move up and down;
s2: and (3) curing: in S2, the modified graphite resin storage bottle 6 is installed on the right side of the modified graphite resin molding cabin 1, and simultaneously the modified graphite resin starts to flow into the modified graphite resin molding cabin 1 until the modified graphite resin does not automatically flow downward, that is, the adding of the special resin is completed, wherein the special graphite resin is a liquid modified graphite resin formed by mixing modified graphite powder and resin materials in proportion, and after the adding of the special resin is completed, the screw guide 5 is started to drive the molding table 4 to move downward until the distance between the lower side of the molding table 4 and the bottom of the modified graphite resin molding cabin 1 is 0.025mm (the data can be set by self according to the precision requirement);
s3: and (3) finishing curing: after the curing is finished, the thread guide rail 5 drives the forming table 4 to move upwards by 0.025mm, the display screen 3 cures the modified graphite resin above the display screen again according to the ultraviolet light generated at the corresponding position of the model slice of the graphite bipolar plate, and the operation is repeated until the model curing of the whole graphite bipolar plate is finished;
s4: and (3) subsequent treatment: taking off graphite bipolar plate from forming table 4, washing with 95% concentration's alcohol, place it with it and carry out surface curing after washing the completion and handle in the ultraviolet lamp below to carry out the processing of polishing in later stage and obtain intact graphite bipolar plate, and whole in-process modified graphite liquid can be automatic as required flows.
Example four
Referring to fig. 1-2, an integrated molding method of a graphite bipolar plate includes the steps of:
s1: designing a device: applying a manufacturing method of a graphite bipolar plate in a flow battery and a fuel cell on a light curing forming device, wherein the device comprises a modified graphite resin storage bottle 6, a modified graphite resin forming cabin 1 and a lifting platform, wherein the modified graphite resin storage bottle 6 is fixed on the right side of the modified graphite resin forming cabin 1, the lower part of the bottle mouth is 5mm higher than the bottom of the modified graphite resin forming cabin 1, a threaded guide rail 5 is fixed in the middle of the right rear part of the modified graphite resin forming cabin 1, the lifting platform is arranged on the threaded guide rail 5 and can move up and down along with the threaded guide rail 5, the threaded guide rail can be connected with the bottom of the modified graphite resin forming cabin 1 when moving to the lowest part, a transparent glass film 2 is arranged right below the modified graphite resin forming cabin 1, a display screen 3 is arranged right below the transparent glass film 2 and is tightly combined, the display screen 3 below the transparent glass film 2 can be seen, a threaded guide rail 5 is arranged in the middle right behind the modified graphite resin molding cabin 1 and can be controlled by a motor, a molding platform 4 is arranged on the threaded guide rail 5 and can move up and down along with the threaded guide rail 5, a modified graphite resin storage bottle 6 is arranged on the right side of the modified graphite resin molding cabin 1, and the modified graphite resin storage bottle 6 can move up and down;
s2: and (3) curing: in the step S2, the modified graphite resin storage bottle 6 is installed on the right side of the modified graphite resin molding cabin 1, and simultaneously the modified graphite resin starts to flow into the modified graphite resin molding cabin 1 until the modified graphite resin does not automatically flow downwards, i.e. the special resin addition is completed, wherein the special graphite resin is a liquid modified graphite resin formed by mixing modified graphite powder and resin materials in proportion, after the special resin addition is completed, the screw guide 5 is started to drive the molding table 4 to move downwards until the distance between the lower side of the molding table 4 and the bottom of the modified graphite resin molding cabin 1 is 0.025mm (the data can be set by self according to the precision requirement), the modified graphite resin above is cured by the ultraviolet light appearing at the corresponding position on the display screen 3 below the modified graphite resin molding cabin 1 according to the model slice of the graphite bipolar plate, the movement mechanism in the modified graphite resin molding device is controlled by a central processing unit, a designed bipolar plate drawing is guided into the central processing unit according to a required format, the central processing unit drives corresponding components to move according to the requirements of the drawing and prints the components into a required bipolar plate, modified graphite resin is used in the manufacturing process of the graphite bipolar plate, wherein the graphite powder is modified graphite powder, and the modified graphite powder and a resin material are proportioned according to a proportion to obtain liquid special graphite resin;
s3: and (3) finishing curing: after the curing is finished, the thread guide rail 5 drives the forming table 4 to move upwards by 0.025mm, the display screen 3 again generates ultraviolet light at the corresponding position according to the model slice of the graphite bipolar plate to cure the modified graphite resin above the display screen, and the operation is repeated until the model curing of the whole graphite bipolar plate is finished.
An integrated molding method of a graphite bipolar plate according to one of the first, second, third and fourth examples was tested, and the following results were obtained:
| example one | Example two | EXAMPLE III | Example four | |
| Accuracy of measurement | 95％ | 90％ | 92％ | 88％ |
| Cost of | 2 yuan/g | 2.5 yuan/g | 2.2 yuan/g | 2.6 yuan/g |
The integrated forming method for preparing the graphite bipolar plate in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment has the advantages that compared with the existing method, the precision is obviously improved, the cost is obviously reduced, and the first embodiment is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. An integrated molding method of a graphite bipolar plate is characterized by comprising the following steps:
s1: designing a device: applying the manufacturing method of the graphite bipolar plate in the battery to a photocuring forming device to design a required photocuring forming device;
s2: and (3) curing: ultraviolet light appears at corresponding positions according to the model slices of the graphite bipolar plate, and the modified graphite resin above the model slices is cured;
s3: and (3) finishing curing: repeating the operations after the solidification is finished until the model of the whole graphite bipolar plate is solidified to obtain the graphite bipolar plate;
s4: and (3) post-treatment: and (4) washing, surface curing and later polishing the prepared graphite bipolar plate.
2. An integrated molding method of a graphite bipolar plate as claimed in claim 1, wherein in S1, the manufacturing method of the graphite bipolar plate in the flow battery and the fuel cell is applied on the photo-curing molding device, wherein the device comprises the modified graphite resin storage bottle (6), the modified graphite resin molding cabin (1) and the lifting platform.
3. The integrated molding method of a graphite bipolar plate according to claim 2, wherein the modified graphite resin storage bottle (6) is fixed on the right side of the modified graphite resin molding cabin (1), the lower part of the bottle mouth is 5mm higher than the bottom of the modified graphite resin molding cabin (1), the elevating platform is connected with the threaded guide rail (5), the threaded guide rail (5) is fixed in the middle right behind the modified graphite resin molding cabin (1), and the elevating platform moves up and down along with the threaded guide rail (5) and is connected with the bottom of the modified graphite resin molding cabin (1) when moving to the lowest part.
4. An integrated molding method of a graphite bipolar plate according to claim 3, wherein a transparent glass film (2) is installed right under the modified graphite resin molding chamber (1), a display screen (3) is installed right under the transparent glass film (2) and is tightly combined, the display screen (3) below can be seen through the transparent glass film (2), a screw guide (5) is installed right in the middle behind the modified graphite resin molding chamber (1) and can be controlled by a motor, a molding table (4) is installed on the screw guide (5) and can move up and down along with the screw guide (5), a modified graphite resin storage bottle (6) is installed on the right side of the modified graphite resin molding chamber (1), and the modified graphite resin storage bottle (6) can move up and down.
5. The method of claim 1, wherein in step S2, the storage bottle (6) of modified graphite resin is installed on the right side of the molding chamber (1) of modified graphite resin, and the modified graphite resin is started to flow into the molding chamber (1) of modified graphite resin until the modified graphite resin does not flow downward automatically, i.e. the adding of the special resin is completed, wherein the special resin is a liquid modified graphite resin prepared by mixing modified graphite powder and resin materials in proportion, after the adding of the special resin is completed, the thread guide (5) is started to drive the molding table (4) to move downward until the distance between the lower side of the molding table (4) and the bottom of the molding chamber (1) of modified graphite resin is 0.025mm, and the ultraviolet light is generated at the corresponding position through the display screen (3) below the molding chamber (1) of modified graphite resin according to the model slice of the graphite to perform the adding of the modified graphite resin above the molding chamber And (5) curing.
6. An integrated molding method of a graphite bipolar plate as claimed in claim 5, wherein a moving mechanism in the modified graphite resin molding device is controlled by a central processing unit, a designed bipolar plate drawing is guided into the central processing unit according to a required format, the central processing unit drives corresponding components to move according to the drawing requirement and prints the components into the required bipolar plate, the modified graphite resin is used in the manufacturing process of the graphite bipolar plate, wherein the graphite powder is the modified graphite powder, and the modified graphite powder and the resin material are proportioned according to a proportion to obtain the liquid special graphite resin.
7. An integrated molding method of a graphite bipolar plate as claimed in claim 4, wherein in said S3, after the completion of the curing, the screw guide (5) with the molding table (4) moves upward by 0.025mm, the display screen (3) cures the modified graphite resin thereon again by the presence of UV light at the corresponding position according to the mold cut of the graphite bipolar plate, and the operation is repeated until the mold curing of the entire graphite bipolar plate is completed.
8. The method of claim 1, wherein in step S4, the graphite bipolar plate is removed from the forming table (4), washed with 95% ethanol, placed under an uv lamp for surface curing after washing, and polished to obtain a perfect graphite bipolar plate, and the modified graphite liquid flows out automatically as required.
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| CN101071871A (en) * | 2007-06-05 | 2007-11-14 | 山东大学 | Composite bipolar plate for miniature fuel cell and its preparing method |
| CN103707510A (en) * | 2013-12-29 | 2014-04-09 | 北京工业大学 | Large-breadth LED (light-emitting diode) lattice screen exposure rapid-forming method |
| CN112909282A (en) * | 2021-01-29 | 2021-06-04 | 江苏大学 | Fuel cell bipolar plate and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071871A (en) * | 2007-06-05 | 2007-11-14 | 山东大学 | Composite bipolar plate for miniature fuel cell and its preparing method |
| CN103707510A (en) * | 2013-12-29 | 2014-04-09 | 北京工业大学 | Large-breadth LED (light-emitting diode) lattice screen exposure rapid-forming method |
| CN112909282A (en) * | 2021-01-29 | 2021-06-04 | 江苏大学 | Fuel cell bipolar plate and manufacturing method thereof |
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