CN213660455U

CN213660455U - Air electrode production equipment

Info

Publication number: CN213660455U
Application number: CN202022617094.0U
Authority: CN
Inventors: 徐献芝
Original assignee: University of Science and Technology of China USTC
Current assignee: University of Science and Technology of China USTC
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-07-09
Anticipated expiration: 2030-11-12

Abstract

The utility model provides an air electrode production facility, include: crowded material coating mechanism (3) and spraying mechanism (13), crowded material coating mechanism (3) are used for scribbling the waterproof layer on the mass flow body, and spraying mechanism (13) are used for the spraying catalysis layer on waterproof ventilative layer, and the mass flow body is scribbled the waterproof layer along work plane in proper order, and the catalysis layer is gone up in the spraying, and then obtains air electrode. Through the utility model discloses an air electrode production facility can automize the waterproof ventilative air electrode of high quality of high-efficient continuous production.

Description

Air electrode production equipment

Technical Field

The utility model relates to a metal fuel cell electrode technical field especially relates to an air electrode production facility.

Background

The research of metal fuel cells is currently receiving general attention at home and abroad, and the metal fuel cells are closer to the traditional supply and use mode of fossil energy sources compared with lead storage and lithium ion batteries in the mode of generating electric energy by consuming anode metal. Therefore, it is considered as a new energy form that can replace fossil energy most in the future, but as the development of metal fuel cells is still in the beginning stage, enterprises that can commercialize them at home and abroad are awarded a lot, and the core problem is the development and manufacture of air electrodes.

At present, the air electrode preparation process disclosed mostly starts from the preparation process of the air electrode, and often has the problems of complex preparation process, difficulty in controlling details and the like, and the problem of how to realize the rear-end production is not considered in the development process of the air electrode, so that most of reported air electrode preparation processes are only limited to laboratory preparation.

In the production equipment of the air electrode reported occasionally, the solution in the waterproof breathable layer and the catalytic layer is removed by adopting a spraying and vacuum filtration mode, and then the air electrode is obtained by rolling. However, for the air electrode, the waterproof breathable layer plays a waterproof and corrosion-resistant role in the air electrode, so a certain thickness is generally required to be achieved, and the waterproof breathable layer prepared in a spraying manner is usually technically low in thickness, so that the air electrode is insufficient in waterproofness and poor in stability. Or the catalytic layer powder is mixed and then fed and rolled in a vibration mode to obtain the catalytic layer film, the technical scheme has the defects that the continuity of the powder vibration mode is poor, materials can be layered when various materials exist in the catalytic layer powder, and dust is easily blown during production in an open environment.

Since the matched production equipment and technology of the air electrode are not developed, the production equipment of other types (such as lithium battery, lead storage, hydrogen and oxygen) of battery production equipment is often adopted for part of commercialized air electrodes and is manually completed in multiple steps, which causes low production efficiency, and meanwhile, the air electrode production is completed in multiple steps, and the quality of the obtained air electrode is further uneven due to excessive manual control factors. The above problems have all seriously hindered the development and commercialization of metal fuel cells.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To solve the technical problems at present, the utility model provides an air electrode production facility and method for at least part of technical problem more than solve.

(II) technical scheme

The utility model provides an air electrode production facility, include: crowded material coating mechanism 3 includes: the device comprises a first internal cavity 4, a program-controlled hydraulic device 5 and a discharge chute 6, wherein a piston 41 is arranged in the first internal cavity 4, the piston 41 separates the first internal cavity 4 into an upper cavity and a lower cavity, the program-controlled hydraulic device 5 is connected with the piston 41 through a telescopic rod 51, waterproof layer slurry containing a binder is filled in the lower cavity, the discharge chute 6 is arranged on the wall of the lower cavity, and the extruding and coating mechanism 3 is used for coating a waterproof layer on a current collector; the spray mechanism 13 includes: the spraying mechanism 13 is used for spraying a catalyst layer on the waterproof breathable layer, and the waterproof breathable layer is obtained by drying a waterproof layer; the working plane is a processing plane of the current collector, and the current collector is processed along the working plane to obtain the air electrode.

Optionally, the air electrode production equipment further includes a first rolling mechanism 8, the first rolling mechanism 8 is composed of at least two continuously arranged vertical rolling presses, each vertical rolling press is provided with a gap adjusting device 9, and gaps between two rollers of each vertical rolling press gradually decrease along the advancing direction of the current collector.

Optionally, the air electrode production plant further comprises a tunnel furnace 10, the tunnel furnace 10 comprising: a second conveying mechanism 12, a second heating device 25 and a program setting device 26, wherein the second heating device 25 and the second conveying mechanism 12 are positioned on one side of the working plane or on two sides of the working plane respectively.

Optionally, the tunnel furnace 10 further comprises a hot air supply device 11, the hot air supply device 11 being used to supply the heat generated by the second heating device 25 to the work plane.

Optionally, the spraying mechanism 13 further comprises a stirring device 14, wherein the stirring device 14 comprises a motor 141, a rotating shaft 142 and a stirring blade 143, and the stirring blade 143 is located in the second internal cavity 15.

Optionally, the air electrode production apparatus further comprises a second rolling mechanism 19, the second rolling mechanism 19 is a vertical rolling machine, and the vertical rolling machine comprises the gap adjusting device 9.

Optionally, the air electrode production apparatus further includes a cutting mechanism 20, and the cutting mechanism 20 includes: the cutting device 21, the guiding deviation correcting device 22, the receiving tray 23 and the air compressor 24, wherein the guiding deviation correcting device 22 is processed in sequence before the cutting device 21, the cutting device 21 is located on one side of the working plane, and the receiving tray 23 is connected with the working plane.

Optionally, the air electrode production equipment further comprises an unwinding mechanism 1, and the unwinding mechanism 1 is provided with an air expansion shaft for controlling the tension of the current collector.

Optionally, the length of the notch of the discharge chute 6 is consistent with the width of the current collector, and the width and the length of the notch of the discharge chute 6 are adjustable.

Optionally, the air electrode production apparatus further includes a guide roller 2 and a first conveyance mechanism 7.

(III) advantageous effects

1. The utility model provides a waterproof ventilative layer coats with the thick liquids that contain the binder, through first roll-in mechanism control thickness and closely knit nature, the waterproof layer that obtains is complete, continuous. The defects of the waterproof breathable layer are effectively reduced, and the waterproof function of the waterproof breathable layer is guaranteed.

2. The utility model discloses well spraying mechanism is used for guaranteeing the catalyst homogeneity at continuous spraying in-process including the cavity of area stirring. Near the working plane of spraying device below is equipped with heating device, heats the dispersant in the catalyst thick liquids on with the spraying through to the mass flow body and waterproof ventilative layer composite bed and volatilizes fast, guarantees high-efficient production.

3. The utility model provides a first roll squeezer mechanism contains two at least vertical roll-in equipment, and has the heating function, and the waterproof layer gradually drying that will coat on the mass flow body in the operation is waterproof ventilative layer, and the roll-in of two at least vertical roll-in equipment that rethread roll-in gap reduces in proper order is with waterproof ventilative lamination thin to certain thickness and closely knit degree. Through the procedures, the waterproof breathable layer and the current collector have good embedding degree and good waterproof capability.

4. The utility model provides an air electrode production facility to the mass flow body in the air electrode necessary constitution is as the carrier of serialization production, for prior art scheme, avoids introducing some carrier films, has both practiced thrift manufacturing cost, has avoided loaded down with trivial details deciduate, the transfer process in later stage simultaneously.

5. The utility model discloses well tunnel furnace is used for further drying with the waterproof ventilative layer of mass flow body complex, gets rid of inside remaining liquid on the one hand and reaches the dry state with waterproof ventilative layer and make preparation for the spraying, leaves the microcosmic pore in waterproof ventilative in situ portion through the volatile process of inside liquid on the other hand, guarantees the air permeability on waterproof ventilative layer.

6. The utility model discloses well second roll presses mechanism to be used for controlling the air electrode semi-manufactured goods thickness that obtains, because the heating process of front track probably arouses semi-manufactured goods deformation, the catalyst on the spraying is in a fluffy state simultaneously, need carry out the plastic to it to the uniformity and the appearance characteristic of air electrode have been guaranteed to the compaction catalysis layer.

7. The utility model discloses well cutting mechanism arranges the tail end in, can tailor continuous air electrode to the target dimension through the air compressor machine drive cylinder with drive shearing mechanism and obtain the finished product, improves whole production efficiency, is different from traditional rolling end simultaneously, cuts out the back and separately places the destruction of rolling process to the electrode surface among the prior art.

Through the utility model discloses an air electrode production facility and method can automize high-efficient continuous production high quality waterproof ventilative air electrode.

Drawings

Fig. 1 schematically shows the air electrode production equipment that the embodiment of the utility model provides.

Fig. 2 schematically illustrates an air electrode production method provided by an embodiment of the present invention.

[ description of reference ]

1-unwinding mechanism

2-guide roll

3-extruding and coating mechanism

4-first internal Cavity

41-piston

5-program control type hydraulic device

51-Telescopic rod

6-discharge chute

7-first transfer mechanism

8-first rolling mechanism

9-gap adjusting device

10-tunnel furnace

11-Hot air delivery device

12-second transfer mechanism

13-spraying mechanism

14-stirring device

141-electric machine

142-rotating shaft

143-stirring blade

15-second internal cavity

16-spraying device

17-electric displacement device

18-first heating device

19-second rolling mechanism

20-cutting mechanism

21-cutting device

22-guiding deviation correcting device

23-receiving tray

24-air compressor

25-second heating device

26-program setting device

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the air electrode production apparatus according to the embodiment of the present invention includes: the current collector comprises an unwinding mechanism 1, a material extruding and coating mechanism 3, a guide roll 2, a first conveying mechanism 7, a first rolling mechanism 8, a tunnel furnace 10, a spraying mechanism 13, a second rolling mechanism 19 and a cutting mechanism 20 which are sequentially connected, wherein the current collector is discharged from the unwinding mechanism 1 and is processed along the working plane to obtain an air electrode, the unwinding mechanism 1 is connected with the guide roll 2, and the first conveying mechanism 7 and the material extruding and coating mechanism 3 are respectively positioned on two sides of the working plane.

The current collector in some embodiments of the present invention is an essential component of the air electrode, and may be, for example, a foam-like or mesh-like metal, such as nickel, which has good corrosion resistance. Because the metal is in a foam shape or a net shape and has certain pores, the current collector has good air permeability. And based on good intensity and toughness of the metal material, the current collector can be used as a carrier for continuous production, and compared with the prior art, the current collector avoids introducing some carrier films, so that the production cost is saved, and meanwhile, the later-stage complex demoulding and transferring procedures are avoided.

The unwinding mechanism 1 is provided with an air expansion shaft for controlling the tension of the current collector.

In some embodiments, the coiled current collector with a fixed width is mounted on an air expansion shaft with tension control of the unwinding mechanism 1, and the current collector roll is completely fixed through the air expansion shaft, so that the unwinding process advances along a linear direction, and meanwhile, the matched tension control structure of the current collector can ensure that the current collector is always in a stretched state in the unwinding process.

The extrusion coating mechanism 3 includes, for example: the device comprises a first internal cavity 4, a program-controlled hydraulic device 5 and a discharge chute 6, wherein a piston 41 is arranged in the first internal cavity 4, the first internal cavity 4 is isolated into an upper cavity and a lower cavity by the piston 41, the program-controlled hydraulic device 5 is connected with the piston 41 through a telescopic rod 51, waterproof layer slurry containing a binder is loaded in the lower cavity, the discharge chute 6 is arranged on the wall of the lower cavity, and the extruding coating mechanism 3 is used for coating a waterproof layer on a current collector.

The binder used in some embodiments of the present invention may be, for example, PTFE emulsion, which is capable of undergoing emulsion breaking polymerization when encountering ethanol solvent to form gel-like adhesive with each other, and which is distributed in the slurry to bond the carbon material and the carbon material into flexible polymer slurry (similar to dough state), and which can be extruded into a certain shape for extruding in the extruding and coating mechanism 3.

Meanwhile, PTFE has strong hydrophobicity (commonly used for a non-stick pan coating), and is uniformly mixed in a waterproof layer carbon material, so that the waterproof layer has hydrophobicity, the surface tension of liquid contact is increased, and the waterproof effect is achieved.

The length of the notch of the discharge groove 6 is consistent with the width of the current collector, and the width and the length of the notch of the discharge groove 6 are adjustable.

In some embodiments, the current collector passes through the guide roller and then advances along the working plane of the conveyor belt, an extruding and coating mechanism 3 is arranged above the conveying mechanism, the extruding and coating mechanism is provided with a program-controlled hydraulic device 5, the first internal cavity 4 is filled with mixed waterproof layer slurry containing a binder, a discharge chute 6 with a certain notch width and length is arranged below the first internal cavity, during operation, the extruding and coating mechanism coats the internal semisolid slurry from the discharge chute 6 to the upper surface of the current collector in a continuous state with a certain thickness through continuous pressurization, the width of the current collector is consistent with the notch length of the discharge chute 6 of the extruding and coating mechanism 3, and the complete coverage of the current collector is ensured while the slurry loss is reduced. The width and the length of the notch of the discharge chute 6 are adjustable, so that the discharge chute can adapt to the production of air electrodes with different process thicknesses and width requirements.

The spraying mechanism 13 includes, for example: the spraying mechanism 13 is used for spraying a catalyst layer on a waterproof breathable layer, and the waterproof breathable layer is obtained by drying a waterproof layer. The spraying mechanism 13 further comprises a stirring device 14, wherein the stirring device 14 comprises a motor 141, a rotating shaft 142 and a stirring blade 143, and the stirring blade 143 is located in the second internal cavity 15.

Specifically, the spraying mechanism 13 includes, for example: a stirring device 14 for continuously stirring the catalyst layer slurry in the second internal cavity 15, a spraying device 16 for driving the catalyst layer slurry to be sprayed on the surface of the waterproof layer by high-pressure gas, and an electric displacement device 17 and a first heating device 18 for driving the spraying device 16 to perform scanning spraying by a motor. When the composite bed is come out by tunnel furnace 10, get into spraying mechanism 13 after, the current collector one side with 18 laminating of first heating device, heat the composite bed at the spraying in-process, avoid catalyst thick liquids to produce the hydrops at the composite bed. The spraying device 16 and the electric displacement device 17 cooperate to quickly spray the catalyst slurry in the inner cavity onto the waterproof breathable layer. Because the speed of the electric displacement is far greater than the advancing speed of the current collector, the area swept by the spraying device 16 in unit time is constant, and the uniformity of the catalyst slurry spraying is ensured. The thickness of the catalytic layer is controlled by controlling the travel speed of the composite layer and the spraying speed of the spraying device 16 and the displacement speed of the electrokinetic displacement device 17. The spraying means of the spraying device 16 may include various means such as ultrasonic, electrostatic, pneumatic, and the like.

The first rolling mechanism 8 is composed of, for example, at least two vertical rolling machines arranged in series, each vertical rolling machine is provided with a gap adjusting device 9, and gaps between two rollers of the vertical rolling machine gradually decrease along the advancing direction of the current collector.

In some embodiments, the first rolling mechanism 8 may be provided with 3 vertical rolling machines arranged in series, for example, by adjusting the gap adjusting device 9 provided on each vertical rolling machine, the gap between the two rollers of the vertical rolling machine decreases gradually along the traveling direction of the current collector. This vertical roller press still has the heating function, the waterproof ventilative layer of coating on the mass flow body is dry gradually in the operation, behind the degressive roll-in equipment of above-mentioned gap width of rethread, by compressing step by step to certain thickness and closely knit degree, realize the gomphosis each other of waterproof ventilative layer and mass flow body simultaneously, form the composite bed of integration, it is complete, continuous with the inseparable waterproof layer of mass flow body combination, the defect on the waterproof ventilative layer of effectual reduction produces, guarantees the waterproof function on waterproof ventilative layer.

The tunnel furnace 10 includes, for example: a second conveying mechanism 12, a second heating device 25 and a program setting device 26, wherein the second heating device 25 and the second conveying mechanism 12 are positioned on one side of the working plane or on two sides of the working plane respectively. The tunnel furnace 10 also comprises a hot air supply device 11, the hot air supply device 11 being used to supply the heat generated by the second heating device 25 to the work plane.

In some embodiments, the composite layer obtained by continuous rolling is further conveyed to the tunnel furnace 10, the second conveying mechanism 12 is arranged inside the tunnel furnace 10, the second heating device 25 and the hot air conveying device 11 are arranged on the upper portion inside the tunnel furnace 10, the temperature can be set by the program setting device 26, after the composite layer is formed, a certain liquid content is still present inside the waterproof layer, and the hot air conveying device 11 accelerates the air convection on the surface of the composite layer of the waterproof breathable layer and the current collector, so that the tunnel furnace can rapidly dry the residual liquid inside, and meanwhile, microscopic pores are formed in the waterproof breathable layer due to the volatilization of the liquid, and the air permeability of the air electrode is ensured. Meanwhile, the hot air conveying device 11 enables the composite layer to be heated more uniformly, and the defect of the composite layer caused by nonuniform heating is also avoided. The dried waterproof breathable layer is more beneficial to next-step catalytic layer spraying.

The second rolling mechanism 19 is a vertical roller press comprising a gap adjusting device 9.

In some embodiments, the composite layer after the catalyst layer is sprayed may partially deform due to the heat of the previous steps, and the density of the catalyst layer on the spraying is not high, so that the composite layer may fall off due to continuous washing of the electrolyte in the using process.

The cutting mechanism 20 includes, for example: the cutting device 21, the guiding deviation correcting device 22, the receiving tray 23 and the air compressor 24, wherein the guiding deviation correcting device 22 is processed in sequence before the cutting device 21, the cutting device 21 is located on one side of the working plane, and the receiving tray 23 is connected with the working plane.

In some embodiments, after the composite layer is rolled and reshaped, the automatic cutting device is arranged at the rear end, and the air compressor drives the air cylinder to drive the cutting device, so that the continuous air electrode can be cut to a target size to obtain a finished product, the overall production efficiency is improved, and the damage to the surface of the electrode in the rolling process in the prior art is avoided. Before cutting, a guiding deviation-correcting device is arranged to finely adjust the advancing direction of the composite layer to meet the cutting requirement, and the electrode plates with irregular shapes (such as rhombus, parallelogram and other non-rectangular or non-square shapes) are prevented from being cut due to the deviation of the advancing direction.

To sum up, the embodiment of the utility model provides an air electrode production facility is provided. By arranging the unreeling mechanism 1, the guide roll 2, the extruding coating mechanism 3, the first conveying mechanism 7, the first rolling mechanism 8, the tunnel furnace 10, the spraying mechanism 13, the second rolling mechanism 19, the cutting mechanism 20 and the like, the continuous, efficient and high-quality production of the air electrode of the fuel cell can be realized.

As shown in fig. 2, an embodiment of the present invention further provides an air electrode production method, for example, including:

s201, unreeling the coiled current collector through the unreeling mechanism 1, and guiding the coiled current collector to the first conveying mechanism 7 through the guide roller 2.

The size of mass flow body can be set for according to air electrode's practical application, the utility model discloses do not restrict, for example the utility model discloses an embodiment, be 120mm with the width, thickness is the epaxial fixing of air expansion of 0.3 mm's lapping mass flow body installation to unwinding mechanism 1, makes the process of unreeling advance along linear direction. The tension is controlled to be 10-30N, and the current collector is guaranteed to be in a stretched straight state all the time in the unreeling process.

The current collector enters the guide roller 2, is driven by the motor to rotate, forwards pushes the current collector, controls the roller speed, and guides the unwound current collector to a production working plane. The specific roller speed can be set according to practical application, the utility model discloses do not do the restriction, for example, in the utility model discloses an embodiment, the roller speed design is 1 m/min.

S202, the current collector is conveyed to the lower side of the extruding and coating mechanism 3 through the first conveying mechanism 7, and meanwhile, the extruding and coating mechanism 3 coats the waterproof layer slurry containing the binder on the surface of the current collector to form a waterproof layer.

And the current collector passes through the guide roller and then travels along the plane of the conveying belt, the conveying speed is matched with the speed of the guide roller, and the speed is adjusted to 1 m/min. Adjust crowded material coating mechanism 3's in transport mechanism top hydraulic means speed of pushing down for example 1.5mm/min, slowly extrude the thick liquids in first internal cavity 4, adjust the notch width of blown down tank 6 for example 10mm, length is 120mm, and during the operation, crowded material coating mechanism passes through blown down tank 6 coating with waterproof layer thick liquids to the mass flow body upper surface through continuous pressurization, has guaranteed the complete coverage of mass flow body, reduces the thick liquids loss simultaneously.

And S203, the current collector coated with the waterproof layer is rolled step by the first rolling mechanism 8 to obtain a first composite layer containing the current collector and the waterproof layer.

The current collector coated with slurry with a certain thickness is conveyed between two rollers of a first rolling mechanism 8, a composite layer is driven to move forwards through the occlusal force between the two rollers, the rolling mechanism consists of 4 vertical double rollers, the speed of the four rollers is adjusted to be consistent with that of a guide roller and is 1m/min, the width of a gap is gradually reduced according to 1.1mm, 1.0mm, 0.9mm and 0.8mm, and the composite layer is gradually compressed to a certain thickness and compactness after passing through rolling equipment with the continuously reduced gap width.

And S204, the first composite layer passes through the tunnel furnace 10, residual liquid in the waterproof layer is dried, the waterproof layer is changed into a waterproof breathable layer containing microscopic pores, and a second composite layer containing a current collector and the waterproof breathable layer is obtained.

The composite layer obtained by continuous rolling is conveyed to the tunnel furnace 10, the rotating speed of the second conveying mechanism 12 inside the tunnel furnace is controlled to be consistent with the speed of the guide roller and is 1m/min, the temperature is set to be 80-100 ℃ for example through the program setting device 26, an air supply switch of the hot air conveying device 11 is turned on, the composite layer passes through the tunnel furnace 10 at a constant speed, the waterproof layer is dried quickly, a micro pore channel with a certain scale is formed, the air permeability of the air electrode is guaranteed, and the dried waterproof and breathable layer is more beneficial to next-step catalytic layer spraying.

S205, the second composite layer enters the spraying mechanism 13, a catalytic layer is uniformly sprayed on the surface of the second composite layer under the synergistic effect of the spraying device 16 and the electric displacement device 17, and meanwhile, the first heating device 18 heats and dries the second composite layer and the catalytic layer to obtain the membrane electrode containing the catalytic layer and the second composite layer.

Catalyst, binder, dispersant are added to the second internal cavity 15, controlling the slurry concentration to be, for example, 30 mg/mL. The stirring device 14 is started to continuously stir the slurry of the catalyst layer in the cavity, the uniformity of the slurry is ensured, the stirring rotating speed is 300-500R/min, the temperature of the first heating device 18 is set to be 80-100 ℃ for example, when the composite layer comes out from the tunnel furnace 10 and enters the spraying mechanism 13, one surface of the current collector is close to the first heating device 18, and the catalyst slurry is prevented from generating liquid loading on the composite layer.

Setting the flow of the spraying device 16 to 120mL/min in the spraying process, driving the spraying part to perform scanning spraying by a motor, setting a scanning interval for the electric displacement device 17, and setting the scanning speed to 1200-1500 cm²And/min. The spraying mechanism 13 forms a catalytic layer on the surface of the waterproof layer rapidly through the cooperation of the first heating device 18, the spraying device 16 and the electric displacement device 17. The thickness of the catalytic layer is controlled by controlling the advancing speed of the composite layer and the spraying flow rate and scanning speed of the spraying device.

S206, after the membrane electrode passes through the second rolling mechanism 19, the catalyst layer is compacted, the advancing direction of the membrane electrode is corrected through the guiding deviation correcting device 22, and finally the air electrode with the target size is obtained through cutting through the cutting device 21.

The sprayed membrane electrode enters a second rolling mechanism 19, the speed of the control roller is matched with that of the guide roller, is 1m/min, the width of the roller gap is 0.8mm, and the electrode sprayed with the catalytic layer is rolled in a single time, so that the compactness of the catalytic layer is improved, the catalytic layer is prevented from loosening and falling off in the use process of the electrode, and the thickness of the membrane electrode is subjected to standardized control.

The membrane electrode rolled by the second rolling mechanism 19 enters the cutting mechanism 20 after correcting the traveling direction, the traction speed is set to be consistent with the speed of the guide roller by a program and is 1m/min, the cutting length is 120mm for example, and the electrode is continuously cut to obtain the air electrode with the finished product size of 120 x 120mm in the embodiment.

The above-mentioned embodiments, which further illustrate the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and all process parameters can be determined according to actual production or actual requirements, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An air electrode production apparatus, characterized by comprising:

crowded material coating mechanism (3) includes: the device comprises a first internal cavity (4), a program-controlled hydraulic device (5) and a discharge chute (6), wherein a piston (41) is arranged in the first internal cavity (4), the piston (41) isolates the first internal cavity (4) into an upper cavity and a lower cavity, the program-controlled hydraulic device (5) is connected with the piston (41) through a telescopic rod (51), waterproof layer slurry containing a binder is arranged in the lower cavity, the discharge chute (6) is arranged on the wall of the lower cavity, and the extrusion coating mechanism (3) is used for coating the waterproof layer on a current collector;

a spray mechanism (13) comprising: the device comprises a second internal cavity (15), a spraying device (16), an electric displacement device (17) and a first heating device (18), wherein the spraying device (16) is installed on the electric displacement device (17), the electric displacement device (17) and the first heating device (18) are positioned on one side of a working plane or respectively positioned on two sides of the working plane, the spraying mechanism (13) is used for spraying a catalytic layer on a waterproof breathable layer, and the waterproof breathable layer is obtained by drying the waterproof layer;

the working plane is a processing plane of the current collector, and the current collector is processed along the working plane to obtain the air electrode.

2. The air electrode production equipment according to claim 1, further comprising a first rolling mechanism (8), wherein the first rolling mechanism (8) is composed of at least two vertical roller presses arranged in series, each vertical roller press is provided with a gap adjusting device (9), gaps between two rollers of the vertical roller presses are gradually decreased along the traveling direction of the current collector, and the process of the first rolling mechanism (8) is positioned after the process of the extrusion coating mechanism (3).

3. The air electrode production plant according to claim 1, characterized in that it further comprises a tunnel furnace (10), said tunnel furnace (10) comprising: a second conveying mechanism (12), a second heating device (25) and a program setting device (26), wherein the second heating device (25) and the second conveying mechanism (12) are positioned on one side of the working plane or respectively positioned on two sides of the working plane.

4. An air electrode production plant according to claim 3, characterized in that the tunnel furnace (10) further comprises a hot air delivery device (11), the hot air delivery device (11) being adapted to deliver the heat generated by the second heating device (25) onto the work plane.

5. The air electrode production apparatus according to claim 1, wherein the spraying mechanism (13) further includes an agitation device (14), wherein the agitation device (14) includes: a motor (141), a rotating shaft (142) and a stirring blade (143), the stirring blade (143) being located in the second internal cavity (15).

6. The air electrode production apparatus according to claim 1, further comprising a second rolling mechanism (19), wherein the second rolling mechanism (19) is a vertical rolling press, and wherein the vertical rolling press comprises a gap adjusting device (9).

7. The air electrode production apparatus according to claim 1, further comprising a cutting mechanism (20), the cutting mechanism (20) comprising: the cutting device (21), the guiding deviation correcting device (22), the receiving tray (23) and the air compressor (24) are arranged, the processing sequence of the guiding deviation correcting device (22) is prior to the cutting device (21), the cutting device (21) is located on one side of the working plane, and the receiving tray (23) is connected with the working plane.

8. The air electrode production equipment according to claim 1, further comprising an unwinding mechanism (1), wherein the unwinding mechanism (1) has an air expansion shaft for controlling the tension of the current collector.

9. The air electrode production equipment according to claim 1, wherein the length of the notch of the discharge chute (6) is consistent with the width of the current collector, and the width and the length of the notch of the discharge chute (6) are adjustable.

10. The air electrode production apparatus according to claim 1, further comprising a guide roller (2) and a first conveyance mechanism (7).