Device for microwave sintering battery plates

Abstract

The invention discloses a device for microwave sintering battery plates, and relates to the technical field of battery plates. A uniformly rotating disc is provided on a mobile platform, and a battery plate mold is provided on the uniformly rotating disc; a mounting frame is provided above the mobile platform, a powder loading mechanism receives the material powder and evenly sprinkles the material powder into the battery plate mold through a powder spreading assembly at its lower end; a powder scraping plate contacts the battery plate mold and scrapes off excess material powder during the movement of the battery plate mold; a plate placing mechanism pushes the plastic plate inside it to fall onto the battery plate mold to cover the material powder; a microwave sintering mechanism moves down to press the plastic plate and sinter the material powder through microwave heating to form a battery plate. The invention can perform high-temperature sintering in a short time, greatly improving the manufacturing efficiency; the invention can also reduce the amount of conductive material used in the composite fuel cell plate while maintaining good plate performance. Thus, low-cost and high-efficiency manufacturing of lightweight, high-performance composite fuel cell plates is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of battery plates, in particular to a device for microwave sintering battery plates. Background Art

[0002] Fuel cells use hydrogen as fuel, and the reaction process does not involve combustion, and the products are water and electricity, so they have no impact on the environment and are extremely important for reducing carbon dioxide emissions. In addition, the application of fuel cells in vehicles such as cars, buses, and trucks is gradually expanding. Compared with traditional internal combustion engines, fuel cell vehicles have the advantages of zero emissions, low noise, and higher energy efficiency, and are an important choice for future clean transportation.

[0003] Battery plates are extremely important components of fuel cells, and their importance is self-evident. Battery plates, also known as current collectors, account for 75% of the weight of the entire battery and 60% of the cost. They are multifunctional core components of fuel cells. They are mainly responsible for carrying membrane electrodes, isolating fuel and oxidants, and conducting current and heat. At the same time, flow channels are designed and processed on the plates to evenly distribute fuel and air to the inside of the battery, and the reaction product water is also discharged through the flow channels. Therefore, the plate material needs to have good conductivity, corrosion resistance, and mechanical properties. As a multifunctional core component of fuel cells, the plate has strict requirements on corrosion resistance, conductivity, and mechanical properties. Materials, preparation processes, and flow field structures are the main factors affecting the performance of the plate.

[0004] At present, the forming methods of fuel cell plates include stamping forming, hydraulic forming, rubber pad forming, etching and the like.

[0005] Stamping produces large noise and vibration, requires high mold precision, is complex to manufacture, has a long cycle, and is expensive to manufacture, so small-batch production is limited.

[0006] The hydraulic forming has low efficiency due to the large resistance and leakage of fluid flow. If not handled properly, the leakage will not only pollute the site, but also may cause fire and explosion accidents. The manufacturing precision of hydraulic components is high and the price is expensive. On the other hand, the leakage and compressibility of the liquid medium cannot obtain a strict transmission ratio. It is not easy to find the cause when the hydraulic transmission fails, and the use and maintenance require a high level of technology.

[0007] The shortcomings of the rubber pad molding process are very obvious. The service life of the rubber pad is short and needs to be replaced frequently.

[0008] Etching molding uses acidic or alkaline chemical solutions, so wastewater will be generated, which requires professional wastewater treatment. In addition, etching is difficult to control the accuracy of the product.

[0009] At present, the commonly used graphite materials, metal materials and composite materials for battery plates have technical bottlenecks in mechanical properties, corrosion resistance and electrical conductivity. The flow field structure is also becoming increasingly complex, and the above commonly used preparation processes are difficult to achieve lightweight composite battery plates.

[0010] Microwave sintering is a method that utilizes the special waveband of microwaves to couple with the dielectric material of the electromagnetic field to heat the material to be processed as a whole to the sintering temperature, thereby achieving sintering and densification.

[0011] The material in microwave sintering absorbs microwaves and converts them into kinetic energy and potential energy of the molecules inside the material, so that the material is heated evenly as a whole. Battery plates manufactured using microwave sintering have better performance and higher manufacturing efficiency. In addition, this method is also environmentally friendly and energy-saving, which can significantly reduce production costs and environmental pollution. Summary of the invention

[0012] The technical problem to be solved by the present invention is to provide a device for microwave sintering battery plates with higher manufacturing efficiency, better product performance and less environmental pollution, which can be used to produce lightweight composite material battery plates.

[0013] In order to solve the above technical problems, the technical solution provided by the present invention is: a device for microwave sintering battery plates, comprising a mobile platform, a powder loading mechanism, a powder scraping plate, a plate placing mechanism and a microwave sintering mechanism;

[0014] A uniform rotating disc is provided on the top of the mobile platform, and a battery plate mold is provided on the uniform rotating disc; driven by the mobile platform, the uniform rotating disc moves from the powder loading mechanism to the bottom of the microwave sintering mechanism after passing through the powder scraping plate and the plate placing mechanism in sequence;

[0015] A mounting frame covering the outside of the mobile platform is provided above the mobile platform, and the powder feeding mechanism is arranged on the top of the mounting frame to receive the powder and evenly sprinkle the powder into the battery plate mold through the powder spreading assembly at the lower end thereof;

[0016] The powder scraper is fixed on the top of the mounting frame and contacts the battery plate mold to scrape off excess powder during the movement of the battery plate mold.

[0017] The plate placing mechanism is arranged on the top of the mounting frame and pushes the plastic plate inside it to fall onto the battery plate mold to cover the material powder;

[0018] The microwave sintering mechanism is arranged on the top of the mounting frame and drives the microwave heating assembly to move downward and press the plastic plate through the microwave heating lifting assembly, and forms the battery plate by sintering the material powder through microwave heating.

[0019] Furthermore, the mobile platform includes a base, a mobile drive motor, a screw, a guide rail, a sleeve, a nut seat and a loading plate, the mobile drive motor is fixed at one end of the base, the screw is connected to the power output shaft of the mobile drive motor, the guide rail is arranged parallel to the screw and is located on both sides of the screw, the sleeve is fixed to the bottom of the loading plate and is sleeved on the guide rail, and the nut seat is threadedly connected to the screw and fixed to the bottom of the loading plate.

[0020] Furthermore, a rotation drive motor is provided at the bottom of the loading plate, and a power output end of the rotation drive motor is connected to the uniformly rotating disc through a transmission gear set.

[0021] Furthermore, a mold support frame is provided on the top of the uniformly rotating disc, and a mold lifting drive motor, a mold driving gear, a mold rack frame and a mold moving rack are provided in the mold support frame. The mold lifting drive motor is fixed on the uniformly rotating disc, the mold driving gear is fixed on the power output shaft of the mold lifting drive motor, the mold rack frame is fixed on the uniformly rotating disc, the mold moving rack is buckled on the mold rack frame and meshes with the mold driving gear, and the top of the mold moving rack is connected to the battery plate mold.

[0022] Furthermore, the uniformly rotating disc is provided with a powder recovery frame which is sleeved on the outside of the mold support frame, and handles are provided on both sides of the powder recovery frame.

[0023] Furthermore, the powder loading mechanism includes a powder loading funnel and a powder sprinkling assembly, the powder sprinkling assembly includes a powder sprinkling drive motor, a drive gear set, a powder sprinkling shaft and a powder sprinkling control panel, the powder sprinkling drive motor is fixed to one side of the lower end of the powder loading funnel through a mounting frame, the power output end of the powder sprinkling drive motor is connected to the drive gear set, the drive gear set is connected to the powder sprinkling shaft, the powder sprinkling shaft is rotatably connected to the lower end of the powder loading funnel, and the powder sprinkling control panel is connected to the powder sprinkling shaft.

[0024] Furthermore, the board placing mechanism includes a suspension frame, a push plate assembly, a board storage box and a board placing box, the suspension frame is fixed on the mounting frame and connected to the push plate assembly, the board storage box and the board placing box, the board storage box has a board inlet at the top, a push plate opening is provided on one side of the bottom of the board storage box, and a board outlet is provided on the other opposite side, the board outlet is connected to the top of the board placing box, the push plate assembly is arranged on the side of the board storage box with the push plate opening and moves back and forth to push the plastic board inside the board storage box through the board outlet into the board placing box, and the board placing box has a board placing opening at the bottom.

[0025] Furthermore, the push plate assembly includes a push plate support frame, a push plate motor, a rocker arm and a push plate, the push plate support frame is connected to the plate storage box, the push plate motor is fixed on the push plate support frame, the power output shaft of the push plate motor is connected to the rocker arm, the end of the rocker arm extends into the limiting slot at the end of the push plate, and the other end of the push plate extends into the push plate opening.

[0026] Furthermore, the microwave sintering mechanism includes a microwave heating lifting assembly and a microwave heating assembly;

[0027] The microwave heating lifting assembly includes a microwave heating lifting drive motor, a fixed rack seat and a microwave heating lifting rack. A cover plate is provided on the top of the mounting frame. The microwave heating lifting drive motor is fixed on the cover plate. A microwave heating lifting drive gear is provided at the power output end of the microwave heating lifting drive motor. The microwave heating lifting rack is slidably connected to the fixed rack seat and its lower end is connected to the microwave heating assembly. The microwave heating lifting drive gear is meshed with the microwave heating lifting rack for transmission.

[0028] Furthermore, the microwave heating assembly includes a microwave fixing frame, a microwave generator, and a microwave sintering heating cover. The microwave fixing frame is connected to the lower end of the microwave heating lifting rack, the microwave generator is fixed in the microwave fixing frame, a rotating bearing is provided below the microwave fixing frame, a heating cover rotating shaft connected to the microwave sintering heating cover is provided in the rotating bearing, and the bottom of the microwave sintering heating cover can be buckled and sealed with the uniform rotating disc.

[0029] The advantages of the present invention compared with the prior art are:

[0030] 1. Improve manufacturing efficiency: Microwaves only heat the battery plate material powder that absorbs microwaves, which is targeted, has low energy consumption and fast heating.

[0031] 2. Improve product performance: Only a small amount of conductive material (carbon microspheres, carbon nanotube mixed materials) is needed to prepare composite battery plates with good conductivity, light weight and corrosion resistance.

[0032] 3. Reduce costs: The battery plates prepared by microwave sintering method only require a small amount of conductive material, which reduces material costs and reduces battery costs. In addition, this device can produce lightweight plates, which can reduce the weight of the battery and further reduce the weight of hydrogen fuel cell vehicles, thereby reducing energy waste in hydrogen fuel cell vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The structure diagram of a device for microwave sintering battery plates of the present invention is shown in FIG. Figure 1 .

[0034] Figure 2 The structure diagram of a device for microwave sintering battery plates of the present invention is shown in FIG. Figure 2 .

[0035] Figure 3 It is a structural diagram of the mobile platform.

[0036] Figure 4This is a schematic diagram of the powder loading mechanism. Figure 1 .

[0037] Figure 5 This is a schematic diagram of the powder loading mechanism. Figure 2 .

[0038] Figure 6 It is a schematic diagram of the structure of a powder scraper.

[0039] Figure 7 This is the structural diagram of the plate placing mechanism. Figure 1 .

[0040] Figure 8 This is the structural diagram of the plate placing mechanism. Figure 2 .

[0041] Fig. 9 It is a structural schematic diagram of the microwave sintering mechanism.

[0042] Fig.10 It is a structural schematic diagram of the mold support frame, the mold lifting structure and the mold.

[0043] Fig.11 It is a structural schematic diagram of a battery plate mold.

[0044] Fig.12 It is a structural schematic diagram of the powder recovery frame.

[0045] Fig.13 This is a simulation diagram of the temperature field of the battery plate under the electric field model.

[0046] As shown in the figure: 1. Mobile platform, 2. Powder loading mechanism, 3. Powder scraper, 4. Plate placing mechanism, 5. Microwave sintering mechanism, 6. Uniformly rotating disc, 7. Battery plate mold, 8. Mounting frame, 9. Base, 10. Mobile drive motor, 11. Screw, 12. Guide rail, 13. Sliding sleeve, 14. Nut seat, 15. Loading plate, 16. Rotating drive motor, 17. Mold support frame, 18. Mold lifting drive motor, 19. Mold drive gear, 20. Mold rack frame, 21. Mold moving rack, 22. Powder recovery frame, 23. Handle, 24. Powder loading funnel, 25. Powder sprinkling drive motor, 26. Drive Gear set, 27, powdering shaft, 28, powdering control board, 29, suspension frame, 30, board storage box, 31, board placement box, 32, board inlet, 33, board pusher, 34, board outlet, 35, board release, 36, board pusher support frame, 37, board pusher motor, 38, rocker arm, 39, push plate, 40, limit slot, 41, microwave heating lifting drive motor, 42, fixed rack seat, 43, microwave heating lifting rack, 44, cover plate, 45, microwave heating lifting drive gear, 46, microwave device fixing frame, 47, microwave generator, 48, microwave sintering heating cover, 49, rotating bearing, 50, heating cover rotating shaft. DETAILED DESCRIPTION

[0047] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “inside”, “outside”, “vertical” and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention 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 invention.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection 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 the present invention can be understood according to specific circumstances.

[0049] The following is a further detailed description of a device for microwave sintering battery plates of the present invention in conjunction with the accompanying drawings.

[0050] Combined with Figure 1-13 , the present invention is introduced in detail.

[0051] A device for microwave sintering battery plates comprises a mobile platform 1, a powder loading mechanism 2, a powder scraping plate 3, a plate placing mechanism 4 and a microwave sintering mechanism 5. A uniformly rotating disc 6 is arranged on the top of the mobile platform 1, and a battery plate mold 7 is arranged on the uniformly rotating disc 6. Fig.11 The battery plate mold 7 is a special mold for manufacturing battery plates, which is usually composed of two upper and lower molds, namely a die-casting mold and a mold seat. Driven by the mobile platform 1, the uniformly rotating disc 6 moves from the powder loading mechanism 2 to the bottom of the microwave sintering mechanism 5 after passing through the powder scraping plate 3 and the plate placing mechanism 4 in sequence. A mounting frame 8 is provided above the mobile platform 1 to cover the outside thereof. The powder loading mechanism 2 is arranged on the top of the mounting frame 8 to receive the material powder and evenly sprinkle the material powder into the battery plate mold 7 through the powder spreading assembly at its lower end. The powder scraping plate 3 is fixed on the top of the mounting frame 8 and contacts the battery plate mold 7 to scrape off the excess material powder during the movement of the battery plate mold 7. The plate placing mechanism 4 is arranged on the top of the mounting frame 8 and pushes the plastic plate inside it to fall onto the battery plate mold 7 to cover the material powder. The microwave sintering mechanism 5 is arranged on the top of the mounting frame 8 and drives the microwave heating assembly to move down and press the plastic plate through the microwave heating lifting assembly, and sinter the material powder through microwave heating to form a battery plate.

[0052] Furthermore, the mobile platform 1 includes a base 9, a mobile drive motor 10, a lead screw 11, a guide rail 12, a sleeve 13, a nut seat 14 and a carrier plate 15. The mobile drive motor 10 is fixed to one end of the base 9, and the lead screw 11 is connected to the power output shaft of the mobile drive motor 10. The guide rail 12 is arranged parallel to the lead screw 11 and is located on both sides of the lead screw 11, the sleeve 13 is fixed to the bottom of the carrier plate 15 and sleeved on the guide rail 12, and the nut seat 14 is threadedly connected to the lead screw 11 and fixed to the bottom of the carrier plate 15. Such a design enables the carrier plate 15 to move smoothly along the lead screw 11, thereby realizing the automatic transmission of the battery plate mold 7.

[0053] A rotary drive motor 16 is provided at the bottom of the carrier plate 15, and the power output end of the rotary drive motor 16 is connected to the uniform rotating disc 6 through a transmission gear set. This enables the uniform rotating disc 6 to rotate smoothly, ensuring that the powder is evenly distributed in the battery plate mold 7.

[0054] A mold support frame 17 is provided on the top of the uniformly rotating disc 6, and a mold lifting drive motor 18, a mold driving gear 19, a mold rack frame 20 and a mold moving rack 21 are provided in the mold support frame 17. The mold lifting drive motor 18 is fixed on the uniformly rotating disc 6, the mold driving gear 19 is fixed on the power output shaft of the mold lifting drive motor 18, the mold rack frame 20 is fixed on the uniformly rotating disc 6, and the mold moving rack 21 is buckled on the mold rack frame 20 and meshed with the mold driving gear 19. The top of the mold moving rack 21 is connected to the battery plate mold 7. Such a design enables the battery plate mold 7 to be lifted and moved, which is convenient for powdering, scraping powder and placing the plate, as well as the subsequent pressurization of the material powder in cooperation with the microwave sintering mechanism 5, and the thickness of the battery plate can be controlled at the same time.

[0055] The powder loading mechanism 2 includes a powder loading funnel 24 and a powder sprinkling assembly. The powder sprinkling assembly includes a powder sprinkling drive motor 25, a drive gear set 26, a powder sprinkling shaft 27 and a powder sprinkling control panel 28. The powder sprinkling drive motor 25 is fixed to one side of the lower end of the powder loading funnel 24 through a mounting frame 8, and the power output end of the powder sprinkling drive motor 25 is connected to the drive gear set 26, and the drive gear set 26 is connected to the powder sprinkling shaft 27. The powder sprinkling shaft 27 is rotatably connected to the lower end of the powder loading funnel 24, and the powder sprinkling control panel 28 is connected to the powder sprinkling shaft 27. The opening size is determined by controlling the rotation angle of the powder sprinkling control panel 28. Such a design enables the powder sprinkling assembly to evenly sprinkle the material powder into the battery plate mold 7.

[0056] The process of powdering is as follows:

[0057] ① Add enough powder to the powder loading hopper 24;

[0058] ② The powder-sprinkling control plate 28 is controlled by the powder-sprinkling driving motor 25 to rotate and let the powder fall;

[0059] ③ After the powder spreading control panel 28 is opened, the powder falls onto the battery plate mold 7;

[0060] ④ After the powdering is completed, the powdering drive motor 25 is started again to close the powdering control panel 28;

[0061] ⑤ If the powder on the surface of the battery plate mold 7 does not reach the amount required for processing, repeat steps ② to ④ again.

[0062] After the powdering is completed, the excess powder on the surface of the battery plate mold 7 needs to be scraped off by the powder scraper 3.

[0063] Scraping powder working process:

[0064] ① The powder scraper 3 is fixed on the mounting frame 8 and does not move;

[0065] ② The battery plate mold 7 moves relative to the powder scraping plate 3 under the drive of the mobile platform 1 to scrape powder;

[0066] ③ If the powder on the surface of the battery plate mold 7 is not scraped off, repeat step ②.

[0067] The uniformly rotating disc 6 is provided with a powder recovery frame 22 which is sleeved on the outside of the mold support frame 17, and handles 23 are provided on both sides of the powder recovery frame 22. The powder recovery frame 22 is used to collect the powder dropped during the powder scraping process to reduce material waste. After the powder is scraped off, the powder falls directly into the powder recovery frame 22 to complete the powder recovery. In addition, handles 23 are added and designed at both ends of the powder recovery frame 22 to facilitate manual hand-held powder recovery before and after the device is started.

[0068] The plate placing mechanism 4 includes a suspension frame 29, a push plate assembly, a plate storage box 30 and a plate placing box 31. The suspension frame 29 is fixed on the mounting frame 8 and connected to the push plate assembly, the plate storage box 30 and the plate placing box 31. A plate inlet 32 ​​is provided at the top of the plate storage box 30, a push plate opening 33 is provided on one side of the bottom of the plate storage box 30, and a plate outlet 34 is provided on the other opposite side. The plate outlet 34 is connected to the top of the plate placing box 31, and the push plate assembly is arranged on one side of the plate storage box 30 having the push plate opening 33 and moves forward and backward to push the plastic plate inside the plate storage box 30 into the plate placing box 31 through the plate outlet 34. A plate placing opening 35 is provided at the bottom of the plate placing box 31. Such a design enables the plastic plate to automatically fall onto the battery plate mold 7, cover the material powder, and thus facilitate the subsequent pressing of the battery plate molding.

[0069] The push plate assembly includes a push plate support frame 36, a push plate motor 37, a rocker arm 38 and a push plate 39. The push plate support frame 36 is connected to the plate storage box 30, and the push plate motor 37 is fixed on the push plate support frame 36. The power output shaft of the push plate motor 37 is connected to the rocker arm 38, and the end of the rocker arm 38 extends into the limit slot 40 at the end of the push plate 39. The other end of the push plate 39 extends into the push plate opening 33. The push plate assembly can smoothly push the plastic plate so that it naturally falls onto the battery plate mold 7.

[0070] The plate placing mechanism 4 drives the rocker arm 38 to rotate by the plate pushing motor 37, thereby driving the push plate 39 to move inward or outward. The inward movement is to push the plastic plate to the plate placing box 31, and the outward movement is to return the push plate 39 to the original position to wait for the next plastic plate to be pushed. The upper end of the plate placing mechanism 4 is fixed to the mounting frame 8 through the suspension frame 29, and the height between the plate placing opening 35 at the lower end of the plate placing box 31 and the surface powder on the battery plate is determined to be 10 mm.

[0071] Automatic board placement workflow:

[0072] ① Put 10 plastic boards into the board inlet 32 ​​at the top of the board storage box 30;

[0073] ② The push plate motor 37 drives the rocker arm 38 to rotate;

[0074] ③ The rocker arm 38 drives the push plate 39 to push the bottom plastic plate toward the plate box 31;

[0075] ④ After the plastic board falls from the board opening 35 at the lower end of the board box 31 to the specified position, the push board motor 37 drives the push board 39 to return to its original position through the rocker arm 38. Under the action of gravity, the second plastic board becomes the lowest one, waiting for the next push.

[0076] The microwave sintering mechanism 5 includes a microwave heating lifting assembly and a microwave heating assembly. The microwave heating lifting assembly includes a microwave heating lifting drive motor 41, a fixed rack seat 42 and a microwave heating lifting rack 43. A cover plate 44 is provided on the top of the mounting frame 8, and the microwave heating lifting drive motor 41 is fixed on the cover plate 44. A microwave heating lifting drive gear 45 is provided at the power output end of the microwave heating lifting drive motor 41, and the microwave heating lifting rack 43 is slidably connected to the fixed rack seat 42 and its lower end is connected to the microwave heating assembly. The microwave heating lifting drive gear 45 is meshed with the microwave heating lifting rack 43 for transmission. The microwave heating assembly is driven to descend by the microwave heating lifting assembly to compress the plastic plate and pressurize the battery plate material powder, thereby realizing microwave sintering of the microwave heating assembly to form a battery plate.

[0077] The microwave heating assembly includes a microwave fixing frame 46, a microwave generator 47, and a microwave sintering heating cover 48. The microwave fixing frame 46 is connected to the lower end of the microwave heating lifting rack 43, and the microwave generator 47 is fixed in the microwave fixing frame 46. A rotating bearing 49 is provided below the microwave fixing frame 46, and a heating cover rotating shaft 50 connected to the microwave sintering heating cover 48 is provided in the rotating bearing 49. A heating cover tray is provided outside the battery plate mold 7. During the microwave heating and sintering process, the bottom of the microwave sintering heating cover 48 and the heating cover tray can be buckled and sealed. A sealing structure is formed between the microwave sintering heating cover 48 and the battery plate mold 7 to ensure the microwave sintering effect.

[0078] Two threaded holes are designed at the top of the microwave fixture 46, which are used to fix the lower end of the microwave heating lifting rack 43 above by screws. The microwave generator 47 passes microwaves through the microwave sintering heating cover 48 through the hole below to heat the powder to be formed. Below the microwave fixture 46 is a support for fixing the bearing, and the two parts are fixed to the outer ring of the rotating bearing 49 by bolts and nuts. Finally, the bottom microwave sintering heating cover 48 is fixedly connected to the inner hole of the rotating bearing 49, so that after the microwave sintering heating cover 48 is lowered, it rotates and heats together with the battery plate mold 7 along with the uniform rotating disk 6, realizing the function of uniform heating.

[0079] The specific implementation process of the device for microwave sintering battery plates of the present invention is as follows:

[0080] When sintering the battery plate, firstly, the mobile driving motor 10 is started to drive the mold on the carrier plate 15 to move to the bottom of the powder loading mechanism 2 through the transmission structure of the lead screw 11;

[0081] After reaching the bottom of the powder loading mechanism 2, the mold lifting drive motor 18 is started according to the target battery plate thickness to make the lower mold of the battery plate mold 7 rise or fall to adjust the height between it and the upper mold, thereby controlling the thickness of the battery plate;

[0082] After adjusting the depth of the mold, heat the powder in the powder loading funnel 24; start the powder spreading drive motor 25 to drive the powder spreading shaft 27 to rotate so that the powder spreading control plate 28 opens, and the powder is naturally sprinkled into the battery plate mold 7. The overall movement of the mold is controlled by the mobile drive motor 10, so that the mold moves relative to the powder loading mechanism 2, thereby making the powder spreading more uniform.

[0083] After the powdering is finished, the mobile driving motor 10 controls the loading plate 15 to drive the mold to continue to move through the powder scraping plate 3. The powder scraping plate 3 contacts the battery plate mold 7 to remove excess powder. The scraped powder falls into the powder recovery frame for convenient reuse.

[0084] After the powder scraping is completed, the mobile driving motor 10 controls the loading plate 15 to drive the mold to continue to move to the bottom of the plate placing mechanism 4; a number of stacked plastic plates are placed in the plate storage box 30, and the pushing plate motor 37 is started to drive the pushing plate 39 to push the plastic plate at the bottom of the plate storage box 30 into the plate placing box 31, and the plastic plate naturally falls onto the battery plate mold 7 through the plate placing opening 35 at the bottom of the plate placing box 31; the pushing plate motor 37 is reversed to retract the pushing plate 39, and the stacked plastic plates automatically fall down and wait for the next process.

[0085] After the plate is placed, the mobile driving motor 10 controls the loading plate 15 to drive the mold to continue to move to the bottom of the microwave sintering mechanism 5; the microwave heating lifting driving motor 41 is started to drive the microwave heating lifting rack 43 to move downward, thereby pushing the microwave generator 47 to move downward, so that the microwave sintering heating cover 48 moves downward to buckle and seal with the heating cover tray on the battery plate mold 7 and pressurize the plastic plate and the powder; the rotating driving motor 16 is started to rotate the battery plate mold 7, and the microwave generator 47 is started to heat the pressurized powder at high temperature to form it. During the heating process, the battery plate mold 7 rotates continuously to make the heating more uniform;

[0086] The material powder used in the manufacture of battery plates only requires a small amount of conductive material (carbon microspheres, carbon nanotube mixed materials) to prepare composite battery plates with good conductivity, light weight and corrosion resistance.

[0087] The device of the present invention is specifically used for making composite material battery plates, which are composite material conductive plates mentioned and developed in the paper "Research on Forming Process of Laser Additive Manufacturing Polymer-based Composite Conductive Plates".

[0088] The battery plate related parameters are shown in Table 1.

[0089]

[0090] Microwave heating is the last step in the production of battery plates. The relevant data of the battery plates can be obtained by simulating the temperature field of the battery plates to be formed by microwave heating.

[0091] The specific operation method is as follows:

[0092] The powder used to make the battery plates is a material mixed with graphite and polypropylene in a ratio of 1:1. The shell of the microwave sintering cover is made of copper. The microwave heating molding temperature is set to 200°C and the heating time is 40s.

[0093] Comsol simulation software is used to simulate the temperature field of the formed battery plate. The simulation results are as follows: Fig.13 As shown in the figure, this figure shows the temperature field of the battery plate under the electric field model.

[0094] The temperature distribution diagram is used in the design and optimization of microwave heating equipment to maximize the heating efficiency and uniformity. The heating effect can be optimized by adjusting parameters such as microwave power and frequency.

[0095] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A device for microwave sintering battery plates, characterized in that: It comprises a moving platform (1), a powder loading mechanism (2), a powder scraping plate (3), a plate placing mechanism (4) and a microwave sintering mechanism (5); A uniformly rotating disc (6) is provided on the top of the mobile platform (1), and a battery plate mold (7) is provided on the uniformly rotating disc (6); driven by the mobile platform (1), the uniformly rotating disc (6) moves from the powder loading mechanism (2) to the bottom of the microwave sintering mechanism (5) after passing through the powder scraping plate (3) and the plate placing mechanism (4) in sequence; A mounting frame (8) covering the outside of the mobile platform (1) is provided above the mobile platform (1); the powder loading mechanism (2) is arranged on the top of the mounting frame (8) to receive the powder and evenly sprinkle the powder into the battery plate mold (7) through a powder spreading assembly at its lower end; The powder scraper plate (3) is fixed on the top of the mounting frame (8) and is in contact with the battery plate mold (7) to scrape off excess powder during the movement of the battery plate mold (7); The plate placing mechanism (4) is arranged on the top of the mounting frame (8) and pushes the plastic plate inside the mounting frame to fall onto the battery plate mold (7) to cover the material powder; The microwave sintering mechanism (5) is arranged on the top of the mounting frame (8) and drives the microwave heating assembly to move downward and press the plastic plate through the microwave heating lifting assembly, and forms a battery plate by sintering the material powder through microwave heating.

2. The device for microwave sintering battery plates according to claim 1, characterized in that: The mobile platform (1) comprises a base (9), a mobile drive motor (10), a lead screw (11), a guide rail (12), a sleeve (13), a nut seat (14) and a loading plate (15); the mobile drive motor (10) is fixed to one end of the base (9); the lead screw (11) is connected to a power output shaft of the mobile drive motor (10); the guide rail (12) is arranged parallel to the lead screw (11) and is located on both sides of the lead screw (11); the sleeve (13) is fixed to the bottom of the loading plate (15) and sleeved on the guide rail (12); and the nut seat (14) is threadedly connected to the lead screw (11) and fixed to the bottom of the loading plate (15).

3. The device for microwave sintering battery plates according to claim 2, characterized in that: A rotary drive motor (16) is provided at the bottom of the object carrier plate (15), and a power output end of the rotary drive motor (16) is connected to the uniformly rotating disc (6) via a transmission gear set.

4. The device for microwave sintering battery plates according to claim 3, characterized in that: A mold support frame (17) is provided on the top of the uniformly rotating disk (6). A mold lifting drive motor (18), a mold driving gear (19), a mold rack frame (20) and a mold moving rack (21) are provided in the mold support frame (17). The mold lifting drive motor (18) is fixed on the uniformly rotating disk (6). The mold driving gear (19) is fixed on the power output shaft of the mold lifting drive motor (18). The mold rack frame (20) is fixed on the uniformly rotating disk (6). The mold moving rack (21) is buckled on the mold rack frame (20) and meshes with the mold driving gear (19). The top of the mold moving rack (21) is connected to the battery plate mold (7).

5. The device for microwave sintering battery plates according to claim 4, characterized in that: The uniformly rotating disc (6) is provided with a powder recovery frame (22) sleeved on the outside of the mold support frame (17), and handles (23) are provided on both sides of the powder recovery frame (22).

6. The device for microwave sintering battery plates according to claim 5, characterized in that: The powder loading mechanism (2) comprises a powder loading funnel (24) and a powder sprinkling assembly, wherein the powder sprinkling assembly comprises a powder sprinkling drive motor (25), a drive gear set (26), a powder sprinkling rotating shaft (27) and a powder sprinkling control panel (28), wherein the powder sprinkling drive motor (25) is fixed to one side of the lower end of the powder loading funnel (24) via a mounting frame (8), a power output end of the powder sprinkling drive motor (25) is connected to the drive gear set (26), the drive gear set (26) is connected to the powder sprinkling rotating shaft (27), the powder sprinkling rotating shaft (27) is rotatably connected to the lower end of the powder loading funnel (24), and the powder sprinkling control panel (28) is connected to the powder sprinkling rotating shaft (27).

7. The device for microwave sintering battery plates according to claim 6, characterized in that: The board placing mechanism (4) comprises a suspension frame (29), a push plate assembly, a board storage box (30) and a board placing box (31); the suspension frame (29) is fixed on the mounting frame (8) and connected to the push plate assembly, the board storage box (30) and the board placing box (31); a board inlet (32) is provided at the top of the board storage box (30); a push plate opening (33) is provided at one side of the bottom of the board storage box (30) and a board outlet (34) is provided at the other side opposite thereto; the board outlet (34) is connected to the top of the board placing box (31); the push plate assembly is arranged at one side of the board storage box (30) having the push plate opening (33) and moves forward and backward to push the plastic board inside the board storage box (30) into the board placing box (31) through the board outlet (34); and a board placing opening (35) is provided at the bottom of the board placing box (31).

8. The device for microwave sintering battery plates according to claim 7, characterized in that: The push plate assembly comprises a push plate support frame (36), a push plate motor (37), a rocker arm (38) and a push plate (39); the push plate support frame (36) is connected to the plate storage box (30); the push plate motor (37) is fixed on the push plate support frame (36); the power output shaft of the push plate motor (37) is connected to the rocker arm (38); the end of the rocker arm (38) extends into a limiting slot (40) at the end of the push plate (39); and the other end of the push plate (39) extends into a push plate opening (33).

9. The device for microwave sintering battery plates according to claim 8, characterized in that: The microwave sintering mechanism (5) comprises a microwave heating lifting component and a microwave heating component; The microwave heating lifting assembly comprises a microwave heating lifting drive motor (41), a fixed rack seat (42) and a microwave heating lifting rack (43); a cover plate (44) is provided on the top of the mounting frame (8); the microwave heating lifting drive motor (41) is fixed on the cover plate (44); a microwave heating lifting drive gear (45) is provided at the power output end of the microwave heating lifting drive motor (41); the microwave heating lifting rack (43) is slidably connected to the fixed rack seat (42) and its lower end is connected to the microwave heating assembly; the microwave heating lifting drive gear (45) is meshed with the microwave heating lifting rack (43) for transmission.

10. The device for microwave sintering battery plates according to claim 9, characterized in that: The microwave heating assembly comprises a microwave fixing frame (46), a microwave generator (47), and a microwave sintering heating hood (48); the microwave fixing frame (46) is connected to the lower end of a microwave heating lifting rack (43); the microwave generator (47) is fixed in the microwave fixing frame (46); a rotating bearing (49) is provided below the microwave fixing frame (46); a heating hood rotating shaft (50) connected to the microwave sintering heating hood (48) is provided in the rotating bearing (49).

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