New energy battery aerogel die cutting production line and die cutting process

Abstract

The invention relates to the technical field of aerogel die-cutting production, in particular to a new energy battery aerogel die-cutting production line and a die-cutting technology.The new energy battery aerogel die-cutting production line comprises aerogel preforming equipment, composite packaging equipment, laser die-cutting machining equipment and quality detection equipment, and a protection box is installed at the upper end of the laser die-cutting machining equipment; a pushing mechanism is mounted on one side of the top in the protection box; the invention discloses a die cutting process of a new energy battery aerogel die cutting production line. The die cutting process comprises the following steps: S1, integrating aerogel preforming by using aerogel preforming equipment; and S2, compounding the aerogel and the base material by using composite packaging equipment through a vacuum hot pressing technology, and packaging through a PET / PI film to form the flexible heat insulation pad. The problem of cutting deviation caused by brittleness during aerogel processing can be solved, aerogel products with different thicknesses can be compatible, the problem of powder falling is solved, the processing precision is improved, waste recycling can be achieved, the processing cost is greatly reduced, meanwhile, the dust collection strength can be automatically adjusted, unmanned safe operation and maintenance are achieved, and the production efficiency is improved. The processing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aerogel die-cutting production, and in particular to a new energy battery aerogel die-cutting production line and a die-cutting process. Background Art

[0002] Aerogel is a solid material composed of a nanoscale porous network structure. Due to its extremely low density (as low as 0.16 mg / cm³) and translucent appearance, it is called "solid smoke" or "frozen smoke". It was once selected as the "lightest solid" by the Guinness World Record 156. Its main components include silicon dioxide, carbon, metal oxides, etc., with ultra-high porosity (up to 99.8%) and unique physical and chemical properties.

[0003] It is one of the lightest known solid materials, with a porosity of over 96% and a thermal conductivity as low as 0.014 W / m·K. Its nanoporous structure requires special processes (such as supercritical drying or drying at room temperature and pressure) to prepare. Its application in new energy batteries is mainly used for battery insulation, flame retardancy, and buffering. It is prone to fragmentation and powdering during the die-cutting process. Existing die-cutting devices cannot recycle its waste during processing, which greatly wastes raw materials. At the same time, in addition to being easy to fragment during cutting, it is also prone to cutting deviation due to brittleness, reducing cutting accuracy. To this end, we proposed a new energy battery aerogel die-cutting production line and die-cutting process to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing technology and propose a new energy battery aerogel die-cutting production line and die-cutting process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A new energy battery aerogel die-cutting production line includes aerogel preforming equipment, composite packaging equipment, laser die-cutting processing equipment and quality inspection equipment. A protection box is installed on the upper end of the laser die-cutting processing equipment, and a pushing mechanism is installed on one side of the top of the protection box. The lower end of the pushing mechanism is connected to a lifting mechanism, and the lower end of the lifting mechanism is connected to an absorption structure. A negative pressure recovery device is provided on one side of the laser die-cutting processing equipment, and an absorption pipeline is connected to the negative pressure recovery device. The absorption pipeline is connected to the absorption mechanism, and one side of the laser die-cutting processing equipment is connected to the waste heat recovery equipment through a waste heat recovery pipeline.

[0006] Preferably, the pushing mechanism includes two hydraulic cylinders fixed to one side of the upper end of the protective box, a connecting piece is fixed to the end of the piston rod of the hydraulic cylinder, a slider is fixed to the lower end of the connecting piece, a rack is installed on one side of the slider, a guide rail is fixed to one side of the protective box, and the slider is installed on the guide rail.

[0007] Preferably, the lifting mechanism includes four mounting seats fixed on one side of the protective box, a threaded sleeve is rotatably sleeved on the mounting seat, a stud is threadedly sleeved on the lower end of the threaded sleeve, a rotating rod is fixed to the upper end of the threaded sleeve, a gear is fixed to the upper end of the rotating rod, and the gear and rack are engaged with each other.

[0008] Preferably, the absorption structure includes a connecting plate fixed at the lower end of the stud, three movable plates are fixed on the two connecting plates, the lower end of the movable plate passes through the side wall of the protective box and extends into the laser die-cutting processing equipment, a fixed tube is fixed on one side of the movable plate, and three absorption covers are connected to one side of the fixed tube at equal intervals.

[0009] Preferably, the negative pressure recovery device includes a receiving box arranged on one side of the composite packaging equipment, a collecting box is provided in the receiving box, and one end of the collecting box is connected to a negative pressure suction fan through a connecting pipeline.

[0010] Preferably, the absorption pipeline includes a connecting box connected to one side of the negative pressure suction fan, both ends of the connecting box are connected to the first absorption pipeline, one end of the two first absorption pipelines is respectively connected to a connecting head, one end of the connecting head is connected to three second absorption pipelines, and one end of the three second absorption pipelines on the same side is respectively connected to a hose, and one end of the hose is connected to one side of the fixed pipe.

[0011] Preferably, the waste heat recovery pipeline includes two recovery pipes connected to one end of the waste heat recovery equipment, and the two recovery pipes are respectively fixed on both sides of the laser die-cutting processing equipment. A plurality of recovery joints are evenly spaced and connected to one side of the recovery pipe. The recovery joints pass through the side wall of the laser die-cutting processing equipment and extend into the laser die-cutting processing equipment.

[0012] A die-cutting process for a new energy battery aerogel die-cutting production line includes the following steps: S1. Integrate aerogel preforming using aerogel preforming equipment; S2. Using composite packaging equipment and vacuum hot pressing technology to composite the aerogel with the substrate, and encapsulating it with a PET / PI film to form a flexible thermal insulation pad; S3. Utilize laser die-cutting processing equipment combined with a servo motor-driven CNC die-cutting machine. During the laser die-cutting process, the AI ​​visual positioning system uses a high-precision CCD camera to calibrate the material position in real time, die-cut the aerogel, and perform negative pressure adsorption during die-cutting. The negative pressure recovery device monitors the dust concentration and negative pressure value in real time through the PLC system, automatically adjusts the dust collection intensity, and is compatible with grating sensors and alarm devices to achieve waste recycling. At the same time, the high temperature generated is recovered through waste heat recovery equipment; S4. Use quality inspection equipment to conduct automated inspections. Combine infrared thermal imaging, laser thickness measurement, and X-rays to achieve full online inspections, and feed the data back to the MES system.

[0013] S5. Achieve seamless bonding of aerogel and other materials through automated slit coating technology.

[0014] Preferably, according to step S2, the aerogel is compounded with ceramic fibers, mica sheets, and PI films, and the lamination of the aerogel and the reinforcing materials is simultaneously completed by hot pressing rollers to improve the mechanical strength of the thermal insulation pad.

[0015] Preferably, according to step S3, the laser die-cutting processing equipment is compatible with aerogel products with a thickness of 0.5-3 mm.

[0016] In the present invention, the four steps of aerogel preforming, composite packaging, laser die-cutting and quality inspection are integrated. The AI ​​visual positioning system is introduced through laser die-cutting, and the material position is calibrated in real time by a high-precision CCD camera to solve the cutting offset problem caused by the brittleness of aerogel. The online composite technology of aerogel and ceramic fiber, mica sheet and PI film is adopted, and the lamination of aerogel and reinforcing material is completed synchronously by hot pressing rollers to improve the mechanical strength of the thermal insulation pad (compressive strength is increased by more than 30%). Infrared thermal imaging (to detect thermal conductivity uniformity), laser thickness measurement (accuracy of ±2μm) and X-ray (to detect internal microcracks) are combined to realize online full inspection, and the data is fed back to the MES system to automatically optimize the process parameters.

[0017] In the present invention, bio-based polylactic acid (PLA) is used to replace traditional PET film, and the low-temperature curing of the degradable coating is completed simultaneously during the die-cutting process, achieving a 30% carbon reduction over the entire life cycle. Heat pump technology is used to recycle the waste heat generated by the die-cutting process to provide preheating energy for the composite station, reducing the overall energy consumption by 40%. At the same time, UV curing adhesives are used to achieve zero VOCs emissions during the composite process of aerogel and flame retardant coating.

[0018] In the present invention, the waste heat recovery equipment adopts a two-stage compression heat pump system: the first stage recovers 40-60℃ waste heat, and the second stage increases it to above 80℃ for production reuse. Based on the ICAPS platform, the waste heat temperature and flow parameters are monitored in real time, and the compressor frequency and heat medium circulation speed are dynamically adjusted to stabilize the COP value at above 4.0. It only takes 0.25kWh of electricity to recover 1 ton of 80℃ waste heat, which saves 75% energy compared with electric heating. A screw water source heat pump is used to recover the waste heat of the die-cutting machine cooling water for preheating the sol-gel reactor, reducing the overall energy consumption by 22%.

[0019] The present invention has the following advantages: 1. The AI ​​visual positioning system during laser die-cutting uses a high-precision CCD camera to calibrate the material position in real time, solving the cutting offset problem caused by the brittleness of aerogels. 2. The laser die-cutting equipment can be used to process aerogel products of different thicknesses, solving the problem of powder loss and improving processing accuracy. 3. Collect die-cutting waste through negative pressure adsorption, achieving a waste recycling rate of ≥85%, greatly reducing processing costs; 4. The PLC system monitors dust concentration and negative pressure in real time, automatically adjusts the dust suction intensity, and is compatible with grating sensors and alarm devices to achieve unmanned and safe operation and maintenance. 5. The high temperature generated is recovered through waste heat recovery equipment. By applying heat pump technology to recover waste heat, energy utilization efficiency can be significantly improved and production costs can be reduced; 6. The mechanical strength of the thermal insulation pad is improved by adopting the online composite technology of aerogel, ceramic fiber, mica sheet and PI film; In summary, the present invention can not only solve the problem of cutting offset caused by brittleness during aerogel processing, but also is compatible with aerogel products of different thicknesses, solves the powder loss problem and improves processing accuracy. In addition, it can realize the recycling of waste materials, greatly reducing processing costs. At the same time, it can automatically adjust the dust suction intensity, realize unmanned safe operation and maintenance, and improve processing efficiency. In addition, by applying heat pump technology to recover waste heat, it can significantly improve energy utilization efficiency and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the connection between the laser die-cutting equipment and the negative pressure recovery device of the present invention; Figure 2 This is a diagram showing the internal structure of the protection box of the present invention; Figure 3 This is a diagram showing the internal structure of the storage box of the present invention; Figure 4 is a process flow chart of the present invention; Figure 5 for Figure 2 A magnified view of the structure at point A; Figure 6 The structure diagram of the absorption cover of the present invention is provided; Figure 7 This is a structural diagram of the slider installation of the present invention; Figure 8 This is a structural diagram of the recovery joint and the recovery pipe connection of the present invention.

[0021] In the figure: 1 protection box, 2 connection box, 3 storage box, 4 connection pipeline, 5 negative pressure suction fan, 6 first absorption pipeline, 7 second absorption pipeline, 8 solenoid valve, 9 composite packaging equipment, 10 laser die-cutting processing equipment, 11 aerogel preforming equipment, 12 quality inspection equipment, 13 fixed pipe, 14 hydraulic cylinder, 15 rotating rod, 16 gear, 17 rack, 18 guide rail, 19 threaded sleeve, 20 stud, 21 connecting plate, 22 hose, 23 movable plate, 24 connecting piece, 25 collection box, 26 absorption cover, 27 waste heat recovery equipment, 28 recovery pipe, 29 slider, 30 recovery joint. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-8 A new energy battery aerogel die-cutting production line includes an aerogel preforming device 11, a composite packaging device 9, a laser die-cutting processing device 10 and a quality inspection device 12. A protective box 1 is installed on the upper end of the laser die-cutting processing device 10, and a pushing mechanism is installed on the top side of the protective box 1. The pushing mechanism includes two hydraulic cylinders 14 fixed to one side of the upper end of the protective box 1. The end of the piston rod of the hydraulic cylinder 14 is fixed with a connecting piece 24, and the lower end of the connecting piece 24 is fixed with a slider. A rack 17 is installed on one side of the slider. A guide rail 18 is fixed on one side of the protective box 1. The slider is installed on the guide rail 18. The two hydraulic cylinders 14 are controlled by a synchronous control system to achieve synchronous movement. The lower end of the pushing mechanism is connected to a lifting mechanism, which includes four mounting seats fixed to one side of the protective box 1. A threaded sleeve 19 is rotatably sleeved on the mounting seat. A stud 20 is threadedly sleeved on the lower end of the threaded sleeve 19. A rotating rod 15 is fixed to the upper end of the threaded sleeve 19. A gear 16 is fixed to the upper end of the rotating rod 15. The gear 16 and the rack 17 are engaged with each other. The rotation of the gear 16 drives the threaded sleeve 19 to rotate, thereby realizing the rotation of the stud 20, and then realizing the lifting and lowering of the absorption structure at the lower end; The lower end of the lifting mechanism is connected to an absorption structure, which includes a connecting plate 21 fixed to the lower end of the stud 20. Three movable plates 23 are fixed on the two connecting plates 21. The lower end of the movable plate 23 passes through the side wall of the protection box 1 and extends into the laser die-cutting processing equipment 10. A fixed tube 13 is fixed to one side of the movable plate 23. Three absorption covers 26 are evenly spaced and connected to one side of the fixed tube 13. Full absorption can be achieved through the absorption cover 26. A negative pressure recovery device is provided on one side of the laser die-cutting processing equipment 10. The negative pressure recovery device includes a storage box 3 provided on one side of the composite packaging equipment 9. A collection box 25 is provided in the storage box 3. One end of the collection box 25 is connected to a negative pressure suction fan 5 through a connecting pipe 4. The negative pressure suction fan 5 monitors the dust concentration and negative pressure value in real time through the PLC system, automatically adjusts the dust suction intensity, and is compatible with grating sensors and alarm devices to achieve unmanned safe operation and maintenance. The negative pressure recovery device is connected to an absorption pipeline, which is connected to the absorption mechanism. The absorption pipeline includes a connection box 2 connected to one side of the negative pressure suction fan 5. Both ends of the connection box 2 are connected to the first absorption pipeline 6. One end of the two first absorption pipelines 6 is respectively connected to a connector, and one end of the connector is connected to three second absorption pipelines 7. One end of the three second absorption pipelines 7 on the same side is respectively connected to a hose 22. One end of the hose 22 is connected to one side of the fixed pipe 13. Full and comprehensive absorption is achieved through the connection on both sides. One side of the laser die-cutting processing equipment 10 is connected to a waste heat recovery device 27 through a waste heat recovery pipeline. The waste heat recovery pipeline includes two recovery pipes 28 connected to one end of the waste heat recovery device 27. The two recovery pipes 28 are respectively fixed on both sides of the laser die-cutting processing equipment 10. A plurality of recovery joints 30 are evenly spaced and connected to one side of the recovery pipe 28. The recovery joints 30 pass through the side wall of the laser die-cutting processing equipment 10 and extend into the laser die-cutting processing equipment 10. During the aerogel die-cutting process, the waste heat generated by the operation of the equipment is mainly concentrated in the range of 40-80°C, such as waste heat of cooling water, heat dissipation on the surface of the equipment, etc., which are medium and low temperature waste heat 25. Traditional recovery of this type of waste heat is difficult, but heat pump technology can increase low-grade heat energy to above 60°C through the reverse Carnot cycle to meet the reheating needs of the production process. The waste water heat is absorbed by the evaporator and the temperature is increased by the compressor for preheating the mold or workshop heating. Waste heat recovery equipment 27 uses a two-stage compression heat pump system: the first stage recovers waste heat at 40-60°C, and the second stage raises it to above 80°C for reuse in production. Based on the ICAPS platform, waste heat temperature and flow parameters are monitored in real time, and the compressor frequency and heat medium circulation speed are dynamically adjusted to maintain a stable COP value above 4.0. Recovering one ton of 80°C waste heat requires only 0.25kWh of electricity, saving 75% compared to electric heating. A screw-type water-source heat pump is used to recover waste heat from the die-cutting machine cooling water for preheating the sol-gel reactor, reducing overall energy consumption by 22%. A die-cutting process for a new energy battery aerogel die-cutting production line includes the following steps: S1, integrating aerogel preforming using aerogel preforming equipment 11; S2. Using composite packaging equipment 9, vacuum hot pressing technology is used to composite the aerogel with the substrate, and the aerogel is encapsulated with PET / PI film to form a flexible thermal insulation pad. The aerogel is composited with ceramic fiber, mica sheet, and PI film, and the aerogel and reinforcement material are laminated by hot pressing rollers to improve the mechanical strength of the thermal insulation pad. S3. Use laser die-cutting equipment 10 in combination with a servo motor-driven CNC die-cutting machine to die-cut aerogels. During die-cutting, negative pressure adsorption is performed to achieve waste material recovery. The laser die-cutting equipment 10 is compatible with aerogel products with a thickness of 0.5-3 mm. During laser die-cutting, the AI ​​visual positioning system calibrates the material position in real time through a high-precision CCD camera. The negative pressure recovery device monitors the dust concentration and negative pressure value in real time through the PLC system, automatically adjusts the dust suction intensity, and is compatible with grating sensors and alarm devices. S4. Use quality inspection equipment 12 to perform automated inspection, combine infrared thermal imaging, laser thickness measurement, and X-ray to achieve online full inspection, and feed the data back to the MES system; S5. Achieve seamless bonding of aerogel and other materials through automated slit coating technology.

[0024] In the present invention, the four steps of aerogel preforming, composite packaging, laser die-cutting and quality inspection are integrated. The AI ​​visual positioning system is introduced through laser die-cutting, and the material position is calibrated in real time by a high-precision CCD camera to solve the cutting offset problem caused by the brittleness of aerogel. The online composite technology of aerogel and ceramic fiber, mica sheet and PI film is adopted, and the lamination of aerogel and reinforcing material is completed synchronously by hot pressing rollers to improve the mechanical strength of the thermal insulation pad (compressive strength is increased by more than 30%). Infrared thermal imaging (to detect thermal conductivity uniformity), laser thickness measurement (accuracy of ±2μm) and X-ray (to detect internal microcracks) are combined to realize online full inspection, and the data is fed back to the MES system to automatically optimize the process parameters.

[0025] In the present invention, bio-based polylactic acid (PLA) is used to replace traditional PET film, and the low-temperature curing of the degradable coating is completed simultaneously during the die-cutting process, achieving a 30% carbon reduction over the entire life cycle. Heat pump technology is used to recycle the waste heat generated by the die-cutting process to provide preheating energy for the composite station, reducing the overall energy consumption by 40%. At the same time, UV curing adhesives are used to achieve zero VOCs emissions during the composite process of aerogel and flame retardant coating.

[0026] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A new energy battery aerogel die-cutting production line, comprising an aerogel preforming device (11), a composite packaging device (9), a laser die-cutting processing device (10) and a quality inspection device (12), characterized in that: A protective box (1) is installed at the upper end of the laser die-cutting processing equipment (10), a pushing mechanism is installed on one side of the top of the protective box (1), the lower end of the pushing mechanism is connected to a lifting mechanism, the lower end of the lifting mechanism is connected to an absorption structure, a negative pressure recovery device is provided on one side of the laser die-cutting processing equipment (10), an absorption pipeline is connected to the negative pressure recovery device, the absorption pipeline is connected to the absorption mechanism, and one side of the laser die-cutting processing equipment (10) is connected to a waste heat recovery device (27) via a waste heat recovery pipeline.

2. A new energy battery aerogel die-cutting production line according to claim 1, characterized in that: The pushing mechanism comprises two hydraulic cylinders (14) fixed to one side of the upper end of the protection box (1), a connecting piece (24) is fixed to the end of the piston rod of the hydraulic cylinder (14), a slider (29) is fixed to the lower end of the connecting piece (24), a rack (17) is installed on one side of the slider (29), a guide rail (18) is fixed to one side of the protection box (1), and the slider is installed on the guide rail (18).

3. A new energy battery aerogel die-cutting production line according to claim 2, characterized in that: The lifting mechanism comprises four mounting seats fixed on one side of the protective box (1), a threaded sleeve (19) being rotatably sleeved on the mounting seat, a stud (20) being threadedly sleeved on the lower end of the threaded sleeve (19), a rotating rod (15) being fixed on the upper end of the threaded sleeve (19), a gear (16) being fixed on the upper end of the rotating rod (15), and the gear (16) and the rack (17) being meshed with each other.

4. A new energy battery aerogel die-cutting production line according to claim 1, characterized in that: The absorption structure comprises a connecting plate (21) fixed to the lower end of the stud (20), three movable plates (23) being fixed on the two connecting plates (21), the lower ends of the movable plates (23) penetrating the side wall of the protection box (1) and extending into the laser die-cutting processing equipment (10), a fixed tube (13) being fixed to one side of the movable plate (23), and three absorption covers (26) being connected to one side of the fixed tube (13) at equal intervals.

5. The new energy battery aerogel die-cutting production line according to claim 1, characterized in that: The negative pressure recovery device comprises a receiving box (3) arranged on one side of the composite packaging device (9), a collecting box (25) is provided in the receiving box (3), and one end of the collecting box (25) is connected to a negative pressure suction fan (5) via a connecting pipe (4).

6. A new energy battery aerogel die-cutting production line according to claim 5, characterized in that: The absorption pipeline comprises a connection box (2) connected to one side of the negative pressure suction fan (5), both ends of the connection box (2) are connected to the first absorption pipeline (6), one end of the two first absorption pipelines (6) are respectively connected to a connector, one end of the connector is connected to three second absorption pipelines (7), one end of the three second absorption pipelines (7) on the same side are respectively connected to a hose (22), and one end of the hose (22) is connected to one side of the fixed pipe (13).

7. The new energy battery aerogel die-cutting production line according to claim 1, characterized in that: The waste heat recovery pipeline includes two recovery pipes (28) connected to one end of the waste heat recovery device (27), the two recovery pipes (28) are respectively fixed on both sides of the laser die-cutting processing device (10), and a plurality of recovery joints (30) are connected to one side of the recovery pipe (28) at equal intervals, and the recovery joints (30) pass through the side wall of the laser die-cutting processing device (10) and extend into the laser die-cutting processing device (10).

8. A die-cutting process for a new energy battery aerogel die-cutting production line according to claims 1-7, characterized in that: The following steps are involved: S1, integrating aerogel preforming using an aerogel preforming device (11); S2, using composite packaging equipment (9) to composite the aerogel with the substrate using vacuum hot pressing technology, and encapsulating it with a PET / PI film to form a flexible thermal insulation pad; S3. Utilize laser die-cutting processing equipment (10) in combination with a servo motor driven CNC die-cutting machine. During the laser die-cutting process, an AI visual positioning system is used to calibrate the material position in real time through a high-precision CCD camera. The aerogel is die-cut and negative pressure adsorption is performed during die-cutting. The negative pressure recovery device monitors the dust concentration and negative pressure value in real time through a PLC system, automatically adjusts the dust absorption intensity, is compatible with grating sensors and alarm devices, and realizes waste recycling. At the same time, the high temperature generated is recovered through the waste heat recovery device (27); S4. Use quality inspection equipment (12) to conduct automated inspection. When conducting automated inspection, combine infrared thermal imaging, laser thickness measurement, and X-ray to achieve full online inspection, and feed the data back to the MES system. 9.S5. Seamless bonding of aerogel and other materials is achieved through automated slit coating technology.

10. The die-cutting process of the new energy battery aerogel die-cutting production line according to claim 8, characterized in that: According to step S2, the aerogel is compounded with the ceramic fiber, mica sheet, and PI film, and the lamination of the aerogel and the reinforcing material is simultaneously completed by the hot pressing roller, thereby improving the mechanical strength of the thermal insulation pad.

11. The die-cutting process of the new energy battery aerogel die-cutting production line according to claim 8, characterized in that: According to step S3, the laser die-cutting processing equipment (10) is compatible with aerogel products with a thickness of 0.5-3 mm.

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