Laser drying equipment

Abstract

The utility model discloses laser drying equipment, the laser drying equipment is used for drying battery pole pieces, the laser drying equipment comprises a mounting box, a light source module, a transmission module, an exhaust module and a detection module, the light source module can emit laser and form a laser coverage area in a closed cavity, the transmission module can drive a battery pole piece to be dried to move to a laser coverage area so that laser beams can dry the battery pole piece, the exhaust module comprises an exhaust outlet, the detection module comprises a first detection part and a second detection part, and the first detection part can detect the temperature of the battery pole piece in the drying process; and the second detection part can detect the concentration of solvent steam at the air outlet. According to the technical scheme, potential safety hazards caused by too high solvent steam concentration are prevented, and the drying quality and the production safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating equipment, in particular to laser drying equipment. Background Art

[0002] In current coating equipment, the mainstream coating drying method is to heat the air through energy sources such as electricity, natural gas, and steam, and blow dry the wet electrode after coating by hot air convection. The water, N-methylpyrrolidone (NMP) or other solvents in the coating slurry are heated and volatilized and discharged through heat conduction, so as to achieve the purpose of electrode drying. However, in the existing drying method, hot air drying conducts heat by thermal convection, and the energy utilization rate is low. The oven configured for the coating machine in the prior art occupies a large space, has high energy consumption, and is complex to maintain. There are also problems such as incomplete or uneven drying, wrinkles on the electrode after drying, or cracks in the electrode coating. In addition, the solvent vapors in the drying process cannot be discharged to the outside of the oven in time, which is likely to cause safety hazards. Utility Model Content

[0003] The embodiment of the utility model provides a laser drying device, which can prevent the potential safety hazard caused by excessively high solvent vapor concentration, and improve the drying quality and production safety.

[0004] The embodiment of the utility model provides a laser drying device, which is used to dry battery pole pieces. The laser drying device includes: an installation box, a light source module, a transmission module, an exhaust module and a detection module. The installation box includes a closed cavity. The light source module is arranged in the installation box, and the light source module can emit laser and form a laser coverage area inside the closed cavity. The transmission module is located on the side of the installation box away from the light source module, and the transmission module can drive the battery pole piece to be dried to move to the laser coverage area so that the laser beam can dry the battery pole piece. The exhaust module is arranged on the same side of the light source module as the installation box, and the exhaust module is used to exhaust the solvent vapor generated during the drying process, and the exhaust module includes an exhaust port. The detection module includes a first detection part and a second detection part, the first detection part is arranged in the installation box, and the first detection part can detect the temperature of the battery pole piece during the drying process, and the second detection part is arranged at the exhaust port, and the second detection part can detect the concentration of solvent vapor at the exhaust port.

[0005] The technical solution of the utility model adopts high-energy laser irradiation to dry the battery pole piece, which reduces energy consumption, improves the uniformity, drying speed and drying quality of the battery pole piece, and reduces the problems of pole piece cracking. The technical solution of the utility model can discharge the solvent vapor into the external environment through the exhaust module, and set up a detection module, which includes a second detection unit. The second detection unit can detect the concentration of solvent vapor at the exhaust port to prevent safety hazards caused by excessively high solvent concentration, thereby effectively ensuring the drying quality of the battery pole piece and ensuring the safety of the battery pole piece during the drying process.

[0006] According to the aforementioned embodiment of the utility model, the exhaust module further includes: an air knife assembly. The air knife assembly is arranged in a closed cavity, and is used to blow out the solvent in the battery pole piece to be dried. The air knife assembly includes an air outlet, and the air outlet is arranged toward the laser coverage area and can blow air toward the laser coverage area. The technical solution of the utility model is to arrange the air knife assembly in the exhaust module, and the air outlet of the air knife assembly can blow air toward the laser coverage area and blow out the solvent vapor, thereby preventing safety hazards caused by excessively high solvent concentration.

[0007] According to the aforementioned embodiment of the utility model, the detection module further includes: a third detection unit. The third detection unit is arranged at the air outlet, and the third detection unit is used to detect the temperature and humidity of the air blown out of the air outlet. The technical solution of the utility model is conducive to improving the efficiency of the air knife assembly in blowing out the solvent vapor, and avoiding safety problems caused by excessively high solvent concentrations, by arranging a third detection unit capable of detecting the temperature and humidity of the air blown out of the air outlet.

[0008] According to the aforementioned embodiment of the utility model, the exhaust port is arranged in the installation box, and the exhaust port can connect the closed cavity with the external environment so that the solvent vapor generated during the drying process can be discharged from the closed cavity to the external environment. The detection module also includes: a fourth detection unit. The fourth detection unit is arranged at the exhaust port, and the fourth detection unit can detect the temperature and humidity of the gas discharged from the exhaust port. The technical solution of the utility model is conducive to timely detection of the temperature and humidity of the exhaust gas by setting the fourth detection unit, which is conducive to improving the efficiency and quality of laser drying.

[0009] According to the aforementioned embodiment of the utility model, the detection module further includes: a fifth detection unit. The fifth detection unit is arranged outside the installation box, and the fifth detection unit can detect the pressure in the closed cavity. The technical solution of the utility model avoids excessive pressure in the installation box by arranging the fifth detection unit capable of detecting the pressure in the closed cavity, which is conducive to improving production safety.

[0010] According to the aforementioned embodiment of the utility model, the detection module further includes: a data collection unit. The data collection unit is electrically connected to other detection elements of the detection module, and the data collection unit can collect detection data of other detection elements of the detection module. The technical solution of the utility model is convenient for timely statistical summary of data by setting a data collection unit capable of collecting detection data of other detection elements of the detection module, and timely adjusting the parameters such as the power of the laser beam used for drying according to the obtained detection data, which is conducive to improving the efficiency and quality of laser drying.

[0011] According to the aforementioned embodiment of the utility model, the exhaust module further includes: an explosion-proof window. The explosion-proof window is arranged on the outer side of the installation box, and can be opened or closed according to the concentration of solvent vapor in the closed cavity detected by the second detection unit. The technical solution of the utility model can open the explosion-proof window when the concentration of solvent vapor in the closed cavity is too high by setting the explosion-proof window, thereby avoiding safety problems and improving the safety of the drying process.

[0012] According to the aforementioned embodiment of the utility model, the light source module includes: a laser emitting unit, an angle adjustment component and a light homogenization component. The laser emitting unit can emit laser light into a closed cavity and form a laser coverage area. The angle adjustment component is connected to the laser emitting unit, and the angle adjustment component can adjust the irradiation direction of the laser beam. The light homogenization component is arranged on the outgoing light path of the laser beam, and the light homogenization component is used to receive the laser beam and perform light homogenization on the laser beam, and project the laser beam after light homogenization to the laser coverage area.

[0013] According to the aforementioned embodiment of the utility model, the transmission module includes: a plurality of rotating rollers and a reel. A plurality of rotating rollers are arranged in the installation box, and the plurality of rotating rollers can convey the battery pole pieces. The reels are respectively arranged on both sides of the outside of the installation box, and the reels can provide tension for the pole pieces. The technical solution of the utility model can support and assist the conveying of the battery pole pieces by arranging rotating rollers, thereby preventing the battery pole pieces from shaking during the air-drying process. The reel arranged on the outside of the installation box can collect the pole pieces for storage, and at the same time, the reel also provides tension for the entire battery pole piece, ensuring that the surface of the battery pole piece remains flat during the drying process.

[0014] According to the aforementioned embodiment of the present utility model, the light source module includes two laser emitting parts, and the two laser emitting parts are arranged in sequence along the transmission direction of the battery pole piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a schematic cross-sectional structure diagram of an embodiment of the laser drying device of the utility model;

[0017] Figure 2 This is a schematic diagram of the emission principle of the laser emission unit of one embodiment of the laser drying equipment of the utility model;

[0018] Figure 3 This is a schematic diagram of a single laser emitting unit irradiating a battery electrode with laser in one embodiment of the laser drying device of the utility model;

[0019] Figure 4 It is a schematic diagram of the arrangement of a rectangular heating area formed on a pole piece by the laser drying device of the utility model;

[0020] Figure 5 This is a schematic diagram of another arrangement of rectangular heating areas formed on a pole piece by the laser drying device of the utility model.

[0021] Description of Figure Numbers:

[0022] Installation box-100, laser emitting unit-200, transmission module-300, exhaust module-400, detection module-500, battery pole piece-600;

[0023] Closed cavity 110, laser coverage area 210, rotating roller 310, scroll 320, exhaust port 410, wind knife assembly 420, explosion-proof window 430, bellows 440, exhaust port 450, first detection part 510, second detection part 520, third detection part 530, fourth detection part 540, fifth detection part 550;

[0024] Air outlet-421;

[0025] Transmission direction - X1.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] The embodiment of the utility model provides a laser drying device, which can prevent the potential safety hazard caused by excessively high solvent vapor concentration, and improve the drying quality and production safety.

[0031] The utility model provides a laser drying device, which is used to dry battery pole pieces, such as Figures 1 to 5 As shown, the laser drying device includes: an installation box 100, a light source module, a transmission module 300, an exhaust module 400 and a detection module 500. The installation box 100 includes a box bottom, a box wall arranged around the box bottom and connected to the box bottom, and a box cover arranged opposite to the box bottom. The box bottom, the box wall and the box cover are connected to each other to form a closed cavity 110. The light source module is arranged in the installation box 100, as shown in FIG. Figures 1 to 3As shown, the light source module can emit laser and form a laser coverage area inside the closed cavity. The transmission module 300 is located on the side of the installation box 100 away from the light source module. The transmission module 300 can drive the battery pole piece to be dried to move to the laser coverage area 210 so that the laser beam can dry the battery pole piece. After the battery pole piece is dried, the transmission module 300 can drive the battery pole piece to leave the laser coverage area 210. The exhaust module 400 is arranged on the same side as the light source module in the installation box 100. The exhaust module 400 is used to exhaust the solvent vapor generated during the drying process. The exhaust module 400 includes an exhaust port 410. The detection module 500 includes a first detection unit 510 and a second detection unit 520. The first detection unit 510 is arranged in the installation box 100. The first detection unit 510 can detect the temperature of the battery pole piece during the drying process. The second detection unit 520 is arranged at the exhaust port 410. The second detection unit 520 can detect the concentration of solvent vapor at the exhaust port 410.

[0032] The technical solution of the utility model adopts high-energy laser irradiation to dry the battery pole piece, which reduces energy consumption, improves the uniformity, drying speed and drying quality of the battery pole piece, and reduces the problems of pole piece cracking. The technical solution of the utility model can discharge the solvent vapor into the external environment through the exhaust module 400, and set up a detection module 500. The detection module 500 includes a second detection unit 520. The second detection unit 520 can detect the concentration of solvent vapor at the exhaust port 410 to prevent safety hazards caused by excessively high solvent concentration, thereby effectively ensuring the drying quality of the battery pole piece and ensuring the safety of the battery pole piece during the drying process.

[0033] In the embodiment of the utility model, the first detection unit 510 can be an infrared detector, which detects the temperature of the battery pole piece during the drying process by infrared thermal imaging. The first detection unit 510 can also be set in other forms to detect the temperature of the battery pole piece during the drying process. The second detection unit 520 can be an NMP concentration detector, which is set in the exhaust port 410 to detect the NMP concentration.

[0034] In the embodiment of the present utility model, Figures 1 to 3 As shown, the light source module includes: a laser emitting unit 200, an angle adjustment component and a light homogenizing component. The laser emitting unit 200 is arranged on the box cover, and the laser emitting unit 200 can emit laser into the closed cavity 110 to form a laser coverage area 210. The angle adjustment component is connected to the laser emitting unit 200, and the angle adjustment component can adjust the irradiation direction of the laser beam. The light homogenizing component is arranged on the outgoing light path of the laser beam, and the light homogenizing component is used to receive the laser beam and perform light homogenization on the laser beam, and project the laser beam after light homogenization to the laser coverage area 210.

[0035] The light source module includes two laser emitting units 200, and the two laser emitting units 200 are arranged in sequence along the transmission direction of the battery pole piece. Figures 4 to 5 As shown, it can also include multiple parallel laser emitting units 200, and multiple laser coverage areas 210 can be generated on the surface of the battery pole piece. The light source module can be a non-contact light source, and the emission source of the light source module includes but is not limited to light emitting diodes, infrared lamps, microwaves, lasers, and vertical cavity surface emitting lasers.

[0036] like Figure 1 As shown, the exhaust module 400 also includes: an air knife assembly 420. The air knife assembly 420 is arranged in the closed cavity 110. The air knife assembly 420 is used to blow out the solvent in the battery pole piece to be dried. The air knife assembly 420 includes an air outlet 421. The air outlet 421 is arranged toward the laser coverage area 210 and can blow air toward the laser coverage area 210. The technical solution of the utility model is to arrange the air knife assembly 420 in the exhaust module 400. The air outlet 421 of the air knife assembly 420 can blow air toward the laser coverage area 210 and blow out the solvent vapor to prevent safety hazards caused by excessive solvent concentration. The laser emitting part 200 emits laser from above to dry the battery pole piece. The air knife assembly 420 is arranged around the laser emitting part 200. The air knife assembly 420 can blow out hot air to dry the battery pole piece, and can blow away the generated solvent vapor while drying the pole piece.

[0037] like Figure 1 As shown, the detection module 500 also includes: a third detection unit 530. The third detection unit 530 is arranged at the air outlet 421, and the third detection unit 530 is used to detect the temperature and humidity of the air blown out of the air outlet 421. The technical solution of the utility model is conducive to improving the efficiency of the wind knife assembly 420 in blowing out solvent vapor and avoiding safety problems caused by excessive solvent concentration by setting the third detection unit 530 that can detect the temperature and humidity of the air blown out of the air outlet 421. In an embodiment of the utility model, the third detection unit 530 is a fresh air detector, which is used to detect the temperature and humidity of the fresh air used for drying blown out from the air outlet 421 of the wind knife assembly 420.

[0038] like Figure 1As shown, the exhaust port 410 is provided at the installation box 100, and the exhaust port 410 can connect the closed cavity 110 with the external environment so that the solvent vapor generated during the drying process can be discharged from the closed cavity 110 to the external environment. The detection module 500 also includes: a fourth detection unit 540. The fourth detection unit 540 is provided at the exhaust port 410, and the fourth detection unit 540 can detect the temperature and humidity of the gas discharged from the exhaust port 410. The technical solution of the utility model is conducive to timely detection of the temperature and humidity of the exhaust gas by setting the fourth detection unit 540, which is conducive to improving the efficiency and quality of laser drying. In the embodiment of the utility model, the fourth detection unit 540 is an exhaust detector.

[0039] like Figure 1 As shown, the detection module 500 further includes: a fifth detection unit 550. The fifth detection unit 550 is disposed outside the installation box 100, and the fifth detection unit 550 can detect the pressure in the closed cavity 110. The technical solution of the utility model avoids excessive pressure in the installation box 100 by disposing the fifth detection unit 550 capable of detecting the pressure in the closed cavity 110, which is conducive to improving production safety.

[0040] In the embodiment of the utility model, the detection module 500 also includes: a data collection unit. The data collection unit is electrically connected to other detection elements of the detection module 500, and the data collection unit can collect detection data of other detection elements of the detection module 500. The technical solution of the utility model is convenient for timely statistical summary of data by setting a data collection unit capable of collecting detection data of other detection elements of the detection module 500, and timely adjusting parameters such as the power of the laser beam used for drying according to the obtained detection data, which is conducive to improving the efficiency and quality of laser drying. In the embodiment of the utility model, a plurality of data collection units are set, and the data collection units are located in the air outlet 421 and the exhaust port 410, and the data collection unit can also be set on the box wall facing the closed cavity 110.

[0041] In the embodiment of the present invention, the light source module further includes: a high-voltage transformer, and the output power of the laser emitting unit 200 is adjusted by voltage transformation of the high-voltage transformer.

[0042] like Figure 1As shown, the exhaust module 400 also includes: an explosion-proof window 430. The explosion-proof window 430 is arranged at the box cover of the installation box 100, and the explosion-proof window 430 can be opened or closed according to the solvent vapor concentration in the closed cavity 110 detected by the second detection unit 520. The technical solution of the utility model can open the explosion-proof window 430 when the solvent vapor concentration in the closed cavity 110 is too high by setting the explosion-proof window 430, thereby avoiding safety problems and improving the safety of the drying process. The explosion-proof box can be opened manually, or the explosion-proof box can be electrically connected to the second detection unit 520, and the explosion-proof window 430 can be automatically opened or closed according to the solvent concentration signal in the installation box 100 detected by the second detection unit 520.

[0043] In the embodiment of the utility model, the exhaust module 400 further includes: a bellows 440. The bellows 440 is disposed in the closed cavity 110 and extends along the transmission direction of the battery pole piece. The bellows 440 is connected to the wind knife assembly 420, and the hot air in the bellows 440 is blown out through the air outlet 421 of the wind knife assembly 420.

[0044] In the embodiment of the utility model, the exhaust module 400 further includes an air inlet 450. The air inlet 450 and the air outlet 410 are arranged in sequence on the box cover to discharge the steam generated during the drying process of the battery pole piece.

[0045] In the embodiment of the utility model, the box wall includes a first opening and a second opening arranged opposite to each other, and the transmission module 300 delivers the battery pole pieces to be dried into the installation box 100 through the first opening, and delivers the battery pole pieces to be dried out of the installation box 100 through the second opening. Figure 1 As shown, the transmission module 300 includes: a plurality of rotating rollers 310 and a reel 320. The plurality of rotating rollers 310 are arranged in the installation box 100, and the plurality of rotating rollers 310 can convey the battery pole pieces. The reels 320 are respectively arranged on both sides of the outside of the installation box 100, and the reels 320 can provide tension for the pole pieces. The technical solution of the utility model can support and assist the conveying of the battery pole pieces and prevent the battery pole pieces from shaking during the air-drying process by arranging the rotating rollers 310. The reel 320 arranged outside the installation box 100 can collect the pole pieces for storage, and the reel 320 also provides tension for the entire battery pole piece to ensure that the surface of the battery pole piece remains flat during the drying process.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A laser drying device, characterized in that: The laser drying device is used to dry the battery pole piece, and the laser drying device comprises: An installation box, the installation box comprising a closed cavity; A light source module, the light source module is arranged in the installation box, the light source module can emit laser and form a laser coverage area inside the closed cavity; A transmission module, the transmission module is located at a side of the installation box away from the light source module, and the transmission module can drive the battery pole piece to be dried to the laser coverage area so that the laser beam can dry the battery pole piece; an exhaust module, the exhaust module and the light source module being disposed on the installation box at the same side, the exhaust module being used to exhaust solvent vapor generated during the drying process, the exhaust module comprising an exhaust port; and The detection module includes a first detection unit and a second detection unit. The first detection unit is arranged at the installation box, and the first detection unit can detect the temperature of the battery electrode during the drying process. The second detection unit is arranged at the exhaust port, and the second detection unit can detect the solvent vapor concentration at the exhaust port.

2. The laser drying device according to claim 1, characterized in that: The exhaust module further comprises: A wind knife assembly is arranged in the closed cavity, and is used to blow out the solvent in the battery electrode to be dried. The wind knife assembly includes an air outlet, and the air outlet is arranged toward the laser coverage area and can blow air toward the laser coverage area.

3. The laser drying device according to claim 2, characterized in that: The detection module also includes: The third detection unit is arranged at the air outlet, and is used to detect the temperature and humidity of the air blown out of the air outlet.

4. The laser drying device according to claim 1, characterized in that: The exhaust port is arranged on the installation box, and the exhaust port can connect the closed cavity with the external environment so that the solvent vapor generated during the drying process can be discharged from the closed cavity to the external environment; The detection module also includes: A fourth detection unit is provided at the exhaust port, and the fourth detection unit can detect the temperature and humidity of the gas exhausted from the exhaust port.

5. The laser drying device according to claim 1, characterized in that: The detection module also includes: A fifth detection unit is provided outside the installation box, and the fifth detection unit can detect the pressure in the closed cavity.

6. The laser drying device according to any one of claims 1 to 5, characterized in that: The detection module also includes: A data collection unit is electrically connected to the detection module, and the data collection unit can collect detection data of the detection module.

7. The laser drying device according to claim 1, characterized in that: The exhaust module further comprises: An explosion-proof window is arranged on the outer side of the installation box, and the explosion-proof window can be opened or closed according to the solvent vapor concentration in the closed cavity detected by the second detection unit.

8. The laser drying device according to claim 1, characterized in that: The light source module comprises: A laser emitting unit, which can emit laser into the closed cavity and form a laser coverage area; An angle adjustment component, the angle adjustment component is connected to the laser emitting unit, and the angle adjustment component can adjust the irradiation direction of the laser beam; and A light homogenization component is arranged on the outgoing light path of the laser beam, and is used to receive the laser beam and perform light homogenization on the laser beam, and project the laser beam after light homogenization to the laser coverage area.

9. The laser drying device according to claim 1, characterized in that: The transmission module comprises: a plurality of rotating rollers, the plurality of rotating rollers being arranged in the installation box, the plurality of rotating rollers being capable of conveying battery pole pieces; and The reels are respectively arranged on two sides of the outside of the installation box, and the reels can provide tension for the pole piece.

10. The laser drying device according to claim 8, characterized in that: The light source module comprises two laser emitting parts, and the two laser emitting parts are arranged in sequence along the transmission direction of the battery pole piece.

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