Industrial-grade double radiation source laser coupling turbulent hot air circulation drying system

Abstract

The utility model provides a kind of industrial-grade double radiation source laser coupling turbulent hot air circulation drying system including the oven system for drying lithium battery pole piece base material, first air nozzle mechanism and second air nozzle mechanism are equipped in the oven system, the oven system is equipped with exhaust port, the exhaust gas discharged by the exhaust port is discharged after passing through NMP recovery system, the oven system is further equipped with being equipped with circulating air port, the circulating air port is connected first air nozzle mechanism and second air nozzle mechanism by circulating fan and air pipe, the exhaust gas of circulating air port is respectively conveyed to first air nozzle mechanism and second air nozzle mechanism by the circulating fan.The utility model has the advantages of good uniformity, low energy consumption, high heating efficiency, etc., by strengthening intelligent monitoring measures, play a preventive and early warning role, further eliminate the occurrence of hidden trouble.

Description

Technical Field

[0001] This utility model relates to the field of NMP exhaust gas treatment equipment design technology for lithium battery coating machines, and in particular to an industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system. Background Technology

[0002] NMP exhaust gas treatment is a critical issue facing the lithium battery industry. Traditional hot air drying methods require heating the air first using heating devices (electric heating, natural gas heating, hot steam, heat transfer oil, etc.), and then transferring the heat to the object being dried via a hot air jet. This method suffers from slow heat conduction, low efficiency, high energy consumption, and problems such as uneven drying, surface hardening, and internal moisture residue. Furthermore, traditional hot air drying relies on air convection to transfer heat, requiring gradual conduction from the surface to the interior, resulting in slow heat transfer and significant heat loss. In contrast, laser drying directly applies radiation energy to the target area, achieving high efficiency in converting light energy to heat energy. This allows for rapid localized heating, significantly shortening drying time. For example, in drying thin surfaces (such as coatings, films, and electronic components), laser drying rates are 5 to 50 times faster than hot air. However, while single-laser drying can achieve rapid localized heating, the concentrated heat energy can lead to localized overheating damage to the material, making it unsuitable for non-photothermal sensitive materials, and the equipment cost is high. Further improvements are needed. Utility Model Content

[0003] This invention addresses the shortcomings of the prior art by providing an industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system with good uniformity, low energy consumption, and high heating efficiency.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows:

[0005] This invention provides an industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system, including an oven system for drying lithium battery electrode substrates. The oven system is equipped with a first air nozzle mechanism and a second air nozzle mechanism.

[0006] The oven system is equipped with an exhaust port, and the exhaust gas emitted from the exhaust port is discharged after passing through an NMP recovery system.

[0007] The oven system is also equipped with a circulating air vent, which is connected to the first air nozzle mechanism and the second air nozzle mechanism via a circulating fan and air duct.

[0008] The exhaust gas from the circulating air inlet is respectively transported by the circulating fan to the first air nozzle mechanism and the second air nozzle mechanism.

[0009] Furthermore, the oven system is equipped with a laser heating engine device, which emits a laser beam that penetrates and irradiates both sides of the lithium battery electrode substrate, achieving simultaneous heating on both sides.

[0010] Furthermore, a first temperature sensor is provided on one side of the laser heating engine device for detecting the temperature inside the oven system.

[0011] Furthermore, the oven system is also equipped with an NMP concentration meter for detecting the NMP concentration within the oven system.

[0012] Furthermore, it also includes a fresh air inlet, the air duct connected to the fresh air inlet merges with the air duct connected to the circulating air inlet and then connects to the circulating fan, the air duct between the circulating fan and the first air nozzle mechanism and the second air nozzle mechanism is heated by a heating pack, and the air duct between the circulating fan and the first air nozzle mechanism and the second air nozzle mechanism is also equipped with a second temperature sensor.

[0013] Furthermore, both the first and second air nozzle mechanisms consist of multiple air outlet structures.

[0014] The first nozzle mechanism and the second nozzle mechanism are respectively located on both sides of the lithium battery electrode substrate.

[0015] The multiple air outlet structures of the first or second air outlet mechanism are connected by air ducts.

[0016] The beneficial effects of this utility model are as follows:

[0017] The industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system provided by this utility model has the advantages of good uniformity, low energy consumption, and high heating efficiency. This application greatly improves the heat transfer speed through radiation-turbulent hot air coupling drying technology, which can increase the conveyor belt speed by 1.3 to 1.5 times compared with traditional equipment. In addition, the composite drying efficiency is increased to 75% compared with the traditional hot air thermal efficiency, and the energy saving is 30% compared with traditional equipment. 3. By strengthening intelligent monitoring measures, it plays a role in prevention and early warning, further eliminating the potential for problems. Attached Figure Description

[0018] Figure 1 This is a structural diagram of an industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system according to this utility model. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0020] like Figure 1As shown, this utility model provides an industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system, including an oven system 1 for drying lithium battery electrode substrate 100. The oven system 1 is equipped with a first air nozzle mechanism 2 and a second air nozzle mechanism 3.

[0021] The oven system 1 is equipped with an exhaust port 4. The exhaust gas emitted from the exhaust port 4 is discharged after passing through the NMP recovery system 5.

[0022] The oven system 1 is also equipped with a circulating air vent 6, which is connected to the first air nozzle mechanism 2 and the second air nozzle mechanism 3 via a circulating fan 7 and an air duct 8.

[0023] The exhaust gas from the circulating air inlet 6 is transported by the circulating fan 7 to the first air nozzle mechanism 2 and the second air nozzle mechanism 3 respectively.

[0024] In this embodiment, the oven system 1 is equipped with a laser heating engine device 9. The laser beam emitted by the laser heating engine device 9 penetrates and irradiates the lithium battery electrode substrate 100 from both the top and bottom sides, thereby achieving simultaneous heating on both sides.

[0025] In this embodiment, a first temperature sensor 10 is provided on one side of the laser heating engine device 9 for detecting the temperature inside the oven system 1.

[0026] In this embodiment, the oven system 1 is also equipped with an NMP concentration meter 12, which is used to detect the NMP concentration in the oven system 1.

[0027] In this embodiment, a fresh air vent 300 is also included. The air duct 8 connected to the fresh air vent merges with the air duct 8 connected to the circulating air vent 6 and then connects to the circulating fan 7. The air duct 8 between the circulating fan 7 and the first air nozzle mechanism 2 and the second air nozzle mechanism 3 is heated by the heating pack 200. The air duct 8 between the circulating fan 7 and the first air nozzle mechanism 2 and the second air nozzle mechanism 3 is also provided with a second temperature sensor 13.

[0028] In this embodiment, the first air nozzle mechanism 2 and the second air nozzle mechanism 3 are composed of multiple air outlet structures 14.

[0029] The first nozzle mechanism 2 and the second nozzle mechanism 3 are respectively located on both sides of the lithium battery electrode substrate.

[0030] Multiple air outlet structures of the first air outlet mechanism 2 or the second air outlet mechanism 3 are connected by air duct 8.

[0031] In this embodiment, multiple sets of laser heating engine devices 9 are symmetrically arranged on both sides of the oven system 1 according to the required heating power and conveyor speed. Each set of laser heating engine devices 9 has adjustable power and scanning path. The laser beam penetrates and irradiates the material from both the top and bottom, achieving simultaneous heating on both sides. On the same side of the laser heating engine devices 9, a first air nozzle mechanism 2 and a second air nozzle mechanism 3 are arranged at a certain interval to release hot air. The hot air serves two purposes: first, it provides static pressure for the electrode suspension conveyor; second, it quickly carries the solvent evaporated during drying out of the oven system 1, maintaining the solvent concentration within the oven at a set level. The temperature inside the oven system 1 is regulated by a PID temperature control module (range 20–150℃), with temperature accuracy controlled within 3℃ above and below the set value. Multiple infrared temperature sensors and concentration sensors are arranged inside the oven system 1 to monitor material surface and environmental parameters in real time. The laser power, fan speed, and inlet air temperature are adjusted in conjunction with the PLC controller. The intelligent control system of the oven automatically adjusts the laser power and hot air intensity according to the thickness and solid content of each batch of material, optimizing the drying curve. The specific operating parameters of this embodiment are as follows:

[0032] Setting parameters: Laser power density 100kW / m 2 (940nm), wind temperature 105℃, wind speed 15m / s

[0033] Operation process:

[0034] The electrode sheets enter the drying chamber via a conveyor belt (speed 2m / s).

[0035] Laser module performs micro-area flash evaporation on the surface (action time 0.3-0.5s).

[0036] The turbulent airflow simultaneously carries away the vaporized solvent (releasing the relative concentration from 35% to 10%).

[0037] The industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system provided by this utility model has the advantages of good uniformity, low energy consumption, and high heating efficiency. This application greatly improves the heat transfer speed through radiation-turbulent hot air coupling drying technology, which can increase the conveyor belt speed by 1.3 to 1.5 times compared with traditional equipment. In addition, the composite drying efficiency is increased to 75% compared with the traditional hot air thermal efficiency, and the energy saving is 30% compared with traditional equipment. 3. By strengthening intelligent monitoring measures, it plays a role in prevention and early warning, further eliminating the potential for problems.

[0038] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system, characterized in that: This includes an oven system for drying lithium battery electrode substrates, the oven system comprising a first air nozzle mechanism and a second air nozzle mechanism. The oven system is equipped with an exhaust port, and the exhaust gas emitted from the exhaust port is discharged after passing through an NMP recovery system. The oven system is also equipped with a circulating air vent, which is connected to the first air nozzle mechanism and the second air nozzle mechanism via a circulating fan and air duct. The exhaust gas from the circulating air inlet is respectively transported by the circulating fan to the first air nozzle mechanism and the second air nozzle mechanism.

2. The industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system according to claim 1, characterized in that: The oven system is equipped with a laser heating engine device. The laser beam emitted by the laser heating engine device penetrates and irradiates both sides of the lithium battery electrode substrate, achieving simultaneous heating on both sides.

3. The industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system according to claim 2, characterized in that: A first temperature sensor is provided on one side of the laser heating engine device for detecting the temperature inside the oven system.

4. The industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system according to claim 1, characterized in that: The oven system is also equipped with an NMP concentration meter for detecting the NMP concentration within the oven system.

5. The industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system according to claim 1, characterized in that: It also includes a fresh air inlet, the air duct connected to the fresh air inlet merges with the air duct connected to the circulating air inlet and then connects to the circulating fan, the air duct between the circulating fan and the first air nozzle mechanism and the second air nozzle mechanism is heated by a heating pack, and the air duct between the circulating fan and the first air nozzle mechanism and the second air nozzle mechanism is also equipped with a second temperature sensor.

6. The industrial-grade dual-radiation-source laser-coupled turbulent hot air circulation drying system according to claim 1, characterized in that: The first and second air nozzle mechanisms are composed of multiple air outlet structures. The first air nozzle mechanism and the second air nozzle mechanism are respectively disposed on both sides of the lithium battery electrode substrate. The multiple air outlet structures of the first or second air outlet mechanism are connected by air ducts.

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