Rapid drying device

Abstract

The utility model relates to the technical field of lithium battery production, in particular to a rapid drying device which comprises a heat insulation oven, a fresh air filtering and heating assembly, a hot air circulating and recycling assembly and a mold temperature controller. A circulating exhaust pipeline and an exhaust pipeline are arranged on the outer wall of the heat insulation oven above the exhaust fan; an air outlet of the exhaust fan is connected with the hot air circulating recycling assembly and the mold temperature controller through a one-to-two branch pipe; the drying device is integrally arranged, the occupied area is small, the manufacturing cost is reduced, the production cost of customers is reduced, and the application requirements of the customers are met; the used hot air is divided and recycled, one part of the hot air is filtered and heated and then used for drying the coated foil, and the other part of the hot air is used for preheating water in the heating water tank of the mold temperature controller, so that the heating energy consumption required by the heating water tank of the mold temperature controller is reduced, and the extra energy demand is reduced; and the overall energy utilization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, specifically a rapid drying device. Background Technology

[0002] With increasing competition in the lithium battery market, and given similar performance, price has become a crucial indicator of market competitiveness.

[0003] Lithium-ion battery production requires a separator coating machine, which is a device used to coat specific materials onto the battery separator. In modern lithium-ion battery production, the drying of the separator after coating plays a crucial role, as its performance directly affects the battery's performance and safety.

[0004] Currently, most diaphragm coating machines on the market are double-sided coating machines with a folding mechanism, which require the configuration of double-bottom double-layer ovens. This greatly increases the length of the equipment, thereby increasing the cost. Such equipment is not only inefficient but also wastes raw materials, leading to increased production costs for customers and failing to meet their application needs. Utility Model Content

[0005] The purpose of this invention is to provide a rapid drying device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rapid drying device includes an insulated oven, a fresh air filtration and heating component, a hot air circulation and recycling component, and a mold temperature controller. An exhaust fan is installed on the outer wall of the insulated oven in the middle section. A circulating exhaust duct and a discharge duct are installed on the outer wall of the insulated oven above the exhaust fan. The inlet of the exhaust fan is connected to the interior of the insulated oven. The outlet of the exhaust fan is connected to a two-way splitter pipe. One end of the splitter pipe is connected to the inlet of the circulating exhaust duct, and the other end is connected to the inlet of the discharge duct. The outlet of the circulating exhaust duct is connected to the hot air circulation and recycling component, and the outlet of the discharge duct is connected to the mold temperature controller.

[0008] As a preferred embodiment of this utility model, the hot air circulation and recycling component includes a circulating air filter, a circulating air duct, a circulating blower, a circulating heating pack assembly, and a circulating air inlet pipe. The inlet of the circulating air filter is connected to the outlet of the circulating exhaust duct, and the air inlet of the circulating blower is connected to the outlet of the circulating air filter through the circulating air duct. The circulating heating pack assembly includes a heating box, and an electric heating plate is installed inside the heating box. The air inlet of the heating box is connected to the air outlet of the circulating blower, and the air outlet of the heating box is connected to the air inlet of the circulating air inlet pipe. The air outlet of the circulating air inlet pipe is connected to the heat-insulated oven.

[0009] As a preferred embodiment of this utility model, the heat-insulating oven is equipped with multiple heat-conducting rollers connected to a servo motor. The coated foil enters the heat-insulating oven, passes through the multiple heat-conducting rollers in sequence, and extends outwards to connect with the winding roller.

[0010] As a preferred embodiment of this utility model, the mold temperature controller includes a housing and a heating water tank located inside the housing. The outlet of the discharge pipe is connected to the bottom of the housing of the heating water tank. An air outlet is provided on the side of the housing away from the discharge pipe. The top of the heating water tank is connected to the inlets of multiple heat-conducting rollers through a water outlet pipe. The outlets of multiple heat-conducting rollers are connected to the inlets on the other side of the top of the heating water tank.

[0011] In a preferred embodiment of this utility model, the fresh air filtration and heating assembly is located on the outer wall of the insulated oven on the side away from the hot air circulation and recycling assembly. The fresh air filtration and heating assembly includes a fresh air inlet pipe, a fresh air filter, a fresh air inlet duct, a fresh air blower, a fresh air heating box, and a fresh air heating inlet duct. The fresh air filter is fixed to the outer wall of the insulated oven. The inlet of the fresh air filter is connected to the outlet of the fresh air inlet duct. The outlet of the fresh air filter is connected to the inlet of the fresh air blower. The outlet of the fresh air blower is connected to the fresh air heating inlet duct through the fresh air heating box. The outlet of the fresh air heating inlet duct is connected to the insulated oven.

[0012] As a preferred embodiment of this utility model, a temperature controller is provided inside the heating water tank. The temperature controller is connected to a main controller via a wire, and the main controller is electrically connected to the electric heater inside the heating water tank via a wire.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] To address the problems in the background technology, the drying device of this application is integrated, which occupies a small area, reduces manufacturing costs, lowers customer production costs, and meets customer application needs.

[0015] By diverting and recycling the used hot air, one part of the hot air is filtered and heated for drying the coated foil, and another part of the hot air is used to preheat the water in the heating tank of the mold temperature controller, reducing the heating energy consumption required by the heating tank of the mold temperature controller, reducing additional energy demand, and improving the overall energy utilization efficiency.

[0016] The integrated drying device design has significant practical value for the lithium battery manufacturing industry. It can not only improve production efficiency and reduce costs, but also respond to the environmental protection policy of energy conservation and emission reduction, which is in line with the trend of modern industrial development. Attached Figure Description

[0017] Figure 1 This is an overall side view of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a top view of the entire utility model.

[0020] In the diagram: 1. Insulated oven; 11. Heat-conducting roller; 2. Fresh air filter and heating assembly; 21. Fresh air inlet duct; 22. Fresh air filter; 23. Fresh air inlet pipe; 24. Fresh air blower; 25. Fresh air heating box; 26. Fresh air heating inlet duct; 3. Hot air circulation and recycling assembly; 31. Circulating air filter; 32. Circulating duct; 33. Circulating blower; 34. Circulating heating pack assembly; 341. Heating box; 35. Circulating inlet duct; 4. Mold temperature controller; 41. Water outlet pipe; 5. Exhaust fan; 51. One-way / two-way pipe; 6. Circulating exhaust duct; 61. Discharge pipe. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Example

[0022] All devices in this application adopt conventional models in the prior art, and the control method is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field, so this application will not explain it in detail.

[0023] Please see Figure 1-3This utility model provides a technical solution: a rapid drying device, including an insulated oven 1, a fresh air filtration and heating assembly 2, a hot air circulation and recycling assembly 3, and a mold temperature controller 4. An exhaust fan 5 is installed on the outer wall of the middle section of the insulated oven 1. A circulating exhaust pipe 6 and a discharge pipe 61 are installed on the outer wall of the insulated oven 1 above the exhaust fan 5. The inlet of the exhaust fan 5 is connected to the interior of the insulated oven 1. The outlet of the exhaust fan 5 is connected to a two-way pipe 51. One end of the two-way pipe 51 is connected to the inlet of the circulating exhaust pipe 6, and the other end is connected to the inlet of the discharge pipe 61. The outlet of the circulating exhaust pipe 6 is connected to the hot air circulation and recycling assembly 3, and the outlet of the discharge pipe 61 is connected to the mold temperature controller 4. The fresh air filtration and heating assembly 2 is located in the middle section of the oven 1. On the outer wall of the hot oven 1 away from the hot air circulation and recycling component 3, the fresh air filtration and heating component 2 includes a fresh air inlet pipe 21, a fresh air filter 22, a fresh air inlet duct 23, a fresh air blower 24, a fresh air heating box 25, and a fresh air heating inlet duct 26. The fresh air filter 22 is fixed on the outer wall of the insulated oven 1. The air inlet of the fresh air filter 22 is connected to the air outlet of the fresh air inlet pipe 21. The air outlet of the fresh air filter 22 is connected to the air inlet of the fresh air blower 24. The air outlet of the fresh air blower 24 is connected to the fresh air heating inlet duct 26 through the fresh air heating box 25. The air outlet of the fresh air heating inlet duct 26 is connected to the insulated oven 1.

[0024] The hot air circulation and recycling component 3 includes a circulating air filter 31, a circulating air duct 32, a circulating blower 33, a circulating heating pack component 34, and a circulating air inlet pipe 35. The inlet of the circulating air filter 31 is connected to the outlet of the circulating exhaust pipe 6. The air inlet of the circulating blower 33 is connected to the outlet of the circulating air filter 31 through the circulating air duct 32. The circulating heating pack component 34 includes a heating box 341. An electric heating plate is installed inside the heating box 341. The air inlet of the heating box 341 is connected to the air outlet of the circulating blower 33. The air outlet of the heating box 341 is connected to the air inlet of the circulating air inlet pipe 35. The air outlet of the circulating air inlet pipe 35 is connected to the heat-insulated oven 1.

[0025] It should be noted that in this embodiment, the heat-insulated oven 1 serves as the drying main body, and its design purpose is mainly to maintain heat and reduce energy loss. The exhaust fan 5 is installed on the outer wall of the middle part of the oven and is responsible for guiding the flow of hot air. Through the layout of the inlet and outlet of the exhaust fan, the effective diversion and circulation of hot air is achieved.

[0026] Furthermore, the fresh air filtration and heating assembly 2 is located on the side of the insulated oven 1 away from the hot air circulation and recycling assembly 3. It is responsible for introducing fresh air and purifying and heating it through a filter and heating chamber, ensuring that the air entering the oven is clean and reaches a certain temperature. This helps maintain the air quality and temperature balance inside the oven. The fresh air filtration and heating assembly 2 is used to filter and heat the external fresh air for heating the coated foil and evaporating the solvent. A portion of the air containing the evaporated solvent is then exhausted from the insulated oven 1 by the exhaust fan 5. The exhaust fan 5 is of model number [missing information]. "The 4-72-6A centrifugal fan is suitable for applications requiring large air volume and high pressure. It is specially designed for continuous operation in high-temperature environments, possesses excellent high-temperature resistance, and can operate continuously at 400℃. During exhaust, a one-to-two pipe 51 is installed at the exhaust fan 5 outlet. One end of the one-to-two pipe 51 is connected to the inlet of the circulating exhaust pipe 6, and the other end of the one-to-two pipe 51 is connected to the inlet of the discharge pipe 61. The outlet of the circulating exhaust pipe 6 is connected to the hot air circulation and recovery component 3. The hot air circulation and recovery component 3 obtains the hot air discharged from the insulated oven 1 through the circulating exhaust pipe 6, filters and reheats it, and then sends it back into the oven to realize the reuse of heat energy, which significantly improves energy efficiency. The outlet of the discharge pipe 61 is connected to the mold temperature controller 4. The hot air discharged from the exhaust fan 5 is circulated in two parts. One part of the hot air is filtered and heated by the hot air circulation and recovery component 3 and then used for drying the coated foil, reducing energy loss and improving economic efficiency."

[0027] Furthermore, while the hot air dries the coated foil, a portion of the hot air is used to preheat the water inside the heating tank of the mold temperature controller 4, reducing the heating energy consumption required by the heating tank of the mold temperature controller 4. The mold temperature controller 4 heats the water in the tank to 100°C and delivers it to the interior of the heat-conducting roller 11 through the water outlet pipe 41. The hot water heats the surface of the heat-conducting roller 11 to 60-80°C. Driven by the servo motor assembly, the heat-conducting roller 11 drives the coated foil to move forward. The coated foil comes into contact with the heat-conducting roller 11, heating the coated foil and increasing the evaporation rate of the solvent in the coated foil, thereby increasing the production speed.

[0028] Please see Figure 2 and 3The mold temperature controller 4 includes a housing and a heating water tank located inside the housing. The outlet of the discharge pipe 61 is connected to the bottom of the housing of the heating water tank. An air outlet is provided on the side of the housing away from the discharge pipe 61. The top of the heating water tank is connected to the inlet of multiple heat-conducting rollers 11 through a water outlet pipe 41. The outlet of the multiple heat-conducting rollers 11 is connected to the inlet on the other side of the top of the heating water tank. The heat insulation oven 1 is equipped with multiple heat-conducting rollers 11 connected to a servo motor. The coated foil enters the heat insulation oven 1, passes through multiple heat-conducting rollers 11 in sequence and extends to the outside of the oven, connecting to the take-up roller. As a preferred embodiment of this utility model, a temperature controller is provided inside the heating water tank. The temperature controller is connected to a main controller through a wire. The main controller is electrically connected to the electric heater inside the heating water tank through a wire.

[0029] It should be noted that in this embodiment, the discharge pipe 61 guides a portion of the hot air to the heating water tank of the mold temperature controller 4, using waste heat to preheat the water tank, reducing additional energy consumption and improving the overall energy efficiency of the equipment.

[0030] Furthermore, the heating water tank is located inside the housing of the mold temperature controller 4. Its main function is to store and heat water to provide constant temperature control. The outlet of the discharge pipe 61 is connected to the bottom of the heating water tank. The hot air discharged from the insulated oven 1 is used to preheat the water in the heating water tank, thereby reducing additional energy consumption. The top of the heating water tank is connected to the inlet of multiple heat-conducting rollers 11 through the water outlet pipe 41. This design allows the heated water to flow directly into the heat-conducting rollers, ensuring that the heat-conducting rollers can evenly and effectively transfer heat to the coated foil. The outlet of multiple heat-conducting rollers is connected to the inlet on the other side of the top of the heating water tank, forming a closed circulation system to ensure effective heat utilization and stable temperature control. The servo motor is used to drive the heat-conducting rollers 11. Inside the insulated oven 1, precise motor control is used to achieve precise regulation of the transfer speed and tension of the coated foil.

[0031] Furthermore, a temperature controller is installed inside the heating water tank, which is connected to the main controller via wires. This intelligent control system can monitor and adjust the temperature in the water tank in real time to ensure a constant temperature during the coating process, thereby guaranteeing the drying effect and quality of the battery separator after coating. The main controller is also electrically connected to the electric heater inside the water tank to provide additional heating when needed, ensuring the system's flexibility and responsiveness.

[0032] The working process of this utility model:

[0033] In use, the fresh air filter and heating assembly 2 filters and heats the external fresh air, which is then delivered to the heat insulation oven 1 through the fresh air heating inlet duct 26. After coating, the foil material is moved forward by the heat-conducting roller 11 driven by the servo motor and enters the heat insulation oven 1. The high-temperature hot air inside the heat insulation oven 1 heats the coated foil material and evaporates the solvent. The exhaust fan 5 exhausts part of the air containing the evaporated solvent from the heat insulation oven 1. During exhaust, a one-to-two-way pipe 51 is installed at the outlet of the exhaust fan 5. One end of the one-to-two-way pipe 51 is connected to the inlet of the circulating exhaust duct 6, and the other end of the one-to-two-way pipe 51 is connected to the inlet of the exhaust duct 61. The outlet of the circulating exhaust duct 6 is connected to the hot air circulation and recycling assembly 3. Hot air from the insulated oven 1 is obtained through the circulating exhaust duct 6, filtered, and reheated before being returned to the oven, thus reusing the heat energy and significantly improving energy efficiency. The outlet of the exhaust duct 61 is connected to the mold temperature controller 4. While the hot air dries the coated foil, a portion of the hot air is used to preheat the water in the heating tank of the mold temperature controller 4. Excess gas is discharged through the outlet of the mold temperature controller 4 housing, reducing the heating energy consumption required for the heating tank of the mold temperature controller 4. The mold temperature controller 4 heats the water in the tank to 100°C and delivers it to the heat-conducting roller 11 through the water outlet pipe 41. The hot water heats the surface of the heat-conducting roller 11 to 60-80°C. Driven by the servo motor assembly, the heat-conducting roller 11 moves the coated foil forward. The coated foil comes into contact with the heat-conducting roller 11, heating the coated foil and increasing the evaporation rate of the solvent in the coated foil, thereby increasing the production speed.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid drying device, comprising an insulated oven (1), a fresh air filtration and heating assembly (2), a hot air circulation and recycling assembly (3), and a mold temperature controller (4), characterized in that: An exhaust fan (5) is provided on the outer wall of the middle part of the heat-insulated oven (1). A circulating exhaust pipe (6) and an exhaust pipe (61) are provided on the outer wall of the heat-insulated oven (1) above the exhaust fan (5). The inlet of the exhaust fan (5) is connected to the interior of the heat-insulated oven (1). The outlet of the exhaust fan (5) is connected to a two-way pipe (51). One end of the two-way pipe (51) is connected to the inlet of the circulating exhaust pipe (6). The other end of the two-way pipe (51) is connected to the inlet of the exhaust pipe (61). The outlet of the circulating exhaust pipe (6) is connected to the hot air circulation and recycling component (3). The outlet of the exhaust pipe (61) is connected to the mold temperature controller (4).

2. The rapid drying device according to claim 1, characterized in that: The hot air circulation and recycling component (3) includes a circulating air filter (31), a circulating air duct (32), a circulating blower (33), a circulating heating pack component (34), and a circulating air inlet pipe (35). The inlet of the circulating air filter (31) is connected to the outlet of the circulating exhaust pipe (6). The air inlet of the circulating blower (33) is connected to the outlet of the circulating air filter (31) through the circulating air duct (32). The circulating heating pack component (34) includes a heating box (341). An electric heating plate is installed inside the heating box (341). The air inlet of the heating box (341) is connected to the air outlet of the circulating blower (33). The air outlet of the heating box (341) is connected to the air inlet of the circulating air inlet pipe (35). The air outlet of the circulating air inlet pipe (35) is connected to the heat-insulated oven (1).

3. The rapid drying device according to claim 1, characterized in that: The heat-insulating oven (1) is equipped with multiple heat-conducting rollers (11) connected to a servo motor. The coated foil enters the heat-insulating oven (1) and passes through the multiple heat-conducting rollers (11) in sequence and extends to the outside to connect with the take-up roller.

4. The rapid drying device according to claim 3, characterized in that: The mold temperature controller (4) includes a housing and a heating water tank located inside the housing. The outlet of the discharge pipe (61) is connected to the housing at the bottom of the heating water tank. An air outlet is provided on the side of the housing away from the discharge pipe (61). The top of the heating water tank is connected to the inlets of multiple heat-conducting rollers (11) through a water outlet pipe (41). The outlets of multiple heat-conducting rollers (11) are connected to the inlets on the other side of the top of the heating water tank.

5. The rapid drying device according to claim 1, characterized in that: The fresh air filtration and heating assembly (2) is located on the outer wall of the insulated oven (1) away from the hot air circulation and recycling assembly (3). The fresh air filtration and heating assembly (2) includes a fresh air inlet pipe (21), a fresh air filter (22), a fresh air inlet duct (23), a fresh air blower (24), a fresh air heating box (25), and a fresh air heating inlet duct (26). The fresh air filter (22) is fixed on the outer wall of the insulated oven (1). The inlet of the fresh air filter (22) is connected to the outlet of the fresh air inlet pipe (21). The outlet of the fresh air filter (22) is connected to the inlet of the fresh air blower (24). The outlet of the fresh air blower (24) is connected to the fresh air heating inlet duct (26) through the fresh air heating box (25). The outlet of the fresh air heating inlet duct (26) is connected to the insulated oven (1).

6. The rapid drying device according to claim 4, characterized in that: The heating water tank is equipped with a temperature controller, which is connected to a main controller via a wire. The main controller is electrically connected to the electric heater inside the heating water tank via a wire.

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