Infrared hot air mixed drying device

Abstract

The application discloses an infrared hot air mixed drying device, which comprises a rack, a heating component and a baking component which are connected and communicated, a heating chamber for providing hot air to the baking component is arranged in the heating component; the baking component comprises a bellows connected with the heating component and a reciprocating mechanism arranged opposite to the bellows, a plurality of air nozzles are formed on the bellows and are arranged towards the reciprocating mechanism, and the reciprocating mechanism is movably connected in the baking component along the arrangement direction of the air nozzles; the baking component is further provided with an infrared lamp tube which is used in combination with the heating component, and the infrared lamp tube is arranged corresponding to the reciprocating mechanism; compared with the prior art, the mixed drying of the pole piece by the hot air and the infrared ray can prevent the concentrated drying of the hot air and the air mold generated by the infrared ray, and in addition, the hot air or the infrared mode can be used alone according to specific needs, the quick switching of multiple drying modes is realized, and the drying efficiency of the pole piece is improved.

Description

Technical Field

[0001] This invention relates to the field of lithium battery production technology, specifically to an infrared hot air mixing and drying device. Background Technology

[0002] The drying process of lithium-ion battery electrodes involves placing the coated slurry electrode sheet into an oven. Heating inside the oven causes solvent evaporation, inducing a reduction in the thickness of the wet coating. Graphite particles gradually approach each other until they form a densest packing state, at which point the coating shrinks and stops. Further solvent evaporation forces the gas-liquid interface into the porous structure, ultimately forming a porous dry electrode coating. Currently, the commonly used drying methods are divided into two types: hot air drying and infrared drying.

[0003] Chinese Patent Application No. 201610963753.1 discloses an infrared hot air drying system for electrodes. The disclosed drying system includes an unwinding module, a hot roller module, a drying oven module, a drive module, and a rewinding module. The unwinding module is equipped with an unwinding correction component, an unwinding swing roller, and an unwinding pressure platform component. The electrode substrate passes through the unwinding correction component, the unwinding swing roller, and the unwinding pressure platform component in sequence and enters the hot roller module. The hot roller module is equipped with multiple hot rollers. The electrode substrate passes through each hot roller in sequence and enters the drying oven module. The drying oven module has furnace rollers arranged vertically and horizontally inside the box. Multiple infrared lamps are arranged between the furnace rollers. A hot air circulation structure and a cooling circulation structure are also provided on one side of the box. The electrode substrate passes through the furnace rollers in sequence and enters the drive module and then the rewinding module. Chinese Patent Application No. 202222023741.4 discloses an infrared drying device and equipment for electrodes. The disclosed external drying device includes a lampshade, a movable adjustment frame, an infrared light source, and an adjustment mechanism. The infrared light source is mounted on the movable adjustment frame, which is located inside the lampshade. The adjustment mechanism adjusts the distance between the movable adjustment frame and the light outlet of the lampshade. The electrode drying equipment includes an upper hull, a lower hull, multiple hot air drying devices, and multiple of the aforementioned infrared drying devices for electrodes. The upper and lower hulls are arranged opposite each other, and each of the hot air drying devices is staggered on opposite sides of the upper and lower hulls. Each of the infrared drying devices for electrodes is mounted on the upper hull and is arranged opposite to the hot air drying devices on the lower hull.

[0004] In the aforementioned prior art, the drying of the electrode sheet is usually carried out by hot air or infrared radiation alone. During infrared drying, after the moisture on the electrode sheet surface evaporates, a very thin gas film will form on the electrode sheet surface. The relative humidity of the gas film is relatively high, which hinders the subsequent discharge of moisture and is not conducive to the drying process. During hot air drying, the concentrated drying of hot air can easily cause the temperature of the electrode sheet surface to rise rapidly, which may cause damage to the electrode sheet. Summary of the Invention

[0005] The present invention aims to overcome the defects in the prior art and provide an infrared hot air mixing drying device that can achieve arbitrary switching or mixing of infrared hot air.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: an infrared hot air mixing drying device, comprising a frame, wherein a heating component and a baking component are connected and arranged on the frame, and a heating chamber for providing hot air to the baking component is provided inside the heating component; the baking component includes a wind box connected to the heating component and a reciprocating motion mechanism arranged opposite to the wind box, wherein a plurality of air nozzles are formed on the wind box and arranged toward the reciprocating motion mechanism, and the reciprocating motion mechanism is movably connected to the baking component along the arrangement direction of the plurality of air nozzles; the baking component is also provided with an infrared lamp tube used in combination with the heating component, and the infrared lamp tube is arranged corresponding to the reciprocating motion mechanism.

[0007] As a preferred embodiment of the present invention, the heating assembly includes a heating housing mounted on a frame. The heating housing has an air distribution chamber and a mixing chamber connected to opposite sides of the heating chamber. An air distribution valve mechanism is provided between the air distribution chamber and the heating chamber. The heating chamber is equipped with a heater for heating cold air, and the air distribution chamber is equipped with a circulating fan for drawing in cold air.

[0008] As a preferred embodiment of the present invention, the heating shell is further provided with an exhaust chamber connected to the baking assembly, the exhaust chamber is provided with an exhaust fan for exhausting air, the heating shell is provided with an air inlet and an air outlet, the air inlet is connected to the air distribution chamber, the air outlet is connected to the exhaust chamber, and the heating shell is also provided with an air distribution pipe connected to the air distribution chamber and the air mixing chamber.

[0009] As a preferred embodiment of the present invention, the air distribution valve mechanism includes a plurality of air distribution plates rotatably disposed between the air distribution chamber and the heating chamber and a motor unit that drives the air distribution plates to rotate. A connecting rod that drives the air distribution plates to move together is provided between adjacent air distribution plates, and a rotating shaft for connecting the motor unit and the air distribution plates is provided between the motor unit and the air distribution plates.

[0010] As a preferred embodiment of the present invention, the baking assembly includes a baking shell disposed on a frame, and a bellows and a reciprocating motion mechanism disposed within the baking shell.

[0011] In a preferred embodiment of the present invention, the baking shell has a hot air inlet and a hot air outlet that are connected to the heating shell, the hot air inlet is connected to the mixing chamber, and the hot air outlet is connected to the exhaust chamber.

[0012] As a preferred embodiment of the present invention, the wind box has an upper wind chamber and a lower wind chamber. The lower wind chamber is provided with a ventilation pipe that communicates with the upper wind chamber, and the lower wind chamber is also provided with a wind distribution plate for making the hot air blow out evenly.

[0013] As a preferred embodiment of the present invention, a plurality of the air nozzles are connected to the bottom of the air box, and a plurality of the air nozzles are connected to the lower air chamber.

[0014] As a preferred embodiment of the present invention, the reciprocating motion mechanism includes a guide rail and a chain arranged along the length of the guide rail. The guide rail is provided with a heating plate and a tray for placing electrode sheets. The chain synchronously drives the heating plate and the tray to move. The end of the chain is provided with a gear shaft for driving the chain transmission. The baking shell is provided with a motor and a coupling for driving the gear shaft to rotate.

[0015] As a preferred embodiment of the present invention, a clamp for connecting the heating shell and the baking shell is provided between the heating shell and the baking shell. The clamp includes a first mounting seat disposed on the heating shell and a second mounting seat disposed on the baking shell. A handle is rotatably provided on the second mounting seat, and a fixing member is provided on the handle to engage with the first mounting seat.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The heating and baking components are connected. The baking component is equipped with an infrared lamp and a reciprocating motion mechanism, and the reciprocating motion mechanism corresponds to the infrared lamp. The electrode is placed on the reciprocating motion mechanism and moves under the action of the reciprocating motion mechanism. When drying the electrode, the electrode is dried by a mixture of hot air and infrared rays, which prevents the concentrated drying of hot air and the air bubbles generated by infrared rays. In addition, hot air or infrared can be used separately according to specific needs, realizing the rapid switching of multiple drying modes and improving the drying efficiency of the electrode.

[0018] 2. Furthermore, the airflow of cold and hot air is controlled by an air distribution valve structure located between the air distribution chamber and the heating chamber. When cold air enters the air distribution chamber, the rotation angle of the air distribution vanes is adjusted by the motor unit, thereby controlling the airflow entering the heating chamber. This, in turn, ensures the mixing ratio of cold and hot air in the mixing chamber, thus achieving precise control of the hot air temperature. This ensures that the temperature of the hot air used for drying the electrode meets the requirements, improves the drying efficiency of the electrode, and guarantees the quality of the electrode. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the heating component of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the heating component of the present invention;

[0022] Figure 4 This is a schematic diagram of the air distribution valve mechanism;

[0023] Figure 5 This is a schematic diagram of the baking assembly;

[0024] Figure 6 This is a schematic diagram of the reciprocating motion mechanism;

[0025] Figure 7 This is a schematic diagram of the bellows structure;

[0026] Figure 8 This is a schematic diagram of the clamp's structure.

[0027] Reference numerals: Heating component 1, heating shell 101, exhaust port 1011, air inlet 1012, exhaust fan 102, circulating fan 103, heating chamber 104, heater 1041, air distribution duct 105, air distribution chamber 106, mixing chamber 107, air distribution valve mechanism 108, motor unit 1081, rotating shaft 1082, air distribution plate 1083, connecting rod 1084, exhaust chamber 109, baking component 2, baking shell 201, hot air inlet 2011, hot air outlet 2012 202 reciprocating motion mechanism, 2021 motor, 2022 coupling, 2023 gear shaft, 2024 chain, 2025 guide rail, 2026 heating plate, 2027 tray, 203 nozzle, 204 infrared lamp tube, 205 air box, 2051 upper air chamber, 2052 lower air chamber, 2053 ventilation pipe, 2054 air distribution plate, 3 frame, 301 foot cup, 302 angle iron, 4 clamp, 401 first mounting base, 402 second mounting base, 403 handle, 404 fastener. Detailed Implementation

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] like Figures 1-8 As shown, an infrared hot air mixing drying device includes a frame 3, on which a heating component 1 and a baking component 2 are connected and connected. The heating component 1 has a heating chamber 104 for supplying hot air to the baking component 2. The baking component 2 includes a wind box 205 connected to the heating component 1 and a reciprocating motion mechanism 202 disposed opposite to the wind box 205. The wind box 205 has a plurality of air nozzles 203 disposed toward the reciprocating motion mechanism 202. The reciprocating motion mechanism 202 is movably connected to the baking component 2 along the arrangement direction of the plurality of air nozzles 203. The baking component 2 is also provided with an infrared lamp tube 204 used in combination with the heating component 1. The infrared lamp tube 204 is disposed corresponding to the reciprocating motion mechanism 202.

[0030] Furthermore, the heating component 1 and the baking component 2 are fixedly mounted on the frame 3 by angle iron 302. The bottom of the frame 3 is provided with foot cups 301 for stabilizing the frame, and the foot cups 301 abut against the ground. When cold air enters the heating component 1, it is heated in the heating chamber 104. The heated air enters the air box 205. The electrode is placed in the reciprocating motion mechanism 202. Under the action of the reciprocating motion mechanism 202, the electrode is driven to reciprocate, so that the electrode can be heated evenly.

[0031] The heating assembly 1 includes a heating housing 101 mounted on a frame 3. The heating housing 101 contains an air distribution chamber 106 and a mixing chamber 107 connected to opposite sides of a heating chamber 104. An air distribution valve mechanism 108 is provided between the air distribution chamber 106 and the heating chamber 104. The heating chamber 104 contains a heater 1041 for heating cold air, and the air distribution chamber 106 contains a circulating fan 103 for drawing in cold air. The heating housing 101 also contains an exhaust chamber 109 connected to the baking assembly 2. The exhaust chamber 109 contains an exhaust fan 102 for exhausting air. The heating housing 101 has an air inlet 1012 and an exhaust outlet 1011. The air inlet 1012 is connected to the air distribution chamber 106, and the exhaust outlet 1011 is connected to the exhaust chamber 109. The heating housing 101 also has an air distribution pipe 105 connected to the air distribution chamber 106 and the mixing chamber 107.

[0032] Furthermore, cold air is drawn into the air distribution chamber 106 through the circulating fan 103. At this time, part of the air enters the mixing chamber 107 through the air distribution pipe 105, and the other part enters the heating chamber 104 for heating through the air distribution valve mechanism 108. The air volume entering the heating chamber 104 is regulated under the action of the air distribution valve mechanism 108. Then, the cold air and hot air are mixed in the mixing chamber 107. Under the action of the air distribution valve mechanism 108, the temperature of the mixed air meets the requirements for electrode drying.

[0033] The air distribution valve mechanism 108 includes a plurality of air distribution plates 1083 rotatably disposed between the air distribution chamber 106 and the heating chamber 104 and a motor assembly 1081 for driving the air distribution plates 1083 to rotate. A connecting rod 1084 for driving the air distribution plates 1083 to rotate is provided between adjacent air distribution plates 1083. A rotating shaft 1082 for connecting the motor assembly 1081 and the air distribution plates 1083 is provided between the motor assembly 1081 and the air distribution plates 1083.

[0034] Several air distribution vanes 1083 are vertically arranged, and gaps are formed between adjacent air distribution vanes 1083. The air distribution vanes 1083 are rotated by the motor unit 1081, thereby adjusting the size of the gaps and thus regulating the air volume entering the heating chamber 104.

[0035] The baking assembly 2 includes a baking shell 201 mounted on a frame 3, a wind box 205 and a reciprocating motion mechanism 202 mounted in the baking shell 201; the baking shell 201 has a hot air inlet 2011 and a hot air outlet 2012 connected to the heating shell 101, the hot air inlet 2011 is connected to the mixing chamber 107, and the hot air outlet 2012 is connected to the exhaust chamber 109.

[0036] The mixed hot air enters the air box 205 in the baking shell 201 through the hot air inlet 2011, and the dried air enters the exhaust chamber 109 through the hot air outlet 2012 and is discharged through the exhaust port 1011.

[0037] The bellows 205 contains an upper air chamber 2051 and a lower air chamber 2052. The lower air chamber 2052 is equipped with a ventilation pipe 2053 that communicates with the upper air chamber 2051. The lower air chamber 2052 is also equipped with a uniform air distribution plate 2054 for evenly blowing out hot air. Several air nozzles 203 are connected to the bottom of the bellows 205 and are also connected to the lower air chamber 2052. Furthermore, when hot air enters the lower air chamber 2052, the generated water vapor enters the upper air chamber 2051 through the ventilation pipe 2053, thereby avoiding the water vapor from affecting the drying of the electrode. The uniform air distribution plate 2054 is evenly distributed in the lower air chamber 2052, and the hot air blown out from the lower air chamber 2052 can be evenly applied to the electrode.

[0038] The reciprocating motion mechanism 202 includes a guide rail 2025 and a chain 2024 arranged along the length of the guide rail 2025. The guide rail 2025 is provided with a heating plate 2026 and a tray 2027 for placing electrode sheets. The chain 2024 synchronously drives the heating plate 2026 and the tray 2027 to move. The end of the chain 2024 is provided with a gear shaft 2023 for driving the chain 2024 to drive the transmission. The baking shell 201 is provided with a motor 2021 and a coupling 2022 for driving the gear shaft 2023 to rotate.

[0039] The guide rail 2025 is set along the length of the air box 205 and is located directly below the air box 205. The electrode is placed on the tray 2027. The gear shaft 2023 is driven to rotate by the motor 2021 and the coupling 2022, which in turn drives the chain 2024 to move the heating plate 2026 and the tray 2027, ensuring that the electrode is heated evenly during the drying process.

[0040] A clamp 4 is provided between the heating housing 101 and the baking housing 201 for connecting the heating housing 101 and the baking housing 201. The clamp 4 includes a first mounting base 401 provided on the heating housing 101 and a second mounting base 402 provided on the baking housing 201. A handle 403 is rotatably provided on the second mounting base 402, and a fixing member 404 is provided on the handle 403 to engage with the first mounting base 401.

[0041] When operating independently with hot air drying, the coated electrode sheet needs to be fixed to the electrode sheet fixing plate before hot air drying. The electrode sheet fixing plate is placed on the tray 2027 above the guide rail 2025 for fixation. At the start of operation, the heating component 1 heats the ambient air. The working principle is that the circulating fan 103 acts as a blower element, drawing in fresh air (generally cold air) from the air inlet 1012 and into the air distribution chamber 106. Within the air distribution chamber 106, the fresh air is divided by the air distribution valve mechanism 108. A portion of the fresh air enters the mixing chamber 107 along the air distribution pipe 105; this portion remains cold air. The other portion of the fresh air enters the heating chamber 104 through the air distribution valve mechanism 108. The air is heated by the heater 1041 and then enters the mixing chamber 107. The cold air and hot air converge and mix in the mixing chamber 107 to reach the set target temperature. Finally, the air is discharged through the hot air inlet 2011 and enters the air box 205 of the baking assembly 2. Then it enters the lower air chamber 2052. After entering the lower air chamber 2052, the hot air enters the air nozzle 203 below the air box 205 through the air distribution plate 2054. The air reaches the surface of the drying electrode through the air nozzle 203. The air distribution plate 2054 improves the uniformity of the air outlet, so that the surface of the electrode is evenly exposed to air and the drying efficiency is improved. At the same time, the reciprocating motion mechanism 202 drives the electrode to reciprocate in the baking assembly 2, so that the electrode is heated evenly. The water vapor generated during drying enters the upper air chamber 2051 of the air box 205 through the ventilation pipe 2053 in the lower air chamber 2052; the upper air chamber 2051 is connected to the hot air outlet 2012 of the baking component 2, and the water vapor is discharged through the exhaust fan 102, thus completing the cycle.

[0042] The working principle of the air distribution valve mechanism 108 is as follows: the motor unit 1081 drives the rotating shaft 1082 to rotate, which in turn drives the air distribution vane 1083 to rotate. By controlling the precise rotation angle of the motor unit 1081, the opening and closing angle of the air distribution vane 1083 is controlled, thereby precisely adjusting the mixing ratio of hot air and cold air in the mixing chamber 107. The baking assembly 2 contains a temperature sensor for measuring the hot air. The temperature sensor is connected to a PLC controller, which in turn controls the rotation angle of the motor unit 1081. Through a PID closed-loop control algorithm, the temperature of the hot air ultimately used to heat the electrode plates in the oven can be adjusted in real time, with a temperature control accuracy of 0.1℃. Precise temperature control can be achieved during the experiment as needed.

[0043] In standalone infrared drying operation, the infrared lamp 204 operates independently. Before the infrared drying experiment, the coated electrode sheet needs to be fixed on the electrode sheet fixing plate. The electrode sheet fixing plate is placed in the tray 2027 above the guide rail 2025 and fixed. When the operation starts, the reciprocating motion mechanism 202 drives the tray 2027 to move back and forth at a uniform speed in the baking assembly 2 to ensure the uniform heating of the electrode sheet. The infrared radiation wavelength control accuracy can reach 0.1µm.

[0044] When infrared and hot air work together, the electrode sheets can be heated quickly, the drying process is controllable, and it has extremely high heat transfer efficiency, low thermal inertia, and better drying quality. During the drying process, the heating component 1 first sends hot air at the set temperature into the air box 205, and then the air at the set temperature is evenly diffused onto the surface of the electrode sheets from the air nozzle 203 below the air box 205. The infrared lamp tube 204 provides infrared heat radiation. The water vapor generated during the process enters the upper air chamber 2051 of the air box 205 through the ventilation pipe 2053 in the air box 205, and then the water vapor is discharged by the exhaust fan 102, completing the internal circulation operation.

[0045] The structure employs an alternating infrared and hot air heating design. When infrared radiation is the primary method, supplemented by hot air, a thin film of solvent gas forms on the electrode surface during drying. This film inhibits the evaporation of the internal solvent and affects the penetration efficiency of infrared radiation. The supplementary hot air convection drying not only disperses the surface film but also evenly distributes heat throughout the electrode, promptly removing high-concentration water vapor and replenishing with fresh, dry hot air. This significantly improves solvent evaporation and removal rates, reduces mass transfer resistance, and enhances the drying quality of the electrode. Conversely, when hot air heating is the primary method, supplemented by infrared radiation, the time required for the electrode to reach the set temperature during baking affects drying efficiency. The addition of infrared radiation reduces this time, improving drying efficiency. Furthermore, infrared radiation evaporates the water vapor generated during hot air drying, preventing condensation on the electrode surface and ensuring optimal drying quality.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention; therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0047] Although this article makes extensive use of the reference numerals in the figures: heating component 1, heating shell 101, exhaust port 1011, air inlet 1012, exhaust fan 102, circulating fan 103, heating chamber 104, heater 1041, air distribution duct 105, air distribution chamber 106, mixing chamber 107, air distribution valve mechanism 108, motor unit 1081, rotating shaft 1082, air distribution plate 1083, connecting rod 1084, exhaust chamber 109, baking component 2, baking shell 201, hot air inlet 2011, hot air outlet 2012, reciprocating motion The terms used include 202 (moving mechanism), 2021 (motor), 2022 (coupling), 2023 (gear shaft), 2024 (chain), 2025 (guide rail), 2026 (heating plate), 2027 (tray), 203 (nozzle), 204 (infrared lamp), 205 (air box), 2051 (upper air chamber), 2052 (lower air chamber), 2053 (ventilation duct), 2054 (air distribution plate), 3 (frame), 301 (foot cup), 302 (angle iron), 4 (clamp), 401 (first mounting base), 402 (second mounting base), 403 (handle), and 404 (fixture), etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. An infrared hot air mixing and drying device, comprising a frame (3), characterized in that, The frame (3) is provided with a heating component (1) and a baking component (2) connected together. The heating component (1) is provided with a heating chamber (104) for providing hot air to the baking component (2). The baking component (2) includes a bellows (205) connected to the heating component (1) and a reciprocating motion mechanism (202) arranged opposite to the bellows (205). The bellows (205) has a plurality of air nozzles (203) arranged facing the reciprocating motion mechanism (202). The reciprocating motion mechanism (202) is movably connected to the baking component (2) along the arrangement direction of the plurality of air nozzles (203). The baking component (2) is also provided with an infrared lamp (204) used in conjunction with the heating component (1). The infrared lamp (204) is arranged corresponding to the reciprocating motion mechanism (202). (1) Includes a heating housing (101) mounted on a frame (3). The heating housing (101) is provided with an air distribution chamber (106) and a mixing chamber (107) connected to opposite sides of the heating chamber (104). An air distribution valve mechanism (108) is provided between the air distribution chamber (106) and the heating chamber (104). The heating chamber (104) is provided with a heater (1041) for heating cold air. The air distribution chamber (106) is provided with a circulating fan (103) for drawing in cold air. The air box (205) is formed with an upper air chamber (2051) and a lower air chamber (2052). The lower air chamber (2052) is provided with a ventilation pipe (2053) connected to the upper air chamber (2051). The lower air chamber (2052) is also provided with a uniform air distribution plate (2054) for blowing hot air evenly.

2. The infrared hot air mixing and drying device according to claim 1, characterized in that, The heating shell (101) is also provided with an exhaust chamber (109) connected to the baking component (2). The exhaust chamber (109) is provided with an exhaust fan (102) for exhausting air. The heating shell (101) is provided with an air inlet (1012) and an air outlet (1011). The air inlet (1012) is connected to the air distribution chamber (106), and the air outlet (1011) is connected to the exhaust chamber (109). The heating shell (101) is also provided with an air distribution pipe (105) connected to the air distribution chamber (106) and the mixing chamber (107).

3. The infrared hot air mixing and drying device according to claim 1, characterized in that, The air distribution valve mechanism (108) includes a plurality of air distribution plates (1083) rotatably disposed between the air distribution chamber (106) and the heating chamber (104) and a motor unit (1081) for driving the air distribution plates (1083) to rotate. A connecting rod (1084) for driving the air distribution plates (1083) to move together is provided between adjacent air distribution plates (1083). A rotating shaft (1082) for connecting the motor unit (1081) and the air distribution plates (1083) is provided between the motor unit (1081) and the air distribution plates (1083).

4. The infrared hot air mixing and drying device according to claim 2, characterized in that, The baking assembly (2) includes a baking shell (201) disposed on a frame (3), and a bellows (205) and a reciprocating motion mechanism (202) disposed in the baking shell (201).

5. The infrared hot air mixing and drying device according to claim 4, characterized in that, The baking shell (201) has a hot air inlet (2011) and a hot air outlet (2012) connected to the heating shell (101). The hot air inlet (2011) is connected to the mixing chamber (107), and the hot air outlet (2012) is connected to the exhaust chamber (109).

6. The infrared hot air mixing and drying device according to claim 1, characterized in that, Several of the aforementioned nozzles (203) are connected to the bottom of the bellows (205), and several of the nozzles (203) are connected to the lower air chamber (2052).

7. The infrared hot air mixing and drying device according to claim 4, characterized in that, The reciprocating motion mechanism (202) includes a guide rail (2025) and a chain (2024) arranged along the length of the guide rail (2025). The guide rail (2025) is provided with a heating plate (2026) and a tray (2027) for placing electrode sheets. The chain (2024) synchronously drives the heating plate (2026) and the tray (2027) to move. The end of the chain (2024) is provided with a gear shaft (2023) for driving the chain (2024) to drive the transmission. The baking shell (201) is provided with a motor (2021) and a coupling (2022) for driving the gear shaft (2023) to rotate.

8. The infrared hot air mixing and drying device according to claim 4, characterized in that, A clamp (4) for connecting the heating shell (101) and the baking shell (201) is provided between the heating shell (101) and the baking shell (201). The clamp (4) includes a first mounting seat (401) provided on the heating shell (101) and a second mounting seat (402) provided on the baking shell (201). A handle (403) is rotatably provided on the second mounting seat (402), and a fixing member (404) is provided on the handle (403) to engage with the first mounting seat (401).

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