A segmented hot air drying flow guide device for sodium ion battery pole piece production

Abstract

The application relates to the technical field of battery pole piece production, in particular to a segmented hot air drying flow guide device for sodium ion battery pole piece production, which comprises a drying system and a hot air supply system which are connected in cooperation, the drying system comprises a pre-drying mechanism, a main drying mechanism and an auxiliary drying mechanism, a carrier plate guide rail is arranged between two drying boxes, a plurality of pole piece carrier plates are slidably arranged on the carrier plate guide rail, the pole piece carrier plate comprises a detachably connected upper carrier plate and a lower carrier plate, a lower carrier plate guide block is arranged on the two sides of the lower carrier plate, and the lower carrier plate guide block is slidably arranged on the carrier plate guide rail. The upper carrier plate and the lower carrier plate can be disassembled, the upper fixed through groove and the lower fixed through groove of the double-sided symmetrical pole piece are fixed, the structure realizes lossless, self-positioning and double-sided suspension drying of the battery pole piece during movement, and provides a transmission carrier with high consistency and low breakage rate for subsequent segmented hot air drying.

Description

Technical Field

[0001] This invention relates to a drying and guiding device, and more particularly to a segmented hot air drying and guiding device for sodium-ion battery electrode production, belonging to the field of battery electrode production technology. Background Technology

[0002] Sodium-ion battery electrodes need to undergo processes such as coating and drying during production to remove organic solvents or moisture from the electrode slurry, thereby ensuring the electrochemical performance and structural stability of the electrode.

[0003] Currently, traditional electrode drying equipment mostly adopts single-stage hot air drying or infrared heating methods. The electrode is heated on one side on the conveyor belt or guide roller, which easily produces a temperature difference between the front and back sides, resulting in inconsistent coating drying speed, which in turn leads to quality problems such as edge curling, warping, cracking, and even the shedding of active materials.

[0004] Meanwhile, existing drying devices mostly use open or semi-open hot air circulation systems, which result in high heat loss, low energy efficiency, and difficulty in achieving precise step temperature control, failing to meet the stringent requirements of sodium-ion battery electrodes for temperature rise profiles. Furthermore, electrode transfer often relies on grippers or positioning pins for fixation, leading to low loading efficiency and potential damage to the coating surface.

[0005] Therefore, there is an urgent need to develop a drying and guiding device that can achieve uniform heating on both sides of the electrode, precise temperature control in segments, high efficiency and energy saving, and convenient electrode loading, so as to improve the production yield of sodium-ion battery electrodes and the overall efficiency of the equipment. Summary of the Invention

[0006] The purpose of this invention is to provide a segmented hot air drying and guiding device for sodium-ion battery electrode production. Through a detachable upper and lower plate, plus a double-sided symmetrical electrode upper fixing groove and electrode lower fixing groove, this structure realizes non-destructive, self-positioning, and double-sided suspended drying of battery electrodes during the movement process, providing a highly consistent and low-damage transmission carrier for subsequent segmented hot air drying.

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] A segmented hot air drying and guiding device for sodium-ion battery electrode production includes a drying system and a hot air supply system connected in conjunction. The drying system includes a pre-drying mechanism, a main drying mechanism, and a secondary drying mechanism. Each of the pre-drying mechanism, the main drying mechanism, and the secondary drying mechanism includes drying chambers distributed vertically.

[0009] A carrier plate guide rail is provided between the two drying chambers. Multiple electrode plate carriers are slidably arranged on the carrier plate guide rail. Each electrode plate carrier includes an upper carrier plate and a lower carrier plate that are detachably connected. Both the upper carrier plate and the lower carrier plate are provided with a carrier plate placement area and a carrier plate fixing area. The lower side of the upper carrier plate has an electrode plate fixing groove on the carrier plate placement area that corresponds to the drying chamber. The upper side of the lower carrier plate has an electrode plate fixing groove on the carrier plate placement area that corresponds to the electrode plate fixing groove. Battery electrodes are arranged inside the electrode plate fixing groove and the electrode plate fixing groove.

[0010] Both sides of the download plate are connected to download plate guide blocks, which are slidably mounted on the carrier plate guide rail.

[0011] Preferably, the upper side of the download board has a loading plate groove, and the loading plate is disposed inside the download board;

[0012] An upper magnet is fixedly disposed inside the carrier plate fixing area of ​​the upper carrier plate, and a lower magnet is fixedly disposed inside the carrier plate fixing area of ​​the lower carrier plate. The magnetic poles of the upper magnet and the lower magnet are opposite on the side closest to each other.

[0013] Preferably, a carrier plate through groove is provided between the two drying boxes distributed vertically. After the two drying boxes are closed, the carrier plate guide rail is set inside the carrier plate through groove.

[0014] Preferably, the upper side of the drying box described above and the lower side of the drying box described below are both connected to synchronous telescopic rods, which are used to drive the drying box upwards or downwards.

[0015] Preferably, the hot air supply system includes an air pump, a first gas heater and a hot drying air storage box disposed at the output end of the air pump, wherein the hot drying air storage box is disposed inside the drying box;

[0016] The hot drying air storage box is equipped with multiple hot drying air nozzles, and the hot drying air nozzles are connected to the interior of the first gas heater through the first air supply pipe.

[0017] The hot drying nozzle corresponds to the battery electrode on the carrier plate placement area.

[0018] Preferably, a second gas heater is connected between the pre-drying mechanism and the main drying mechanism, and a third gas heater is connected between the main drying mechanism and the auxiliary drying mechanism.

[0019] Preferably, the drying chamber on the pre-drying mechanism is connected to the second gas heater through a first gas collecting pipe, and the second gas heater is connected to the interior of the main drying mechanism through a second air supply pipe;

[0020] The drying chamber on the main drying mechanism is connected to the third gas heater via the second gas collection pipe, and the third gas heater is connected to the interior of the auxiliary drying mechanism via the third air supply pipe.

[0021] Preferably, the drying chamber of the auxiliary drying mechanism is connected to a third air collection pipe, which is connected to the input end of the air pump.

[0022] Preferably, a processing support frame is fixedly connected to the synchronous telescopic rod, a guide rail support foot is fixedly connected to the carrier plate guide rail, the guide rail support foot is fixedly mounted on the processing support frame, and the air pump is fixedly mounted on the processing support frame through an air pump fixing plate.

[0023] Preferably, a temperature sensor is fixedly installed on the drying oven.

[0024] The present invention has at least the following beneficial effects:

[0025] 1. The battery electrode is embedded in the upper and lower fixing slots, which can expose both sides simultaneously, achieving uniform heating on both sides and avoiding edge curling or deformation. This avoids the "temperature difference between the heated and shielded surfaces" problem caused by traditional single-sided drying or surface-mounted transfer. It ensures that the solvent in the electrode coating can evaporate from both sides simultaneously and at the same speed. The periphery of the battery electrode is pressed tightly, which greatly reduces the risk of edge curling, warping, or coating cracking caused by inconsistent drying speed. Through the detachable upper and lower plates and the double-sided symmetrical upper and lower fixing slots, this structure realizes non-destructive, self-positioning, and double-sided suspended drying of the battery electrode during the movement process, providing a highly consistent and low-damage transfer carrier for subsequent segmented hot air drying.

[0026] 2. Therefore, by using a recessed positioning groove and an embedded magnet, the upper or lower plate can be quickly self-locked, precisely aligned, and fixed without contamination. This improves the efficiency of battery electrode loading and unloading while avoiding the problems of impurity contamination or positioning deviation that may be caused by traditional mechanical clamps.

[0027] 3. The airflow path is: air pump → first gas heater → pre-drying mechanism → second gas heater → main drying mechanism → third gas heater → auxiliary drying mechanism → return air pump. The main drying requires the highest temperature, so it is arranged in the middle and upper reaches of the hot air path. At this time, the gas temperature is still high. Pre-drying requires gentle heating to prevent cracking. Auxiliary drying only needs to keep warm. The cooled gas can meet the requirements. Compared with three independent heating + independent exhaust systems, this design can reduce the total installed power. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a cross-sectional view of the present invention;

[0031] Figure 3 This is a structural diagram of the electrode sheet carrier plate of the present invention;

[0032] Figure 4 for Figure 2 Enlarged view of A in the middle;

[0033] Figure 5 This is a structural diagram of the air pump of the present invention;

[0034] Figure 6 This is a structural diagram of the hot air supply system of the present invention;

[0035] Figure 7 This is a structural diagram of the electrode sheet carrier plate distribution of the present invention;

[0036] Figure 8 This is a structural diagram of the carrier plate guide rail of the present invention.

[0037] In the diagram, 1. Drying system; 101. Pre-drying mechanism; 102. Main drying mechanism; 103. Auxiliary drying mechanism; 2. Hot air supply system; 201. Air pump; 202. First gas heater; 203. Second gas heater; 204. Third gas heater; 205. First air supply pipe; 2051. Second air supply pipe; 2052. Third air supply pipe; 206. First gas collection pipe; 2061. Second gas collection pipe; 207. Third gas collection pipe; 208. Hot drying air storage box; 209. Hot drying nozzle; 210. Air pump 4. Mounting plate; 5. Carrier plate guide rail; 6. Guide rail support foot; 7. Electrode plate carrier plate; 8. Upper carrier plate; 9. Upper electrode plate fixing slot; 10. Upper magnet plate; 11. Lowering plate; 12. Upper carrier plate slot; 13. Lower electrode plate fixing slot; 14. Lower magnet plate; 15. Lowering plate guide block; 16. Carrier plate placement area; 17. Carrier plate fixing area; 18. Drying oven; 19. Synchronous telescopic rod; 10. Carrier plate slot; 11. Temperature sensor; 20. Battery electrode plate; 21. Processing support frame. Detailed Implementation

[0038] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0039] like Figures 1-8 As shown, the segmented hot air drying and guiding device for sodium-ion battery electrode production provided in this embodiment includes a drying system 1 and a hot air supply system 2 connected in conjunction. The drying system 1 includes a pre-drying mechanism 101, a main drying mechanism 102, and a secondary drying mechanism 103. The pre-drying mechanism 101, the main drying mechanism 102, and the secondary drying mechanism 103 all include drying chambers 6 distributed vertically, allowing for segmented drying and process control. The pre-drying mechanism 101 performs pre-drying to prevent cracking, the main drying mechanism 102 can efficiently remove solvents, and the secondary drying mechanism 103 can thoroughly dry and keep warm. Through the three-stage design, the heating curve can be precisely controlled to avoid the electrode from cracking or the active material from falling off due to rapid heating.

[0040] A carrier plate guide rail 4 is provided between the two drying chambers 6. Multiple electrode sheet carrier plates 5 are slidably mounted on the carrier plate guide rail 4. The electrode sheet carrier plate 5 includes an upper carrier plate 501 and a lower carrier plate 502 that are detachably connected. First, all the battery electrode sheets 7 are laid flat and placed into the multiple electrode sheet fixing slots 5022 of the lower carrier plate 502. Then, the upper carrier plate 501 is closed and pressed to fix them. This operation is much faster than loading the electrode sheets one by one. Separating the upper carrier plate 501 and the lower carrier plate 502 allows for unobstructed cleaning of each slot, avoiding cross-contamination. Both the upper carrier plate 501 and the lower carrier plate 502 are provided with a carrier plate placement area 503 and a carrier plate fixing area 504. The carrier plate placement area 503 is used to position the battery electrode sheets 7. The carrier plate fixing area 504 is used to install magnets to avoid damaging or scratching the coating. The lower side of the upper carrier plate 501 has an upper electrode fixing groove 5012 corresponding to the drying oven 6 on the carrier plate placement area 503. The upper side of the lower plate 502 has a lower electrode fixing groove 5022 corresponding to the upper electrode fixing groove 5012 on the carrier plate placement area 503. Battery electrodes 7 are disposed inside the upper electrode fixing groove 5012 and the lower electrode fixing groove 5022. The battery electrodes 7 are clamped between the upper electrode fixing groove 5012 and the lower electrode fixing groove 5022, so that both sides of the electrodes are exposed to the hot air flow, rather than being attached to any solid surface.

[0041] The battery electrode 7 is embedded in the fixing groove 5012 on the electrode and the fixing groove 5022 on the bottom of the electrode, which can expose both the front and back sides at the same time, achieving uniform heating on both sides, avoiding edge curling or deformation, and avoiding the "temperature difference between the heated surface and the shielded surface" problem caused by traditional single-sided drying or surface transfer. It ensures that the solvent in the electrode coating can evaporate from both the front and back sides at the same speed. The periphery of the battery electrode 7 is pressed tightly, which greatly reduces the risk of edge curling, warping or coating cracking caused by inconsistent drying speed.

[0042] Meanwhile, the dimensions of the upper fixing groove 5012 and the lower fixing groove 5022 of the electrode sheet are precisely matched with the shape of the battery electrode sheet 7. After the battery electrode sheet 7 is placed in, it is naturally confined in the groove without the need for additional clamps or positioning pins. This ensures that each battery electrode sheet 7 is located in the fixed space of the electrode sheet carrier plate 5, so that the position repeatability is extremely high when it is aligned with the air nozzles of the upper and lower drying chambers. It also prevents the battery electrode sheet 7 from moving laterally or flying out when the electrode sheet carrier plate 5 slides or is impacted by airflow, thus reducing damage.

[0043] Therefore, by using the detachable upper plate 501 and lower plate 502, plus the double-sided symmetrical electrode upper fixing groove 5012 and electrode lower fixing groove 5022, this structure achieves non-destructive, self-positioning, and double-sided suspended drying of the battery electrode 7 during the movement process, providing a highly consistent and low-damage transmission carrier for subsequent segmented hot air drying.

[0044] Both sides of the download plate 502 are connected to download plate guide blocks 5024. The download plate guide blocks 5024 are slidably set on the carrier plate guide rail 4, which can realize step or continuous conveying. When the previous electrode plate carrier plate 5 is in the pre-drying section, the next electrode plate carrier plate 5 is being loaded, and the next electrode plate carrier plate 5 has entered the main drying section. It supports the time difference coordination of segmented drying and improves the overall efficiency of the equipment.

[0045] Furthermore, such as Figure 3 and Figure 4 As shown, the upper side of the download plate 502 is provided with an upper loading plate groove 5021, and the upper loading plate 501 is disposed inside the download plate 502. The side wall of the upper loading plate groove 5021 can completely constrain the movement of the upper loading plate 501 in the X / Y direction. Even if subjected to equipment vibration or airflow impact, the upper loading plate 501 and the download plate 502 will not slip relative to each other, avoiding misalignment and squeezing of the electrode sheet. This eliminates the need for the traditional positioning pin hole structure, simplifies processing, and prevents positioning failure due to pin wear.

[0046] An upper magnet 5013 is fixedly installed inside the carrier plate fixing area 504 of the upper carrier plate 501, and a lower magnet 5023 is fixedly installed inside the carrier plate fixing area 504 of the lower carrier plate 502. The magnets are completely enclosed inside the carrier plate, and magnetic powder will not fall off due to friction, thus avoiding contamination of the battery electrode 7. The magnetic poles of the upper magnet 5013 and the lower magnet 5023 are opposite on the side closest to each other. As long as the upper carrier plate 501 is roughly placed in the upper carrier plate slot 5021, the magnetic attraction will naturally pull it to a completely fitted position, without the need for precise alignment, reducing the difficulty of manual electrode assembly. The magnetic force does not decay over time and can still maintain the same clamping force after long-term use, preventing the electrode from shifting due to fluctuations in clamping force. If an accident occurs, such as a jamming plate causing excessive force on the upper carrier plate 501 or the lower carrier plate 502, the magnetic connection will directly detach rather than damage the upper carrier plate 501 or the lower carrier plate 502, protecting the equipment and the electrode.

[0047] Therefore, by using a recessed positioning groove and an embedded magnet, the upper plate 501 or the lower plate 502 can be quickly self-locked, precisely aligned, and fixed without contamination. This improves the loading and unloading efficiency of the battery electrode 7 while avoiding the problems of impurity contamination or positioning deviation that may be caused by traditional mechanical clamps.

[0048] Furthermore, such as Figure 2 As shown, a carrier plate through groove 602 is provided between the two drying boxes 6 distributed vertically. After the two drying boxes 6 are closed, the carrier plate guide rail 4 is set inside the carrier plate through groove 602. After closing, the carrier plate guide rail 4 is exactly located in the groove. The carrier plate guide rail 4 and the carrier plate through groove 602 form a small gap fit. Hot air can only enter and exit from the nozzles on both sides of the battery electrode 7 and will not escape in large quantities from the gap of the guide rail. Compared with the traditional "semi-open through" drying box, the thermal efficiency can be improved by more than 30%. The well sealed cavity makes it easier for the internal hot airflow to form a stable circulation, avoiding the uneven drying of the edge and center of the battery electrode 7 due to the infiltration of cold air.

[0049] Both the upper side of the upper drying box 6 and the lower side of the lower drying box 6 are connected to synchronous telescopic rods 601. The synchronous telescopic rods 601 are used to drive the drying box 6 upward or downward. When production starts, the drying box 6 is first lifted, all electrode plate carriers 5 are pushed in along the guide rail 4, and then the box is closed. There is no need to insert the electrode plate carriers 5 one by one from the end of the drying box 6.

[0050] Furthermore, such as Figure 5 and Figure 6 As shown, the hot air supply system 2 includes an air pump 201, a first gas heater 202 and a hot drying air storage box 208 disposed at the output end of the air pump 201. The hot drying air storage box 208 is disposed inside the drying chamber 6. Multiple hot drying nozzles 209 are disposed on the hot drying air storage box 208. The hot drying nozzles 209 are connected to the interior of the first gas heater 202 through the first air supply pipe 205. The hot drying nozzles 209 correspond to the battery electrode 7 on the carrier plate placement area 503. Hot air first enters the hot drying air storage box 208 inside the drying chamber 6, and then is ejected through the multiple hot drying nozzles 209. The hot drying nozzles 209 are directly facing the carrier plate placement area 503. The hot drying air storage box 208 plays a role in stabilizing the pressure, eliminating the pulsation of the air pump 201 or the difference in pipe resistance, so that the wind speed and air volume of each hot drying nozzle 209 are consistent. The multi-point jet spray covers the surface of multiple battery electrode 7, improving the drying efficiency.

[0051] A second gas heater 203 is connected between the pre-drying mechanism 101 and the main drying mechanism 102. The drying box 6 on the pre-drying mechanism 101 is connected to the second gas heater 203 through the first gas collecting pipe 206. The second gas heater 203 is connected to the interior of the main drying mechanism 102 through the second air supply pipe 2051. A third gas heater 204 is connected between the main drying mechanism 102 and the auxiliary drying mechanism 103. The drying box 6 on the main drying mechanism 102 is connected to the third gas heater 204 through the second gas collecting pipe 2061. The third gas heater 204 is connected to the interior of the auxiliary drying mechanism 103 through the third air supply pipe 2052. Even if the temperature of the gas coming from upstream decreases, the interstage heater can reheat it to the required temperature. For example: pre-drying 80°C → reheating to 120°C to enter the main drying → reheating to 100°C to enter the auxiliary drying.

[0052] The drying chamber 6 of the auxiliary drying mechanism 103 is connected to a third gas collection pipe 207, which is connected to the input end of the air pump 201. The third gas collection pipe 207 of the auxiliary drying mechanism 103 is directly connected to the input end of the return air pump 201, forming a complete closed loop. The gas discharged from the final stage still contains a large amount of residual heat, usually 60-90℃, which is directly drawn back and reused. Compared with direct discharge drying, it can save 40%-60% of energy. The closed-loop system only needs a small amount of fresh air to be added, and the amount of waste gas treated is small, which is environmentally friendly.

[0053] The airflow path is: air pump 201 → first gas heater 202 → pre-drying mechanism 101 → second gas heater 203 → main drying mechanism 102 → third gas heater 204 → auxiliary drying mechanism 103 → return air pump 201;

[0054] The main drying requires the highest temperature, so it is placed in the middle and upper part of the hot air path. At this time, the gas temperature is still high. Pre-drying requires gentle heating to prevent cracking, while the secondary drying only needs to be kept warm. The cooled gas can meet the requirements. Compared with three independent heating + independent exhaust systems, this design can reduce the total installed power.

[0055] Finally, as Figure 1 As shown, a processing support frame 8 is fixedly connected to the synchronous telescopic rod 601 to prevent the drying chamber 6 from shifting from the carrier plate guide rail 4 due to uneven ground or equipment vibration, ensuring that the hot drying nozzle 209 is always aligned with the carrier plate placement area 503 after closing. A guide rail support foot 401 is fixedly connected to the carrier plate guide rail 4, and the guide rail support foot 401 is fixedly mounted on the processing support frame 8 to improve the stability of the carrier plate guide rail 4. Figure 5 As shown, the air pump 201 is fixedly mounted on the processing support frame 8 by the air pump fixing plate 210. The air pump 201 itself has working vibration. After being rigidly connected to the processing support frame 8, it can be uniformly isolated by the vibration damping pad of the processing support frame 8 to prevent the vibration from being transmitted to the external pipeline.

[0056] In this embodiment, as Figure 2 As shown, a temperature sensor 603 is fixedly installed on the drying oven 6. The sensor provides real-time feedback on the internal temperature of each drying oven 6. When the temperature exceeds the allowable range, the system can immediately alarm or stop the machine to prevent a large number of electrode sheets from being scrapped.

[0057] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0058] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0059] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A segmented hot air drying and guiding device for sodium-ion battery electrode production, comprising a drying system (1) and a hot air supply system (2) connected in conjunction, characterized in that, The drying system (1) includes a pre-drying mechanism (101), a main drying mechanism (102) and a secondary drying mechanism (103). The pre-drying mechanism (101), the main drying mechanism (102) and the secondary drying mechanism (103) all include drying boxes (6) distributed vertically. A carrier plate guide rail (4) is provided between the two drying boxes (6). Multiple electrode plate carriers (5) are slidably arranged on the carrier plate guide rail (4). Each electrode plate carrier (5) includes an upper carrier plate (501) and a lower carrier plate (502) that are detachably connected. Both the upper carrier plate (501) and the lower carrier plate (502) are provided with a carrier plate placement area (503) and a carrier plate fixing area (504). The lower side of the upper carrier plate (501) is provided with an electrode upper fixing groove (5012) corresponding to the drying box (6) on the carrier plate placement area (503). The upper side of the lower carrier plate (502) is provided with an electrode lower fixing groove (5022) corresponding to the electrode upper fixing groove (5012) on the carrier plate placement area (503). Battery electrodes (7) are arranged inside the electrode upper fixing groove (5012) and the electrode lower fixing groove (5022). Both sides of the download plate (502) are connected to download plate guide blocks (5024), and the download plate guide blocks (5024) are slidably disposed on the carrier plate guide rail (4).

2. The segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 1, characterized in that: The upper side of the download board (502) is provided with a loading plate groove (5021), and the loading plate (501) is disposed inside the download board (502); An upper magnet (5013) is fixedly disposed inside the carrier fixing area (504) of the upper carrier plate (501), and a lower magnet (5023) is fixedly disposed inside the carrier fixing area (504) of the lower carrier plate (502). The magnetic poles of the upper magnet (5013) and the lower magnet (5023) are opposite on the side closest to each other.

3. The segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 1, characterized in that: A carrier plate through groove (602) is provided between the two drying boxes (6) distributed vertically. After the two drying boxes (6) are closed, the carrier plate guide rail (4) is set inside the carrier plate through groove (602).

4. The segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 1, characterized in that: The upper side of the drying box (6) above and the lower side of the drying box (6) below are both connected to a synchronous telescopic rod (601), which is used to drive the drying box (6) upward or downward.

5. A segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 4, characterized in that: The hot air supply system (2) includes an air pump (201), a first gas heater (202) and a hot drying air storage box (208) disposed at the output end of the air pump (201), wherein the hot drying air storage box (208) is disposed inside the drying box (6); The hot drying air storage box (208) is provided with a plurality of hot drying air nozzles (209), and the hot drying air nozzles (209) are connected to the interior of the first gas heater (202) through the first air supply pipe (205); The hot drying nozzle (209) corresponds to the battery electrode (7) on the carrier plate placement area (503).

6. The segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 5, characterized in that: A second gas heater (203) is connected between the pre-drying mechanism (101) and the main drying mechanism (102), and a third gas heater (204) is connected between the main drying mechanism (102) and the auxiliary drying mechanism (103).

7. A segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 6, characterized in that: The drying box (6) on the pre-drying mechanism (101) is connected to the second gas heater (203) through the first gas collecting pipe (206), and the second gas heater (203) is connected to the interior of the main drying mechanism (102) through the second air supply pipe (2051); The drying chamber (6) on the main drying mechanism (102) is connected to the third gas heater (204) through the second gas collection pipe (2061), and the third gas heater (204) is connected to the interior of the auxiliary drying mechanism (103) through the third air supply pipe (2052).

8. A segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 7, characterized in that: The auxiliary drying mechanism (103) has a third air collection pipe (207) connected to the drying box (6), and the third air collection pipe (207) is connected to the input end of the air pump (201).

9. A segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 5, characterized in that: A processing support frame (8) is fixedly connected to the synchronous telescopic rod (601), and a guide rail support foot (401) is fixedly connected to the carrier plate guide rail (4). The guide rail support foot (401) is fixedly installed on the processing support frame (8), and the air pump (201) is fixedly installed on the processing support frame (8) through the air pump fixing plate (210).

10. A segmented hot air drying and guiding device for sodium-ion battery electrode production according to claim 1, characterized in that: A temperature sensor (603) is fixedly installed on the drying oven (6).

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