A coating electrode drying box and drying method

Abstract

The present application relates to the technical field of pole piece drying equipment, and in particular to a coating pole piece drying box and drying method, wherein the coating pole piece drying box comprises a box body, a transmission device and a hot air drying device are arranged in the box body, and a magnetic drying device is also arranged in the box body, and the magnetic drying device comprises a plurality of magnetic drying groups installed in the box body, and the plurality of magnetic drying groups are laid and extended along the transmission direction of the transmission device, and the magnetic drying group comprises a plurality of magnetic drying units rotatably connected to the box body, and the plurality of magnetic drying units are laid and extended along the transmission direction perpendicular to the transmission device, and the magnetic drying unit comprises a permanent magnet. When the magnetic drying unit approaches the pole piece and rotates, the substrate of the pole piece will cut the magnetic flux lines emitted by the permanent magnet inside the magnetic drying unit, so that a certain current is generated inside the substrate for heating, and the hot air drying device is cooperated to realize the synchronous heating of the inside and outside of the slurry.

Description

Technical Field

[0001] The present application relates to the technical field of electrode drying equipment, and in particular to a coating electrode drying box and a drying method. Background Art

[0002] The preparation process of lithium battery pole pieces includes coating and drying, that is, the prepared slurry is evenly coated on the metal substrate of the pole piece and sent to the oven for drying. Coating and drying are one of the key links in the preparation of lithium battery pole pieces, which directly affects the processing quality of the pole pieces.

[0003] The traditional drying method for lithium battery pole pieces is hot air circulation drying: hot air is quickly passed over the surface of the coating slurry, heating the slurry, causing the solvent on the surface of the slurry to evaporate and diffuse in the form of gas and liquid. However, this method has problems such as low drying efficiency and difficult temperature control. Especially after a large amount of water or NMP solvent evaporates, the viscosity of the coated slurry is very high, making it difficult to further dry the inside of the pole piece. Even if the drying temperature of the hot air is increased, the increase in production rate is very limited; at the same time, if the drying temperature is not properly controlled, it is easy to cause damage to the oven.

[0004] Subsequent improvements include an infrared-hot air coupled drying system: infrared radiation heating is used to assist hot air drying. However, for organic solvents such as NMP, the drying efficiency still needs to be improved because organic solvents usually absorb infrared waves weaker than water. In addition, infrared radiation heating is performed from the surface of the slurry, making the surface drying speed faster than the inside drying speed, which can easily lead to defects such as cracking, orange peel, and hard skin on the material. Summary of the invention

[0005] In order to improve the problem that it is difficult to balance drying efficiency and drying quality in the related art, the present invention provides a coating electrode drying box and a drying method.

[0006] On the one hand, the present application provides a coating pole piece drying box, including a box body, in which a transmission device and a hot air drying device are arranged, and the box body is also provided with a magnetic drying device, the magnetic drying device includes a plurality of magnetic drying groups installed on the box body, and the plurality of magnetic drying groups are laid and extended along the transmission direction of the transmission device. The magnetic drying group includes a plurality of magnetic drying units rotatably connected to the box body, and the plurality of magnetic drying units are laid and extended along the transmission direction perpendicular to the transmission device, and the magnetic drying units include permanent magnets.

[0007] Furthermore, the magnetic drying device also includes a lifting mechanism, which is arranged on the box body, and the plurality of magnetic drying groups are arranged on the lifting mechanism, and the plurality of magnetic drying groups can move toward or away from the pole piece.

[0008] Furthermore, the lifting mechanism is provided with a base, the base has a plurality of guide rails, the guide rails are slidably connected with a reciprocating seat in a one-to-one correspondence, the reciprocating seat is laid and extended along a transmission direction perpendicular to the transmission device, and a plurality of the magnetic drying groups are installed on the reciprocating seat.

[0009] Furthermore, the length of the reciprocating seat is L, the moving stroke of the reciprocating seat is S, and the width of the material is D; L, S and D satisfy: LS>D.

[0010] Furthermore, it also includes a detection device, which includes a horizontal detection mechanism for detecting the degree of upward or downward deflection of the material and a temperature monitoring mechanism for detecting the temperature of the material, and the horizontal detection mechanism and the temperature monitoring mechanism are arranged on the box.

[0011] Furthermore, it also includes a radiation drying device, which includes a plurality of heaters arranged on the box.

[0012] On the other hand, the present application provides a drying method for the above-mentioned coated electrode drying oven, comprising the following steps:

[0013] S1: Send the material coated with slurry into the drying oven;

[0014] S2: Dry the surface of the material and set magnetic flux lines on one side of the material;

[0015] S3: The metal substrate in the material cuts the magnetic flux lines, generating current and reaction force;

[0016] S4: Detect and obtain the level parameters and temperature parameters of the material;

[0017] S5: adjusting the position of the material according to the horizontal parameter;

[0018] S6: Adjust the substrate heating value of the material according to the temperature parameter.

[0019] Furthermore, the S4 specifically includes:

[0020] S4.1: Detect and obtain the feeding level height when the material is fed in and the discharging level height when the material is discharged, and compare them with the preset height range;

[0021] S4.2: Divide the material into N scanning areas along the moving direction of the material, measure the temperature of the N scanning areas and obtain corresponding temperature parameters Nx, and compare the corresponding temperature parameters Nx with the preset temperature range.

[0022] Furthermore, the S5 specifically includes:

[0023] If the feed level or the discharge level is not within the preset height range, the density of the magnetic induction lines is increased or decreased until the feed level or the discharge level is within the preset height range.

[0024] Furthermore, the S6 specifically includes:

[0025] If the temperature parameter Nx of the corresponding scanning area is not within the preset temperature range, the drying power of the corresponding area is increased or decreased until the temperature parameter Nx of the corresponding scanning area is within the preset temperature range.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. A coating pole piece drying box of the present invention is provided with a hot air drying device and a magnetic drying device, and the hot air drying device is used to dry the slurry on the outer surface of the pole piece; and for the inner slurry, the substrate is made of metal material, and when the magnetic drying unit approaches the pole piece and rotates, the substrate of the pole piece will cut the magnetic flux lines emitted by the permanent magnet inside the magnetic drying unit, so that a certain current is generated inside the substrate for heating, thereby heating and heat conducting the inner slurry close to the substrate. The generated heat will be continuously transferred until the entire slurry is covered, and the hot air drying device is used to achieve synchronous heating of the inside and outside of the slurry, thereby improving the problems of poor pole piece drying quality and low drying efficiency existing in the related art.

[0028] 2. When current is generated inside the substrate, in addition to causing the pole piece to heat up, the current will also generate a magnetic field that repels the permanent magnet, that is, the pole piece will be pushed by the permanent magnet in the magnetic drying group, so that the magnetic drying unit can play a certain supporting role on the substrate. By setting up a lifting mechanism, the magnetic drying group can move towards or away from the pole piece under the drive of the lifting mechanism, thereby adjusting the supporting force of the substrate to reduce the contact and scraping between the pole piece and the transmission device during transportation, thereby improving the drying quality of the pole piece.

[0029] 3. By setting a reciprocating seat, the corresponding magnetic drying group is driven to move by the reciprocating seat, so that the magnetic drying device can move to the same place to dry the specific part of the pole piece in a targeted manner, and the magnetic drying group can also be driven to reciprocate to make the heating effect on the pole piece more uniform.

[0030] 4. Using the drying method of the present application, by detecting the horizontal parameters and temperature parameters of the material, and adjusting the magnetic flux density and drying power according to the horizontal parameters and temperature parameters, it can effectively ensure that the various parameters in the material drying process are within a reasonable range, thereby improving the drying efficiency and drying quality of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a schematic diagram of the structure of a coating electrode drying box according to the first embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the results of coating the magnetic drying device in the pole piece drying box in the embodiment of the present application;

[0034] Figure 3 It is a schematic diagram of the operation of the permanent magnet and the material in the magnetic drying unit;

[0035] Figure 4 It is a structural schematic diagram of the magnetic drying device when it is combined with the material;

[0036] Figure 5 It is a top view of the magnetic drying group and the material when they are matched;

[0037] Figure 6 It is a schematic diagram of the coordination between the temperature monitoring mechanism and the material;

[0038] Figure 7 This is a schematic diagram of the steps of the drying method of Example 2 of the present application.

[0039] Description of reference numerals:

[0040] 1. Box body; 2. Transmission device; 21. Transmission roller; 3. Hot air drying device; 4. Magnetic drying device; 41. Magnetic drying group; 411. Magnetic drying unit; 4111. Permanent magnet; 42. Lifting mechanism; 43. Base; 44. Reciprocating seat; 5. Detection device; 51. Horizontal detection mechanism; 52. Temperature monitoring mechanism; 6. Radiation drying device; 61. Heater. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0047] Embodiment 1

[0048] Reference Figure 1 and Figure 2 On the one hand, the present application provides a coating electrode drying box, including a box body 1, in which a transmission device 2 and a hot air drying device 3 are arranged. The transmission device 2 is used to transport materials, and the transmission device 2 includes a transmission roller 21 rotatably connected to the box body 1, and the transmission roller 21 is arranged horizontally. In this embodiment, the transmission roller 21 is located at the feed port of the box body 1 and the discharge port of the box body 1. Driven by the rotation of the transmission roller 21, the side of the material coated with the slurry is input into the box body 1 through the transmission roller 21 with the image facing upward, and after drying in the box body 1, the material is discharged from the box body 1 through the transmission roller 21. The hot air drying device 3 includes a plurality of air outlet mechanisms and a plurality of air suction mechanisms arranged in the box body 1, and the plurality of air outlet mechanisms and the plurality of air suction mechanisms are arranged above the box body 1 and facing the slurry surface of the material. The air outlet mechanism is used to blow hot air to the material to dry the slurry on the surface of the material; the air suction mechanism is used to absorb the air in the box body 1, thereby taking away moisture and NMP gas.

[0049] In order to improve the efficiency and quality of material drying, the housing 1 is also provided with a magnetic drying device 4, which includes a plurality of magnetic drying groups 41 installed on the housing 1, and the plurality of magnetic drying groups 41 are laid and extended along the transmission direction of the transmission device 2, and the plurality of magnetic drying groups 41 are parallel to each other. The magnetic drying group 41 includes a plurality of magnetic drying units 411 rotatably connected to the housing 1, and the magnetic drying units 411 rotate with their own axes as the rotation axes, and the plurality of magnetic drying units 411 are laid and extended along the transmission direction perpendicular to the transmission device 2, that is, the arrangement direction of the plurality of magnetic drying units 411 is perpendicular to the transmission direction of the transmission device 2. The magnetic drying unit 411 includes a permanent magnet 4111, and by arranging the magnetic drying unit 411 below the material, a magnetic flux line with a certain density can be formed in the transportation direction of the material.

[0050] In addition, the magnetic drying device 4 also includes a lifting mechanism 42 for driving the magnetic drying group 41 to rise or fall. The lifting mechanism 42 is arranged on the box body 1. The lifting mechanism 42 can approach or move away from the direction of the material. The lifting mechanism 42 can be a cylinder or a linear module. A plurality of magnetic drying groups 41 are arranged on the lifting mechanism 42. Driven by the lifting mechanism 42, the plurality of magnetic drying groups 41 can move toward or away from the pole piece, thereby adjusting the density of the magnetic flux lines at the pole piece of the material.

[0051] Reference Figure 3 , Figure 4 and Figure 5 At the same time, a base 43 is also arranged between the lifting mechanism 42 and the plurality of magnetic drying groups 41. The base 43 has a plurality of guide rails, which are perpendicular to the conveying direction of the material. The guide rails are slidably connected to a reciprocating seat 44 one by one. The reciprocating seat 44 is laid and extended along the transmission direction perpendicular to the transmission device 2. The plurality of magnetic drying groups 41 are installed on the reciprocating seat 44 one by one. Driven by the reciprocating seat 44, the plurality of magnetic drying groups 41 can move along the conveying direction perpendicular to the material. In this embodiment, the length of the reciprocating seat 44 is L, the moving stroke of the reciprocating seat 44 is S, and the width of the material is D; L, S and D satisfy: LS>D. By such an arrangement, during the movement of the reciprocating seat 44, the heating range of the magnetic drying group 41 can cover the effective width D of the material pole piece.

[0052] By setting the lifting mechanism 42, the base 43 and the reciprocating seat 44, the magnetic drying group 41 will move towards or away from the material under the drive of the lifting mechanism 42, so as to adjust the overall magnetic flux density at the material, so as to adjust the reaction force applied to the material. In order to ensure the uniformity of material drying and the stability of the operation of the magnetic drying device, the movement directions of adjacent reciprocating seats 44 are in opposite states. By setting the magnetic drying device 4 in this way, when the material enters the box 1, the magnetic drying group 41 will reciprocate, and the magnetic drying unit 411 will rotate at the same time. The substrate of the material cuts the magnetic flux lines, forming multiple annular current loops in the substrate.

[0053] In order to monitor the drying process of the material, the coated electrode drying box also includes a detection device 5, which includes a horizontal detection mechanism 51 for detecting the degree of upward or downward deflection of the material and a temperature monitoring mechanism 52 for detecting the temperature of the material. The horizontal detection mechanism 51 and the temperature monitoring mechanism 52 are arranged in the box body 1.

[0054] In this embodiment, the horizontal detection mechanism 51 includes four groups of transmitting and receiving components, two groups of transmitting and receiving components are located at the discharge port of the box body 1 and are respectively located above and below the material, and two groups of transmitting and receiving components are located at the feed port of the box body 1 and are respectively located above and below the material. Each group of transmitting and receiving components includes a laser transmitter and a laser receiver, and the laser transmitter and the laser receiver are respectively arranged on both sides of the transmission roller. The laser receiver can know the degree of upward or downward deflection of the material by receiving the light beam emitted by the laser transmitter and calculating.

[0055] Reference Figure 6 The temperature monitoring mechanism 52 includes a plurality of temperature sensors located above the material. In this embodiment, the material is evenly divided into a plurality of regions along the length direction. Each region is provided with a temperature sensor corresponding to the region. By providing the temperature sensor, the temperature of the corresponding region of the material at this time can be conveniently known. The temperature sensor can be a MEMS micro-vibration mirror type semi-solid laser scanner, or a phased array solid-state laser scanner, so as to improve the scanning rate and resolution and reduce the volume. The temperature sensor can also be an infrared imaging temperature monitor.

[0056] In addition, in this embodiment, the coating electrode drying box also includes a radiation drying device 6, which includes a plurality of heaters 61 arranged on the box body 1, and the plurality of heaters 61 are oriented toward the side of the material coated with the slurry to assist the hot air drying device 3. The heater 61 can be specifically one or more combinations of an infrared radiation heater 61, an ultraviolet radiation heater 61, a laser heater 61, and a microwave heater 61, as long as the radiation drying of the material can be achieved. It can be understood that the purpose of setting the radiation drying device 6 is to enhance the drying rate of the material surface. When the drying rate of the material surface has reached the specified rate through the hot air drying device 3, the setting of the radiation drying device 6 can be omitted.

[0057] Embodiment 2

[0058] Reference Figure 7 On the other hand, the present application provides a drying method for the above-mentioned coated electrode drying oven, comprising the following steps:

[0059] S1: Send the material coated with slurry into the drying oven;

[0060] Specifically, the material with the slurry coated on the upper surface is sent into the drying box through the transmission device 2.

[0061] S2: Dry the surface of the material and set magnetic flux lines on one side of the material;

[0062] Specifically, the hot air drying device 3 is used to dry the surface of the material, and at the same time, the magnetic drying device 4 is used to set magnetic flux lines below the material.

[0063] S3: The metal substrate in the material cuts the magnetic flux lines, generating current and reaction force;

[0064] Specifically, the material pole piece will cut the magnetic flux lines during the horizontal movement, and generate a certain current in the material pole piece, which will generate a certain amount of heat. At the same time, the current will generate a certain reaction force on the material pole piece in the magnetic field to support the material. At the same time, in order to ensure the uniformity of drying the material, the adjacent reciprocating seats 44 run in opposite directions.

[0065] S4: Detect and obtain the level parameters and temperature parameters of the material;

[0066] Specifically, S4 includes:

[0067] S4.1: Detect and obtain the feeding level when the material is fed in and the discharging level when the material is discharged, and compare them with the preset height range. Specifically, the laser transmitters of the four sets of transmitting and receiving components at both ends of the box 1 and located above and below the material can emit laser beams to the laser receiver. If the material deflects upward or downward, it will block the laser emitted from above or below. The laser receiver receives and determines the amount of blocking of the laser beam, and the feeding level and the discharging level of the material can be known. The degree of upward or downward deflection can be known by comparing with the preset value.

[0068] S4.2: Divide the material into N scanning areas along the moving direction, measure the temperature of the N scanning areas and obtain the corresponding temperature parameter Nx, and compare the corresponding temperature parameter Nx with the preset temperature range. Specifically, the N scanning areas can be scanned in sequence by the temperature sensor, and the corresponding readings can be obtained and compared with the preset temperature range.

[0069] S5: Adjust the position of the material according to the horizontal parameters;

[0070] Specifically, S5 includes: if the feed level or the discharge level is not within the preset height range, then increasing or decreasing the density of the magnetic induction lines until the feed level or the discharge level is within the preset height range.

[0071] Generally speaking, the feeding level or the discharging level will be less than the preset height range. At this time, the secondary drying device does not support the material enough, causing the material to be transported close to the transmission device 2. The transmission roller 21 is mostly made of 9CR2Mo material, and its thermal conductivity is about 20W / (m·K). Under standard conditions, the thermal conductivity of air is about 0.0244W / (m·K), which will cause the transmission roller to contact the material for rapid heat conduction, affecting the drying uniformity of the material pole piece. Therefore, it is necessary to drive the magnetic drying group 41 to rise close to the material through the lifting mechanism 42, thereby increasing the density of the magnetic flux lines at the material, increasing the support for the material, and reducing the contact area between the material and the transmission roller, thereby ensuring the drying uniformity of the material pole piece.

[0072] S6: Adjust the substrate heating value of the material according to the temperature parameters.

[0073] Specifically, S6 includes: if the temperature parameter Nx of the corresponding scanning area is not within the preset temperature range, increasing or decreasing the drying power of the corresponding area until the temperature parameter Nx of the corresponding scanning area is within the preset temperature range.

[0074] It should be noted that there are multiple temperature measurement points in a scanning area. The temperature parameter Nx of the area can be obtained by measuring multiple temperature measurement points and calculating, or multiple temperature measurement points can be independently judged to obtain the temperature parameter Nx. If the temperature parameter Nx is less than the preset temperature range, the power of the hot air drying device 3 or the radiation drying device 6 is increased, so that the temperature parameter Nx changes until Nx is within the preset temperature range. If the temperature parameter Nx is greater than the preset temperature range, the power of the hot air drying device 3 or the radiation drying device 6 is reduced, so that the temperature parameter Nx changes until Nx is within the preset temperature range. By performing detection and adjustment in this way, areas where the drying quality is difficult to control, such as the edge of the material, can be accurately heated and dried, thereby effectively ensuring the drying quality.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A coating electrode drying box, comprising a box body (1), wherein a transmission device (2) and a hot air drying device (3) are arranged in the box body (1), characterized in that: The housing (1) is further provided with a magnetic drying device (4), the magnetic drying device (4) comprising a plurality of magnetic drying groups (41) mounted on the housing (1), the plurality of magnetic drying groups (41) being arranged and extending along the transmission direction of the transmission device (2), the magnetic drying groups (41) comprising a plurality of magnetic drying units (411) rotatably connected to the housing (1), the plurality of magnetic drying units (411) being arranged and extending along the transmission direction perpendicular to the transmission device (2), the magnetic drying units (411) comprising permanent magnets (4111); The magnetic drying device (4) further comprises a lifting mechanism (42), wherein the lifting mechanism (42) is arranged on the box body (1), and a plurality of the magnetic drying groups (41) are arranged on the lifting mechanism (42), and the plurality of the magnetic drying groups (41) can move in a direction close to or away from the pole piece; The lifting mechanism (42) is provided with a base (43), the base (43) has a plurality of guide rails, the guide rails are slidably connected to reciprocating seats (44) in a one-to-one correspondence, the reciprocating seats (44) are laid and extended along a transmission direction perpendicular to the transmission device (2), and the plurality of magnetic drying groups (41) are installed on the reciprocating seats (44).

2. A coating electrode drying oven according to claim 1, characterized in that: The length of the reciprocating seat (44) is L, the moving stroke of the reciprocating seat (44) is S, and the width of the material is D; L, S and D satisfy: LS>D.

3. A coating electrode drying oven according to claim 1 or 2, characterized in that: It also includes a detection device (5), which includes a horizontal detection mechanism (51) for detecting the degree of upward or downward deflection of the material and a temperature monitoring mechanism (52) for detecting the temperature of the material. The horizontal detection mechanism (51) and the temperature monitoring mechanism (52) are arranged on the box body (1).

4. A coating electrode drying oven according to claim 1 or 2, characterized in that: It also comprises a radiation drying device (6), wherein the radiation drying device (6) comprises a plurality of heaters (61) arranged on the box (1).

5. A drying method for a coated electrode drying oven according to any one of claims 1 to 4, characterized in that: The steps include: S1: Send the material coated with slurry into the drying oven; S2: Dry the surface of the material and set magnetic flux lines on one side of the material; S3: The metal substrate in the material cuts the magnetic flux lines, generating current and reaction force; S4: Detect and obtain the level parameters and temperature parameters of the material; S5: adjusting the position of the material according to the horizontal parameter; S6: adjusting the substrate heating value of the material according to the temperature parameter; The S5 specifically includes: If the feed level or the discharge level is not within the preset height range, the density of the magnetic induction lines is increased or decreased until the feed level or the discharge level is within the preset height range.

6. A drying method according to claim 5, characterized in that: The S4 specifically includes: S4.1: Detect and obtain the feeding level height when the material is fed in and the discharging level height when the material is discharged, and compare them with the preset height range; S4.2: Divide the material into N scanning areas along the moving direction of the material, measure the temperature of the N scanning areas and obtain corresponding temperature parameters Nx, and compare the corresponding temperature parameters Nx with the preset temperature range.

7. A drying method according to claim 6, characterized in that: The S6 specifically includes: If the temperature parameter Nx of the corresponding scanning area is not within the preset temperature range, the drying power of the corresponding area is increased or decreased until the temperature parameter Nx of the corresponding scanning area is within the preset temperature range.

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