Electrode heating device

Abstract

A heating device according to one embodiment of the present invention is a heating device for heating an electrode, comprising: at least one heating lamp positioned opposite the electrode; a heating chamber having an internal housing space for housing the heating lamp and configured to allow the electrode to pass through; and a control module configured to adjust the temperature of the electrode.

Description

Technical Field

[0001] The present invention relates to an electrode heating device.

[0002] This application claims priority based on Korean Patent Application No. 10-2023-0105889 filed on August 11, 2023, and all the contents disclosed in the specification and drawings of the said application are incorporated into this application.

Background Art

[0003] Secondary batteries with high applicability to product groups and having electrical characteristics such as high energy density are generally applied not only to portable devices but also to electric vehicles (EVs) or hybrid electric vehicles (HEVs) driven by an electric drive source. Such secondary batteries have not only the main advantage of being able to dramatically reduce the use of fossil fuels but also the advantage of generating no by-products from the use of energy, and thus are attracting attention as a new energy source for environmental consideration and improving energy efficiency.

[0004] Currently, widely used types of secondary batteries include lithium-ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries, etc. The operating voltage of such a unit secondary battery cell, that is, a unit battery cell, is about 2.5V to 4.5V. Therefore, when a higher output voltage is required, a battery pack may be configured by connecting a plurality of battery cells in series. Also, depending on the charge-discharge capacity required for the battery pack, a battery pack may be configured by connecting a plurality of battery cells in parallel. Therefore, the number of battery cells included in the battery pack can be variously set according to the required output voltage and / or charge-discharge capacity.

[0005] On the other hand, when manufacturing such secondary batteries, a process of hot-rolling the electrodes is necessary. In order to ensure smooth electrode rolling, it is necessary to preheat the electrodes beforehand. This is called the pre-heating process. Conventionally, pre-heating was performed using a roll press, but this had the problem of causing electrode temperature differences due to the operating speed of the equipment and the type of electrode caused by the roll press, resulting in electrode wrinkles. [Overview of the project] [Problems that the invention aims to solve]

[0006] Therefore, one objective of the present invention is to prevent wrinkles from forming on the electrodes during the electrode heating process.

[0007] In another embodiment, the present invention also aims to heat an electrode to a certain temperature.

[0008] In another embodiment, the present invention also aims to reduce the linear pressure applied to the electrodes during the preheating process.

[0009] However, the technical problems that this invention aims to solve are not limited to those mentioned above, and other problems not mentioned will be clearly understood by an ordinary person of the art from the description of the invention below. [Means for solving the problem]

[0010] An electrode heating device according to one embodiment of the present invention for solving the above problems is a heating device for heating an electrode, comprising: at least one heating lamp arranged opposite the electrode; a heating chamber having an internal housing space for housing the heating lamp and configured to allow the electrode to pass through; and a control module configured to adjust the temperature of the electrode.

[0011] Preferably, the heating lamp may be an infrared lamp.

[0012] In one embodiment of the present invention, the heating lamp may be positioned at a predetermined distance from the electrode.

[0013] In another embodiment of the present invention, a plurality of heating lamps may be provided along the direction of travel of the electrodes.

[0014] In yet another embodiment of the present invention, the heating lamp may include at least one of an upper heating lamp positioned above the electrode and a lower heating lamp positioned below the electrode.

[0015] In particular, the heating lamps may be arranged facing each other in opposite directions with the electrode in between.

[0016] In one embodiment of the present invention, the control module may be configured to adjust the distance between the electrode and the heating lamp.

[0017] Preferably, the heating chamber may further include at least one pneumatic cylinder housed within it, and a bracket connected to at least a portion of the pneumatic cylinder and to which the heating lamp is mounted.

[0018] Here, the control module can control the operation of the pneumatic cylinder.

[0019] In this case, the control module may be configured to adjust the distance between the electrode and the heating lamp in multiple steps.

[0020] Furthermore, the control module may be configured to continuously adjust the distance between the electrode and the heating lamp.

[0021] In one embodiment of the present invention, the heating chamber may further include an exhaust device provided in the heating chamber and configured to discharge the fluid inside the heating chamber to the outside of the heating chamber.

[0022] Preferably, the exhaust device can be a ring blower.

[0023] In another aspect of the present invention, it can further include a temperature sensor configured to measure the temperature of the electrode.

[0024] In another aspect of the present invention, the control module can be configured to adjust the traveling speed of the electrode.

[0025] In still another aspect of the present invention, the control module can be configured to adjust the output of the heating lamp.

Advantages of the Invention

[0026] According to the present invention, it is possible to prevent wrinkles from occurring on the electrode during the electrode heating process.

[0027] Also, according to the present invention, the electrode can be heated to a constant temperature.

[0028] Also, according to the present invention, it is possible to reduce the linear pressure applied to the electrode during the preheating process.

[0029] However, the effects obtained by the present invention are not limited to the above-mentioned effects, and other technical effects not mentioned will be clearly understood by those skilled in the art from the description of the invention described below.

[0030] The following drawings attached to this specification illustrate the preferred embodiments of the present invention and serve to further understand the technical idea of the present invention together with the detailed description of the invention. Therefore, the present invention should not be construed as being limited only to the matters described in the drawings.

Brief Description of the Drawings

[0031] [Figure 1] It is a diagram for explaining the electrode rolling process including the heating device according to an embodiment of the present invention. [Figure 2] It is a plan view of FIG. 1. [Figure 3] This is a diagram illustrating a heating device according to one embodiment of the present invention. [Figure 4] Figure 3 is a front view. [Figure 5] This is a plan view of Figure 3. [Figure 6] This figure illustrates the heating lamp included in the heating device shown in Figure 3. [Figure 7] This diagram illustrates the relationship between the heating lamp and electrodes included in the heating device shown in Figure 3. [Figure 8] This diagram illustrates the relationship between the heating lamp and electrodes included in the heating device shown in Figure 3. [Modes for carrying out the invention]

[0032] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and in the claims shall not be interpreted in their usual and dictionary sense, but rather in a sense and concept appropriate to the technical idea of ​​the present invention, in accordance with the principle that the inventor himself may appropriately define the concept of terms in order to best describe the invention.

[0033] Therefore, it should be understood that the configurations shown in the embodiments described herein represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the present invention, and that there are various equivalents and modifications that can be substituted therein at the time of filing this application.

[0034] Furthermore, in order to facilitate understanding of the invention, the accompanying drawings are not shown to actual scale, and the dimensions of some components may be exaggerated.

[0035] Figure 1 is a diagram illustrating the rolling process of an electrode E including a heating device 1 according to one embodiment of the present invention, and Figure 2 is a plan view of Figure 1. On the other hand, Figure 3 is a diagram illustrating the heating device 1 according to one embodiment of the present invention. Figure 4 is a front view of Figure 3, and Figure 5 is a plan view of Figure 3.

[0036] Referring to Figures 1 to 5, the heating device 1 may include a heating lamp 10, a heating chamber 20, and a control module 30.

[0037] More specifically, the heating device 1 may be a heating device 1 that heats an electrode E. In this case, the electrode E may be an electrode E included in a secondary battery. For example, the electrode E may be aluminum foil or copper foil. The electrode E may undergo a hot rolling process R during the manufacturing process of the electrode E. In the hot rolling process, the electrode is compressed by pressure from above and below by the rolling rolls R1. In this case, in order to carry out hot rolling smoothly even at low pressure, it is necessary to preheat the electrode E before the hot rolling process. This is called the preheating process. The heating device 1 of the present invention can be applied before the hot rolling process in this manner.

[0038] On the other hand, conventionally, preheating was performed using a roll press, but this caused problems such as electrode temperature differences due to the operating speed of the equipment and the type of electrode caused by the roll press, resulting in electrode wrinkles. The inventors of this invention recognized these problems and devised the present invention to solve them, and the specific components and effects will be described in detail below.

[0039] Referring to Figures 3 to 5, the heating lamp 10 may be positioned opposite the electrode E.

[0040] In this case, at least one heating lamp 10 may be provided. For example, as shown in Figure 3, multiple heating lamps 10 may be provided.

[0041] The heating chamber 20 may be configured to have an internal housing space for accommodating the heating lamp 10.

[0042] For example, referring to Figures 3 to 5, the heating chamber 20 may be a roughly rectangular chamber capable of accommodating a variety of components.

[0043] On the other hand, the heating chamber 20 may be configured to allow the electrode E to pass through. For example, when the front and rear surfaces are perpendicular to the direction of travel A of the electrode E, slits configured to allow the electrode E to pass through may be provided on the front and rear surfaces of the heating chamber 20. The electrode E can enter the heating chamber 20 through the slits. The electrode E can also exit the heating chamber 20 through the slits. On the other hand, the heating chamber 20 may include an internal space that can accommodate not only the heating lamp 10 but also other components.

[0044] The control module 30 may be configured to adjust the temperature of electrode E.

[0045] For example, the control module 30 can control the temperature of electrode E to be within a range of approximately room temperature to approximately 140°C or less. Preferably, the control module 30 can control the temperature of electrode E to be within a range of approximately room temperature to approximately 110°C or less. When the temperature of electrode E is controlled within such a temperature range, the rolling of electrode E can be performed more smoothly in the subsequent hot rolling process R. In addition, it is possible to prevent wrinkles from forming on electrode E.

[0046] Thus, the heating device 1 of the present invention, by comprising at least one heating lamp 10, a heating chamber 20, and a control module 30, enables efficient temperature control of the electrode E. Furthermore, the number of times the electrode E passes through the roll is reduced, simplifying the process. In addition, wrinkles generated on the electrode E are reduced, resulting in improved yield. Moreover, the above configuration allows for a reduction in the linear pressure applied to the electrode E during the preheating process.

[0047] Figure 6 is a diagram illustrating the heating lamp 10 included in the heating device 1 shown in Figure 3.

[0048] The heating lamp 10 may be a lamp that is substantially linear in shape, as shown in Figure 6. When the heating lamp 10 is substantially linear in this way, as can be seen from Figure 4, the heating lamp 10 may be arranged substantially perpendicular to the electrode travel direction A. Alternatively, the heating lamp 10 may be a lamp that is substantially bulb-shaped. When the heating lamp 10 is substantially bulb-shaped in this way, the heating lamps 10 may be arranged at predetermined intervals on the bracket 41, which will be described later. For example, the heating lamps 10 may be arranged in a substantially checkerboard pattern. With this arrangement, the electrode E can be heated uniformly as a whole.

[0049] The heating lamp 10 may be, for example, an infrared lamp. An infrared lamp can heat an object without directly contacting it. As a result, according to the present invention, the object that comes into contact with electrode E during the preheating process of electrode E can be minimized. Consequently, according to the present invention, the occurrence of electrode wrinkles during the preheating process can be suppressed.

[0050] On the other hand, although this specification has described the case in which the heating lamp 10 is an infrared lamp as an example, the type of heating lamp 10 in the present invention is not necessarily limited to an infrared lamp, and any type of lamp that can heat the electrode E without being in contact with the electrode E can be used in the present invention.

[0051] Figure 7 is a diagram illustrating the relationship between the heating lamp 10 and electrode E included in the heating device 1 of Figure 3, and Figure 8 is a diagram illustrating the relationship between the heating lamp 10 and electrode E included in the heating device 1 of Figure 3.

[0052] In one embodiment of the present invention, the heating lamp 10 may be positioned at a predetermined distance from the electrode E. For example, referring to Figure 7, the electrode E and the heating lamp 10 are separated by a distance d1. With such a structure, the electrode E can be effectively heated without direct contact between the electrode E and the heating lamp 10. As a result, according to the present invention, the objects that come into contact with the electrode E during the preheating process can be minimized. Consequently, the occurrence of electrode wrinkles during the preheating process can be suppressed.

[0053] In another embodiment of the present invention, a plurality of heating lamps 10 may be provided along the direction of travel A of the electrode E.

[0054] For example, referring to Figure 7, the heating device 1 according to one embodiment of the present invention can be equipped with a plurality of heating lamps 10 along the direction of travel A of the electrode E. In the embodiment of Figure 7, six heating lamps 10 are arranged at predetermined intervals along the direction of travel A of the electrode E. With such a structure, the electrode E can be effectively heated even if the range of travel distance of the electrode E is short. In other words, with the above structure, the heating time during which the electrode E faces the heating lamps 10 can be extended. For example, in order for the electrode E to reach a desired temperature, a heating time above a certain level may be required. However, since the electrode E continues to move during the manufacturing process, if it stops at a certain point and continues heating, the process efficiency may decrease. Therefore, by arranging a plurality of heating lamps 10 along the direction of travel A of the electrode, the electrode E can be heated to a predetermined temperature, and furthermore, the temperature of the heated electrode E can be maintained.

[0055] On the other hand, in one embodiment of the present invention, the multiple heating lamps 10 may be controlled to produce the same output. Alternatively, in another embodiment of the present invention, the multiple heating lamps 10 may be controlled to produce different outputs from one another. That is, the control module 30 of the present invention can independently control the temperatures of the multiple heating lamps 10 so that the electrode E is heated with various temperature profiles depending on the material or form of the electrode E being heated.

[0056] In yet another embodiment of the present invention, the heating lamp 10 may include at least one of an upper heating lamp 11 positioned above the electrode E and a lower heating lamp 12 positioned below the electrode E.

[0057] For example, the system may be equipped with only an upper heating lamp 11, or only a lower heating lamp 12. Alternatively, as shown in Figures 7 and 8, it may be equipped with both an upper heating lamp 11 and a lower heating lamp 12. In this case, the heating lamps 10 may be arranged facing each other in opposite directions with the electrode E in between. With such a structure, the upper surface and the lower surface of the electrode E can be heated simultaneously, so that the temperature of the electrode E can be heated uniformly as a whole.

[0058] In yet another embodiment of the present invention, the control module 30 may be configured to adjust the distance between the electrode E and the heating lamp 10.

[0059] For example, referring to Figure 7, the distance between electrode E and heating lamp 10 is d1, and referring to Figure 8, the distance between electrode E and heating lamp 10 is d2. In other words, with this embodiment, the distance between electrode E and heating lamp 10 can be adjusted to various values. With such a configuration, the temperature of electrode E can be adjusted in various ways by adjusting the distance between electrode E and heating lamp 10. For example, as shown in Figure 7, if the distance between electrode E and heating lamp 10 is d1, and the temperature of electrode E is T1, then as shown in Figure 8, if the distance between electrode E and heating lamp 10 becomes d2, which is greater than d1, the temperature of electrode E T2 can be controlled to be lower than T1.

[0060] On the other hand, in order to adjust the distance between the electrode E and the heating lamp 10, the heating device 1 according to one embodiment of the present invention may further include at least one pneumatic cylinder 40 housed in a heating chamber 20, and a bracket 41 connected to at least a portion of the pneumatic cylinder 40 and to which the heating lamp 10 is attached. In this case, the control module 30 can control the operation of the pneumatic cylinder 40.

[0061] Referring to Figures 3, 5, 7, and 8, at least one heating lamp 10 can be mounted on the bracket 41. Preferably, multiple heating lamps 10 can be mounted on the bracket 41. In this case, at least one pneumatic cylinder 40 can be connected to the bracket 41. For example, in the embodiments of Figures 3, 5, 7, and 8, six upper heating lamps 11 are provided on the upper bracket 41, and six lower heating lamps 12 are provided on the lower bracket 41. Also, in the embodiments of Figures 3, 5, 7, and 8, one pneumatic cylinder 40 is provided on each side end of the upper bracket 41, for a total of two pneumatic cylinders 40 at the top. Also, one pneumatic cylinder 40 is provided on each side end of the lower bracket 41, for a total of two pneumatic cylinders 40 at the bottom. In this case, when the control module 30 pulls the piston of the pneumatic cylinder 40 out of the cylinder, the bracket 41 attached to and connected to the pneumatic cylinder 40 moves forward toward the electrode E. Therefore, the distance between the heating lamp 10 mounted on the bracket 41 and the electrode E can be reduced. This may cause the temperature of electrode E to rise further. On the other hand, when the control module 30 inserts the piston of the pneumatic cylinder 40 into the cylinder, the bracket 41, which is attached to and connected to the pneumatic cylinder 40, moves away from electrode E. Therefore, the distance between the heating lamp 10 mounted on the bracket 41 and electrode E can be increased. This may cause the temperature of electrode E to fall further.

[0062] On the other hand, although the present invention has described a pneumatic cylinder 40 as an example of a component for adjusting the distance between electrode E and heating lamp 10, the scope of the present invention is not limited to this, and it goes without saying that any structure that can adjust the distance between one component and another can be used in the present invention.

[0063] On the other hand, although Figure 3 shows the control module 30 connected to the lower bracket 41 and the lower heating lamp 10 for illustrative purposes, it goes without saying that the control module 30 can also be connected to the upper bracket 41 and the upper heating lamp 10, allowing control of the upper components as well.

[0064] In yet another embodiment of the present invention, the control module 30 may be configured to adjust the distance between the electrode E and the heating lamp 10 in a plurality of steps.

[0065] For example, as shown in Figure 7, the control module 30 can set the distance between electrode E and heating lamp 10 to d1, and as shown in Figure 8, it can set the distance between electrode E and heating lamp 10 to d2. Alternatively, although not shown, the distance between electrode E and heating lamp 10 can be configured in two or more stages. As an example, the distance between electrode E and heating lamp 10 can be configured to be adjustable in 10 stages. With such a configuration, the heating device of the present invention can be applied to various cases where the heating conditions differ depending on the material or thickness of electrode E. For example, if the material of electrode E is a material with a relatively high heat capacity, the output transmitted to electrode E can be increased by adjusting the stages so that the distance between heating lamp 10 and electrode E becomes narrower. Alternatively, as another example, if the thickness of electrode E is relatively thin, the output transmitted to electrode E can be reduced by adjusting the stages so that the distance between heating lamp 10 and electrode E becomes relatively wider.

[0066] Furthermore, the control module 30 can also be configured to continuously adjust the distance between the electrode E and the heating lamp 10. Such an embodiment is particularly advantageous when the thickness of the electrode E changes continuously.

[0067] In yet another embodiment of the present invention, the distance between the upper heating lamp 11 and the electrode E may be configured to be the same as the distance between the lower heating lamp 12 and the electrode E.

[0068] For example, referring to Figures 7 and 8, the distance between the upper heating lamp 11 and electrode E is equal to the distance between the lower heating lamp 12 and electrode E. On the other hand, although not shown, the distance between the upper heating lamp 11 and electrode E may be configured to be different from the distance between the lower heating lamp 12 and electrode E. That is, the control module 30 can independently control the distance between the upper heating lamp 11 and electrode E and the distance between the lower heating lamp 12 and electrode E, so as needed and applicable to various cases.

[0069] In one embodiment of the present invention, the heating device 1 may further include an exhaust device 50.

[0070] For example, referring to Figures 3 to 5, the exhaust device 50 may be provided in the heating chamber 20. Preferably, the exhaust device 50 may be provided inside the heating chamber 20. For example, as shown in Figure 3, the exhaust device 50 may be provided on the upper side of the space inside the heating chamber 20.

[0071] The exhaust device 50 may be configured to discharge the fluid inside the heating chamber 20 to the outside of the heating chamber 20. Here, the fluid may include, for example, moisture generated by the heating of the electrode E. Thus, according to the structure of the present invention, a drying effect on the electrode E can also be obtained by discharging moisture through the exhaust device 50.

[0072] On the other hand, the exhaust device 50 could be, for example, a ring blower. A ring blower is an exhaust device that transfers large volumes of air, gas, steam, etc., at low pressure.

[0073] On the other hand, although this specification has described a ring blower as an example of one embodiment of the exhaust device 50 of the present invention, the exhaust device 50 of the present invention is not limited to a ring blower, and any device that can discharge the fluid inside the heating chamber 20 to the outside of the heating chamber 20 can be said to be included in the scope of the heating device 1 of the present invention.

[0074] In yet another embodiment of the present invention, the heating device 1 may further include a temperature sensor 60. The temperature sensor 60 may be electrically connected to the control module 30.

[0075] For example, referring to Figures 3 to 5, the heating device 1 can be equipped with a temperature sensor 60 on the side where the electrode E advances. That is, the temperature sensor 60 can measure the temperature of the electrode E when it advances out of the heating chamber 20 after the electrode E has been heated in the heating chamber 20. The measured temperature can be transmitted to the control module 30. With the structure of the present invention in which the temperature sensor 60 is provided in this way, the temperature of the electrode E that has passed through the heating chamber 20 can be measured, and thereafter the control module 30 can adjust the heating temperature to match the desired temperature of the electrode E.

[0076] In yet another embodiment of the present invention, the control module 30 may be configured to adjust the speed of the electrode E's movement.

[0077] For example, the control module 30 is connected to a roller that moves the electrode E, and can adjust the rotation speed of the roller. In this way, by slowing down the speed at which the electrode E moves, the control module 30 can increase the time that the electrode E is in contact with the heating lamp 10. This can raise the temperature of the electrode E. Conversely, by increasing the speed at which the electrode E moves, the control module 30 can shorten the time that the electrode E is in contact with the heating lamp 10. This can lower the temperature of the electrode E.

[0078] On the other hand, in yet another embodiment of the present invention, the control module 30 may be configured to adjust the output of the heating lamp 10.

[0079] For example, the control module 30 can be electrically connected to a power supply unit that supplies power to the heating lamp 10. That is, the control module 30 can adjust the amount of power supplied to the heating lamp 10. For example, the control module 30 can adjust the output of the heating lamp 10 between 0 and 100%. Therefore, the temperature of electrode E can be easily adjusted simply by adjusting the output of the heating lamp 10, without adjusting the distance between the heating lamp 10 and electrode E or adjusting the speed at which electrode E moves.

[0080] In yet another aspect of the present invention, the control module 30 can adjust the temperature of electrode E by at least one of the following: (a) adjusting the distance between electrode E and heating lamp 10, (b) adjusting the speed of movement of electrode E, or (c) adjusting the output of heating lamp 10. For example, the temperature of electrode E can be adjusted by simply adjusting the distance between electrode E and heating lamp 10, or by adjusting the distance between electrode E and heating lamp 10 and simultaneously adjusting the speed of movement of electrode E, or by adjusting the speed of movement of electrode E and simultaneously adjusting the output of heating lamp 10.

[0081] Through the various embodiments described above, it is possible to prevent wrinkles from forming on electrode E during the heating process. Furthermore, electrode E can be heated to a constant temperature, and the linear pressure applied to electrode E during the preheating process can be reduced.

[0082] On the other hand, while terms indicating directions such as up and down are used in this specification, it will be obvious to an ordinary person skilled in the present invention that such terms are for explanatory convenience and may change depending on the position of the object in question, the position of the observer, etc.

[0083] Although the present invention has been described above with reference to limited embodiments and drawings, it goes without saying that the present invention is not limited thereto, and various modifications and variations are possible within the equivalent scope of the technical idea of ​​the present invention and the claims described below by persons with ordinary skill in the art to which the present invention pertains. [Explanation of symbols]

[0084] 1 Heating device 10 Heating lamp 11. Upper heating lamp 12. Lower heating lamp 20 Heating Chamber 30 Control Modules 40 Pneumatic cylinders 41 Bracket 50 Exhaust system 60 temperature sensors A Electrode advancing direction E-electrode R1 Rolling Roll

Claims

1. A heating device for heating electrodes, At least one heating lamp positioned opposite the electrode, A heating chamber having an internal housing space for housing the heating lamp and configured to allow the electrodes to pass through, A control module configured to adjust the temperature of the electrode, A heating device, including a heating device.

2. The heating device according to claim 1, wherein the heating lamp is an infrared lamp.

3. The heating device according to claim 1 or 2, wherein the heating lamp is arranged at a predetermined distance from the electrode.

4. The heating device according to claim 1 or 2, wherein a plurality of heating lamps are provided along the direction of travel of the electrodes.

5. The aforementioned heating lamp is An upper heating lamp positioned above the electrode, A lower heating lamp is positioned below the electrode, A heating apparatus according to claim 1 or 2, comprising at least one of the following.

6. The heating device according to claim 1 or 2, wherein the heating lamps are arranged opposite each other in opposite directions with the electrodes in between.

7. The heating apparatus according to claim 1 or 2, wherein the control module is configured to adjust the distance between the electrode and the heating lamp.

8. At least one pneumatic cylinder housed within the heating chamber, The present invention further includes a bracket connected to at least a portion of the pneumatic cylinder and to which the heating lamp is attached, The heating device according to claim 1 or 2, wherein the control module controls the operation of the pneumatic cylinder.

9. The heating apparatus according to claim 1 or 2, wherein the control module is configured to adjust the distance between the electrode and the heating lamp in a plurality of steps.

10. The heating apparatus according to claim 1 or 2, wherein the control module is configured to continuously adjust the distance between the electrode and the heating lamp.

11. The heating apparatus according to claim 1 or 2, further comprising an exhaust device provided in the heating chamber and configured to discharge the fluid in the heating chamber to the outside of the heating chamber.

12. The heating apparatus according to claim 11, wherein the exhaust device is a ring blower.

13. The heating apparatus according to claim 1 or 2, further comprising a temperature sensor configured to measure the temperature of the electrode.

14. The heating apparatus according to claim 1 or 2, wherein the control module is configured to adjust the advancement speed of the electrode.

15. The heating apparatus according to claim 1 or 2, wherein the control module is configured to adjust the output of the heating lamp.

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