Heating system for heating of profiled electrode sheets

Abstract

The utility model discloses a kind of heating systems for heating of special-shaped electrode sheet;Including unwinding unit, winding unit and heating assembly, and the winding unit and unwinding unit are formed with pole piece running channel, heating assembly is arranged in pole piece running channel side, heating assembly includes first laser heater;Or, heating assembly includes multiple second laser heater;Or, heating assembly includes profiling component and third laser heater for output third laser beam, profiling component includes profiling plate with the same shape as the shape of special-shaped electrode sheet The light beam through-hole of shape is opened, and the light beam through-hole is located on the light path of laser beam.The utility model is by first laser heater or multiple second laser heater or third laser heater collocation profiling plate, can obtain the same laser beam as the shape of special-shaped electrode sheet, radiate heating to special-shaped electrode sheet, satisfy the heating demand of special-shaped electrode sheet, improve electrode sheet heating efficiency, guarantee electrode sheet heating uniformity, improve electrode sheet yield.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and in particular to a heating system for heating irregularly shaped electrode sheets. Background Technology

[0002] In the field of new energy batteries, batteries are mainly composed of positive and negative electrodes and the battery casing. Among them, the electrodes play a crucial role in the various performance characteristics of the battery and directly determine its quality. During the production process of the electrodes, a baking process is required to reduce the moisture content of the electrodes to a specified range.

[0003] Currently, electrode heating mainly takes place in an oven, using high-temperature gas or electromagnetic heating methods to dry the electrodes. However, due to uneven temperature distribution within the oven, electromagnetic heating requires a considerable length of chamber. After heating, testing and analysis are conducted to determine if the desired effect has been achieved, but problems such as electrode powdering, damage, and reduced yield persist. Patent CN120149311A discloses a laser, electromagnetic wave, and X-ray radiation irradiation device for battery electrodes, which uses a laser to irradiate the electrode sheets, but this method cannot meet the requirements for radiation drying of irregularly shaped electrode sheets. Therefore, a heating system for heating irregularly shaped electrode sheets is urgently needed to solve the above problems. Utility Model Content

[0004] To solve the above problems, this utility model provides a heating system for heating irregularly shaped electrode sheets, including an unwinding unit, a winding unit, and a heating assembly. An electrode sheet running channel is formed between the winding unit and the unwinding unit. The heating assembly is disposed next to the electrode sheet running channel. The heating assembly includes a first laser heater. The shape of the first laser beam emitted by the first laser heater is the same as the shape of the irregularly shaped electrode sheet to be heated.

[0005] Alternatively, the heating assembly includes multiple second laser heaters, which are arranged adjacent to each other and whose emitted second laser beams overlap to form a laser beam group with the same shape as the irregular electrode sheet to be heated;

[0006] Alternatively, the heating assembly may include a contouring assembly and a third laser heater for outputting a third laser beam. The contouring assembly includes a contouring plate with a beam through-hole that has the same shape as the irregularly shaped electrode sheet to be heated. The beam through-hole is located in the optical path of the laser beam and the laser beam at its location can completely cover the beam through-hole. The contouring plate is equipped with a cooling mechanism to cool its plate body.

[0007] Furthermore, when the heating assembly includes the contouring assembly, the contouring assembly includes multiple contouring plates adapted to various irregularly shaped electrode sheets, and the third laser heater is selectively matched with one of the contouring plates.

[0008] Furthermore, when the heating assembly includes the contouring assembly, the contouring assembly further includes a contouring adjustment unit for adjusting the spatial position of the contouring plate.

[0009] Furthermore, the contouring adjustment unit includes a contouring lifting mechanism, and the contouring plate is connected to the contouring lifting mechanism to move closer to or further away from the third laser heater.

[0010] Furthermore, the contouring adjustment unit includes a contouring translation mechanism for adjusting the horizontal position of the contouring plate.

[0011] Furthermore, when the heating assembly includes the contouring assembly, the surface of the contouring plate is perpendicular to the optical axis of the third laser beam.

[0012] Furthermore, when the heating component includes the contouring component, the cooling mechanism includes a cooling medium channel disposed within the contouring plate, with a cooling medium inlet and a cooling medium outlet respectively at both ends of the cooling medium channel.

[0013] Furthermore, the cooling medium channel includes several medium flow channels, each of which surrounds the beam through hole. Every two adjacent medium flow channels are connected and all the medium flow channels form a cooling pipe. The inlet end of the cooling pipe is connected to the cooling medium inlet, and the outlet end of the cooling pipe is connected to the cooling medium outlet.

[0014] Furthermore, the heating assembly consists of two sets, which are respectively arranged on both sides of the electrode running channel.

[0015] Furthermore, it also includes an exhaust gas removal unit, which is arranged adjacent to the heating component.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0017] The heating system provided by this utility model for heating irregularly shaped electrode sheets uses a first laser beam emitted by a first laser heater with the same shape as the irregularly shaped electrode sheet to be heated, or multiple second laser beams emitted by second laser heaters overlap to form a laser beam group with the same shape as the irregularly shaped electrode sheet to be heated, or a third laser heater forms a third laser beam with the same shape as the irregularly shaped electrode sheet through a contour plate, to radiate heat the irregularly shaped electrode sheet, thereby meeting the heating requirements of the irregularly shaped electrode sheet, improving the heating efficiency of the irregularly shaped electrode sheet, ensuring the uniformity of heating of the irregularly shaped electrode sheet, and improving the yield of the electrode sheet. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the heating system for heating irregularly shaped electrode sheets provided by this utility model;

[0020] Figure 2 The laser radiation pattern of the heating system for heating irregularly shaped electrode sheets provided by this utility model;

[0021] Figure 3 A schematic diagram of the heating component in the heating system for heating irregularly shaped electrode sheets provided by this utility model. Figure 1 ;

[0022] Figure 4 A schematic diagram of the heating component in the heating system for heating irregularly shaped electrode sheets provided by this utility model. Figure 2 ;

[0023] Figure 5 A schematic diagram of the heating component in the heating system for heating irregularly shaped electrode sheets provided by this utility model. Figure 3 ;

[0024] Figure 6 A schematic diagram of the heating component in the heating system for heating irregularly shaped electrode sheets provided by this utility model. Figure 4 ;

[0025] Figure 7 A schematic diagram of the heating component in the heating system for heating irregularly shaped electrode sheets provided by this utility model. Figure 5 ;

[0026] Figure 8 A schematic diagram of the heating component in the heating system for heating irregularly shaped electrode sheets provided by this utility model. Figure 6 ;

[0027] Figure 9 The heating system for heating irregularly shaped electrode sheets provided by this utility model Figure 8 The main view;

[0028] Figure 10 This is a schematic diagram of the contouring component in the heating system for heating irregularly shaped electrode sheets provided by this utility model;

[0029] Figure 11A top view of the heating system for heating irregularly shaped electrode sheets provided by this utility model;

[0030] Figure 12 This is a partial schematic diagram of the heating system for heating irregularly shaped electrode sheets provided by this utility model;

[0031] Figure 13 This is a schematic diagram of the temperature controller in the heating system for heating irregularly shaped electrode sheets provided by this utility model.

[0032] 1-Unwinding unit; 2-Unwinding drive mechanism; 3-Electrode strip; 4-Heating assembly; 41-First laser heater; 411-Laser head; 412-Laser adjustment mechanism; 42-Following assembly; 421-Following plate; 422-Beam through hole; 423-Following adjustment unit; 424-Cold medium inlet; 425-Cold medium outlet; 43-First laser heater; 44-Second laser heater; 5-Exhaust gas removal unit; 6-Roller assembly; 7-Rewinding drive mechanism; 8-Rewinding unit; 9-Temperature controller. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. In the accompanying drawings, the dimensions and relative dimensions of certain parts may be enlarged for clarity.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "connected" should be interpreted broadly. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] In the description of this utility model, the terms "upper", "lower", "left", "right", "front", "back", "center", "horizontal", "vertical", "top", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, in the description of this utility model, the terms "first" and "second" are used merely for descriptive distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Additionally, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0037] As per the instruction manual Figure 1 As shown, this utility model provides a heating system for heating irregularly shaped electrode sheets, including an unwinding unit 1, a winding unit 8, and a heating component 4. An electrode sheet running channel is formed between the winding unit 8 and the unwinding unit 1. The heating component 4 is disposed next to the electrode sheet running channel. The heating component 4 includes a first laser heater 43. The shape of the first laser beam emitted by the first laser heater 43 is the same as the shape of the irregularly shaped electrode sheet to be heated.

[0038] Alternatively, the heating assembly 4 may include multiple second laser heaters 44, which are arranged adjacently and whose emitted second laser beams overlap to form a laser beam group with the same shape as the irregular electrode sheet to be heated.

[0039] Alternatively, the heating component 4 may include a contouring component 42 and a third laser heater 41 for outputting a third laser beam. The contouring component 42 may include a contouring plate 421, on which a beam through-hole 422 with the same shape as the irregular electrode sheet to be heated is opened. The beam through-hole 422 is located in the optical path of the laser beam and the laser beam at its location can completely cover the beam through-hole 422. The contouring plate 421 may be equipped with a cooling mechanism for cooling its plate body.

[0040] Specifically, the electrode strip 3 is tensioned between the unwinding unit 1 and the winding unit 8. The electrode strip 3 has several irregularly shaped electrode sheets. To radiate heat these irregularly shaped electrode sheets, the laser beam generated by the laser heater needs to have the same shape as the irregularly shaped electrode sheets. The irregularly shaped laser beam can be obtained in three ways: first, by using a first laser heater 43 whose emitted first laser beam has the same shape as the irregularly shaped electrode sheet to be heated; second, by using multiple second laser beams overlapping to form a group of laser beams with the same shape as the irregularly shaped electrode sheet to be heated; third, by using a third laser beam passing through the beam aperture 422 of the contour plate 421 to obtain a laser beam with the same shape as the irregularly shaped electrode sheet. Radial heating of the irregularly shaped electrode sheet can be achieved through any of these three methods, where the laser beams emitted by the first laser heater 43 and the second laser heater 44 can be achieved through a shaping optical path. (See attached specification). Figure 2The figures show several laser beam radiation patterns. Figure (a) can be achieved using either the first or third method, Figure (b) can be achieved using the two first laser heaters in the first method, Figure (c) can be achieved using the first method, and Figure (d) can be achieved using either the second or third method. The figures only show a few common laser beam radiation patterns. By adjusting the shaping optical path, adjusting the irradiation angle of the second laser heater, or configuring different shaped contour plates, the radiation heating requirements of the desired irregularly shaped electrode sheet can be achieved.

[0041] As one specific implementation method, see the appendix to the instruction manual. Figure 3-6 The diagram shows the structure of several first laser heaters 43. The first laser heater 43 is equipped with a shaping optical path, which can emit a first laser beam with the same shape as the irregular electrode sheet as needed.

[0042] As one specific implementation method, see the appendix to the instruction manual. Figure 7 As shown, the second laser beams emitted by two second laser heaters 44 overlap to form a laser beam group with the same shape as the irregular electrode sheet. The position and angle of the two second laser heaters 44 can be adjusted according to the shape of the irregular electrode sheet to achieve radiative heating of the irregular electrode sheet. The second laser heaters 44 can be any two of the first laser heaters 43, and the two second laser heaters 44 can be of the same model.

[0043] As one specific implementation method, see the appendix to the instruction manual. Figure 8-10 The diagram shows a schematic of the structure of the third laser heater 41 paired with the contouring component 42. The third laser heater 41 outputs a Gaussian laser beam and shapes it into a rectangular spot before irradiating it onto the contouring plate 421. This forms a third laser beam with the same shape as the irregularly shaped electrode sheet, which then irradiates the electrode sheet with laser, electromagnetic waves, and X-rays. This irradiates the irregularly shaped electrode sheet with laser, electromagnetic waves, and X-rays, allowing microscopic chemical reactions to occur inside the electrode sheet under the conditions of light radiation, thereby achieving the desired ideal state. The laser beam includes laser, electromagnetic, and X-ray components.

[0044] Specifically, the laser beam emitted by the laser heater irradiates the electrode sheet, radiating and heating it with minimal energy loss and low energy consumption. By using a continuous fiber laser beam to irradiate the electrode sheet under specific radiation, microscopic chemical reactions occur inside and outside the electrode sheet at specific temperatures. This alters the molecular structure of the electrode sheet, significantly extending its lifespan when used in batteries.

[0045] In an optimized implementation, when the heating component 4 includes the contouring component 42, the laser beam emitted from the third laser heater 41 irradiates the electrode sheet after passing through the beam aperture 422 on the contouring plate 421. For irregularly shaped electrode sheets, the beam aperture 422 of the contouring plate 421 has the same shape as the electrode sheet, and the laser beam at the position of the contouring plate 421 can fully cover the beam aperture 422, satisfying the radiation heating requirements of the irregularly shaped electrode sheet. The contouring plate 421 is equipped with a cooling mechanism to cool the plate. Laser radiation that does not pass through the beam aperture 422 irradiates the contouring plate 421, generating heat, which is then cooled by the cooling mechanism.

[0046] Preferably, when the heating component 4 includes the contouring component 42, the cooling mechanism is also connected to a heat recovery device to recover the heat radiated on the contouring plate 421 and improve energy utilization.

[0047] In an optimized implementation, when the heating component 4 includes the contouring component 42, the contouring component 42 further includes a contouring adjustment unit 423 for adjusting the spatial position of the contouring plate 421. In use, the contouring plate 421 is disposed between the third laser heater 41 and the electrode sheet and is located in the optical path of the laser beam. To ensure that the contouring plate 421 is in a set position to achieve the radiation heating effect on the irregularly shaped electrode sheet, the contouring plate 421 is connected to the contouring adjustment unit 423. The contouring adjustment unit 423 can adjust the spatial position of the contouring plate 421 to ensure that the laser beam can pass through the beam through-hole 422 of the contouring plate 421 and radiate onto the electrode sheet.

[0048] In an optimized implementation, when the heating component 4 includes the contouring component 42, the laser beam emitted by the third laser heater 41 irradiates the electrode sheet perpendicularly, and the surface of the contouring plate 421 is perpendicular to the optical axis of the laser beam, which facilitates the contouring and adjustment of the contouring plate 421.

[0049] In this embodiment, when the heating component 4 includes the contouring component 42, the contouring plate 421 is connected to the contouring adjustment unit 423. The contouring adjustment unit 423 can adjust the distance between the contouring plate 421 and the third laser heater 41 and the electrode sheet, that is, the contouring plate 421 can move in a direction parallel to the laser beam optical axis, and / or, the contouring plate 421 can move on a horizontal plane perpendicular to the laser beam optical axis under the action of the contouring adjustment unit 423, so that the laser beam can pass through the beam aperture 422 and the excess beam acts on the contouring plate 421.

[0050] The following implementation method is described with the third laser heater 41 and the contour plate 421 both located above the electrode sheet.

[0051] As one specific implementation, the contouring adjustment unit 423 includes a contouring lifting mechanism. The contouring plate 421 is connected to the contouring lifting mechanism to move closer to or further away from the third laser heater 41. Driven by the contouring lifting mechanism, the contouring plate 421 moves closer to or further away from the third laser heater 41, so that when the laser beam radiates onto the electrode sheet through the beam through-hole 422, its radiation shape is the same as the preset shape of the irregularly shaped electrode sheet.

[0052] As one specific embodiment, the contouring adjustment unit 423 includes a contouring translation mechanism for adjusting the horizontal position of the contouring plate 421. The horizontal position refers to a plane perpendicular to the optical axis, meaning the position of the contouring plate 421 can be adjusted on a plane perpendicular to the optical axis so that the laser beam can radiate onto the electrode sheet through the beam aperture.

[0053] In some embodiments, in order to ensure the accuracy of laser radiation, the contouring adjustment unit includes a contouring translation mechanism and a contouring lifting mechanism. The contouring lifting mechanism is disposed on the contouring translation mechanism and can drive the contouring plate to move in the X-axis, Y-axis and Z-axis directions, wherein the X-axis and Y-axis are horizontal movement directions and the Z-axis is vertical movement direction.

[0054] In an optimized implementation, the third laser heater 41 includes a laser head 411, with a contour plate 421 located at the output end of the laser head 411. The laser head 411 is connected to a laser adjustment mechanism 412 for driving it closer to or further away from the electrode sheet. Under the action of the laser adjustment mechanism, the laser head 411 can move along the laser beam optical axis to approach or move away from the electrode sheet, allowing the laser beam to be focused on the electrode sheet for radiative heating. The laser adjustment mechanism 412 can be used for focusing the third laser heater. Of course, both the first laser heater 43 and the second laser heater 44 are equipped with laser adjustment mechanisms for focusing.

[0055] In some embodiments, the contouring adjustment unit 423 establishes a signal interlock with the laser adjustment mechanism 412, and can adjust the contouring plate 421 according to the movement of the laser head 411.

[0056] In some embodiments, the contour plate 421 is further provided with a sensor for monitoring the position of the laser head 411, and then the spatial position of the contour plate 421 can be adjusted according to the obtained position of the laser head 411.

[0057] In an optimized implementation, when the heating component 4 includes the contouring component 42, the cooling mechanism includes a cooling medium channel disposed within the contouring plate 421. The cooling medium channel has a cooling medium inlet 424 and a cooling medium outlet 425 at both ends. Preferably, the cooling medium is cold water. By circulating and exchanging heat within the cooling medium channel, the temperature of the contouring plate 421 can be reduced, and the heat radiated onto the contouring plate 421 can be removed.

[0058] As one specific implementation, the cooling medium channel includes several medium flow channels, each of which surrounds the beam through-hole 422. Every two adjacent medium flow channels are connected, and all the medium flow channels form a cooling pipe. The inlet end of the cooling pipe is connected to the cooling medium inlet 424, and the outlet end of the cooling pipe is connected to the cooling medium outlet 425. Specifically, in this embodiment, the cooling medium is cold water, and cold water is used to flow through the medium flow channels for cooling. The inlet end of the cooling pipe is connected to the cooling medium supply device through the cooling medium inlet 424, and the outlet end of the cooling pipe is connected to the medium recovery device through the cooling medium outlet 425.

[0059] In an optimized implementation, when the heating component 4 includes the contouring component 42, the contouring plate 421 is an aluminum alloy contouring plate. The aluminum alloy contouring plate has good thermal conductivity, which facilitates heat exchange and allows cooling water to cool the contouring plate.

[0060] The above three methods achieve radiative heating of irregularly shaped electrode sheets by different settings of the laser heater. Other structures are the same in the three methods, and will be described uniformly below.

[0061] In an optimized implementation, the heating components 4 consist of two sets, which are respectively disposed on both sides of the electrode running channel and are used to irradiate the AB side (i.e., the front and back sides) of the electrode sheet. The front and back sides of the electrode sheet are separated by a substrate. One set of heating components 4 irradiates the front side of the electrode sheet, and the other set of heating components 4 irradiates the back side of the electrode sheet. The two sets of heating components 4 are staggered along the electrode running channel.

[0062] In an optimized implementation, the heating system further includes an unwinding drive mechanism 2, located downstream of the unwinding unit 1, for driving the unwinding of the unwinding unit 1 and controlling the unwinding speed of the unwinding unit 1. The heating system also includes a winding drive mechanism 7, located upstream of the winding unit 8, for driving the winding of the winding unit 8 and controlling the winding speed of the winding unit 8. In this application, upstream and downstream are relative to the running direction of the electrode sheet.

[0063] In an optimized implementation, a plurality of roller assemblies 6 for guiding the electrode strip 3 are also provided between the unwinding unit 1 and the winding unit 8. The roller assemblies 6 can tension the electrode strip 3.

[0064] In an optimized implementation, the first, second, and third laser heaters are preferably fiber lasers, and the wavelength, power, and other parameters of the lasers are set as needed. By adjusting or changing the laser power, the electrode speed can be adjusted for laser heating, achieving rapid heating of the electrode and improving processing efficiency. The lasers include, but are not limited to, semiconductor lasers, gas lasers, and other types of lasers.

[0065] As per the instruction manual Figure 11 As shown, in order to meet the radiation heating of various irregularly shaped electrode sheets on the electrode strip surface, each heating assembly includes several heating units arranged along the electrode running direction and the electrode strip width direction. Each heating unit adopts one of the above three methods (i.e., the first laser heater, the second laser heater, or the third laser heater) to radiate the irregularly shaped electrode sheets on the entire electrode strip surface to meet the heating requirements.

[0066] As per the instruction manual Figure 12 As shown, the heating system also includes a temperature controller 9, preferably an infrared digital temperature controller, used to collect the temperature of the illumination area of ​​the electrode strip 3 and feed the collected temperature back to the heating component 4. The heating component 4 is also used to control the intensity of the output laser based on the temperature of the illumination area of ​​the electrode strip 3, so that the temperature of the illumination area of ​​the electrode strip 3 is within a preset range. The temperature controller 9 and the heating component 4 are integrated into one unit to realize temperature control and digital feedback from the heating component 4, which is beneficial to the consistency and controllability of the temperature inside and outside the electrode.

[0067] As per the instruction manual Figure 13 The diagram shown is a structural schematic of another type of temperature controller.

[0068] In an optimized implementation, the heating system further includes two exhaust gas removal units 5, which are arranged in a one-to-one correspondence with the two heating components 4, and are used to remove exhaust gas from the heating components 4 on the front and back sides of the electrode sheet, respectively.

[0069] In the above embodiment, the exhaust gas removal unit 5 collects the exhaust gas generated by the laser irradiation of the electrode plate by suction negative pressure, and treats the exhaust gas through the internal filtration system of the exhaust gas removal unit 5. The exhaust gas suction rate is the normal suction rate, which should be such that the electrode plate does not vibrate. The exhaust gas suction rate can be observed and finely adjusted on site. Specifically, the internal suction rate of the exhaust gas removal unit 5 is 15 m / s, the air volume is 105 m³ / h, and the external suction rate is 1~3 m / s.

[0070] Specifically, the adsorption end of the waste gas removal unit 5 is equipped with a cover that can be placed on the electrode strip to adsorb the generated waste gas in a timely manner and prevent waste gas leakage.

[0071] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0072] Those skilled in the art will understand that this invention can be implemented in many other specific forms without departing from the spirit and scope of this invention. Although embodiments of this invention have been described, it should be understood that this invention is not limited to these embodiments, and those skilled in the art can make changes and modifications within the spirit and scope of this invention as defined in the appended claims.

Claims

1. A heating system for heating irregularly shaped electrode sheets, comprising an unwinding unit, a winding unit, and a heating assembly, wherein an electrode sheet running channel is formed between the winding unit and the unwinding unit, and the heating assembly is disposed beside the electrode sheet running channel, characterized in that: The heating assembly includes a first laser heater, wherein the shape of the first laser beam emitted by the first laser heater is the same as the shape of the irregularly shaped electrode sheet to be heated. Alternatively, the heating assembly includes multiple second laser heaters, which are arranged adjacent to each other and whose emitted second laser beams overlap to form a laser beam group with the same shape as the irregular electrode sheet to be heated; Alternatively, the heating assembly may include a contouring assembly and a third laser heater for outputting a third laser beam. The contouring assembly may include a contouring plate with a beam through-hole that has the same shape as the irregularly shaped electrode sheet to be heated. The beam through-hole is located in the optical path of the laser beam and the laser beam at its location can completely cover the beam through-hole. The contouring plate may be equipped with a cooling mechanism for cooling its plate body.

2. The heating system for heating irregularly shaped electrode sheets according to claim 1, characterized in that, When the heating assembly includes the contouring assembly, the contouring assembly includes multiple contouring plates adapted to various irregularly shaped electrode sheets, and the third laser heater is selectively matched with one of the contouring plates.

3. The heating system for heating irregularly shaped electrode sheets according to claim 1, characterized in that, When the heating assembly includes the contouring assembly, the contouring assembly further includes a contouring adjustment unit for adjusting the spatial position of the contouring plate.

4. The heating system for heating irregularly shaped electrode sheets according to claim 3, characterized in that, The contouring adjustment unit includes a contouring lifting mechanism, and the contouring plate is connected to the contouring lifting mechanism to move closer to or further away from the third laser heater.

5. The heating system for heating irregularly shaped electrode sheets according to claim 3, characterized in that, The contouring adjustment unit includes a contouring translation mechanism for adjusting the horizontal position of the contouring plate.

6. The heating system for heating irregularly shaped electrode sheets according to claim 1, characterized in that, When the heating assembly includes the contouring assembly, the surface of the contouring plate is perpendicular to the optical axis of the third laser beam.

7. The heating system for heating irregularly shaped electrode sheets according to claim 1, characterized in that, When the heating component includes the contouring component, the cooling mechanism includes a cooling medium channel disposed within the contouring plate, and the two ends of the cooling medium channel are respectively provided with a cooling medium inlet and a cooling medium outlet.

8. The heating system for heating irregularly shaped electrode sheets according to claim 7, characterized in that, The cooling medium channel includes several medium flow channels, each of which surrounds the beam aperture. Every two adjacent medium flow channels are connected and all the medium flow channels form a cooling pipe. The inlet end of the cooling pipe is connected to the cooling medium inlet, and the outlet end of the cooling pipe is connected to the cooling medium outlet.

9. The heating system for heating irregularly shaped electrode sheets according to claim 1, characterized in that, The heating components are in two sets, and the two sets of heating components are respectively arranged on both sides of the electrode running channel.

10. The heating system for heating irregularly shaped electrode sheets according to claim 1, characterized in that, It also includes an exhaust gas removal unit, which is arranged adjacent to the heating component.

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