Cooling device, laser cleaning machine and laser cleaning system

Abstract

The utility model discloses a cooling device, a laser cleaning machine and a laser cleaning system, the cooling device comprises a cooling plate, and a cooling passage is arranged in the cooling plate; the top face of the cooling plate is used for being attached to an adsorption plate of the laser cleaning machine or adsorption holes are integrated in the top face of the cooling plate, the cooling plate has the length direction and the width direction, and the top face of the cooling plate is provided with a main cooling area and an auxiliary cooling area which are distributed in the length direction of the cooling plate. The arrangement density of the cooling passages of the main cooling area is greater than that of the cooling passages of the auxiliary cooling area, the upper part of the main cooling area corresponds to a to-be-cleaned part on a pole piece material belt, and the upper part of the auxiliary cooling area corresponds to a non-cleaned part on the pole piece material belt or an exposed part on the adsorption plate. According to the cooling device, the laser cleaning machine and the laser cleaning system, the cooling capacity can be improved, and the cooling requirement can be met.

Description

Technical Field

[0001] This utility model relates to the technical field of battery cell processing, and in particular to a cooling device, a laser cleaning machine, and a laser cleaning system. Background Technology

[0002] A laser cleaning system is a device that uses lasers to clean electrodes. It mainly includes a laser cleaning machine, which typically includes an electrode unwinding mechanism, an electrode winding mechanism, a cleaning platform located between the electrode unwinding mechanism and the electrode winding mechanism, and a laser generator located above the cleaning platform. The cleaning platform has an adsorption plate and a cooling plate located at the bottom of the adsorption plate.

[0003] During the operation of the laser cleaning system, the electrode unwinding mechanism releases the electrode strip, which moves to the cleaning platform. Then, the adsorption plate adsorbs and fixes the electrode strip. Next, the laser generator irradiates the electrode strip according to the program settings. At the same time, the cooling plate works to cool the electrode strip by cooling the adsorption plate. After cleaning is completed, the adsorption plate releases its adsorption, and the electrode strip moves to the electrode winding mechanism to rewind the electrode strip.

[0004] However, the existing cooling plates have limited cooling capacity and cannot meet the needs of use. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a cooling device that can improve cooling capacity and meet cooling needs.

[0006] This utility model also proposes a laser cleaning machine with the above-mentioned cooling device.

[0007] This utility model also proposes a laser cleaning system having the above-mentioned cooling device or the above-mentioned laser cleaning machine.

[0008] According to a first aspect of the present invention, the cooling device includes a cooling plate, and a cooling passage is provided in the cooling plate.

[0009] The top surface of the cooling plate is used to attach to the adsorption plate of the laser cleaning machine, or the top surface of the cooling plate is integrated with adsorption holes. The cooling plate has a length direction and a width direction. The top surface of the cooling plate has a main cooling area and a secondary cooling area distributed along its own length direction. The arrangement density of the cooling channels in the main cooling area is greater than that in the secondary cooling area. The area above the main cooling area corresponds to the part to be cleaned on the electrode strip, and the area above the secondary cooling area corresponds to the non-cleaned part on the electrode strip or the exposed part on the adsorption plate.

[0010] The cooling device according to the embodiments of the present invention has at least the following beneficial effects:

[0011] This invention features a main cooling zone and a secondary cooling zone. The main cooling zone cools areas with high heat generation, absorbing a large amount of heat and effectively reducing the temperature. In other words, the main cooling zone cools the areas undergoing laser cleaning, removing heat promptly and reducing temperature differences, especially avoiding periods of high temperature. The secondary cooling zone, on the other hand, takes care of areas with lower heat generation, resulting in a more uniform and lower overall temperature of the cleaning platform to meet cleaning requirements. Simultaneously, it ensures a uniform and consistent internal temperature for the entire laser cleaning machine, reducing temperature differences and ensuring stable operation.

[0012] This invention increases the density of cooling passages in the main cooling zone compared to the secondary cooling zone. Structurally, this results in a larger heat exchange area in the main cooling zone than in the secondary cooling zone, ensuring that the cooling capacity of the main cooling zone is greater than that of the secondary cooling zone. Consequently, the supply to the main and secondary cooling zones is simplified. For example, the cooling medium can flow directly through both zones without requiring separate adjustments to flow rate or velocity, thus reducing the difficulty of application or use.

[0013] This utility model also provides a laser cleaning machine, which has the above-mentioned beneficial effects.

[0014] This invention also provides a laser cleaning system, which has the aforementioned beneficial effects.

[0015] According to a first aspect of the present invention, the cooling device located in the main cooling zone includes a plurality of first cooling channels, which are arranged side by side and along the length of the cooling plate.

[0016] According to a first aspect of the present invention, the cooling device has a first process hole coaxial with the first cooling channel on the side of the cooling plate, and the first process hole can be used to install a plug or a connecting connector.

[0017] According to a first aspect of the present invention, the cooling passage located in the main cooling zone further includes a first feed channel and a first discharge channel, the first feed channel and the first discharge channel extending along the length direction of the cooling plate, a plurality of first cooling channels located between the first feed channel and the first discharge channel, and the two ends of the plurality of first cooling channels respectively connected to the first feed channel and the first discharge channel.

[0018] According to a first aspect of the present invention, the cooling device has a second process hole coaxial with the first feed channel and a third process hole coaxial with the first discharge channel on the side of the cooling plate. The second process hole and the third process hole are located on the side of the main cooling zone away from the secondary cooling zone. The second process hole can be used to install a plug or a connecting connector.

[0019] According to a first aspect of the present invention, the cooling device located in the secondary cooling zone includes a second cooling channel that connects to the first feed channel and extends along the length of the cooling plate, and a third cooling channel that connects to the first discharge channel and extends along the length of the cooling plate.

[0020] According to a first aspect of the present invention, the cooling device located in the secondary cooling zone includes a second cooling channel and a third cooling channel extending along the length direction of the cooling plate, the second cooling channel and the third cooling channel being arranged opposite to each other along the width direction of the cooling plate.

[0021] According to a first aspect of the present invention, the cooling plate is provided with an inlet and an outlet that communicate with the cooling passage. The inlet and the outlet are located on the side of the secondary cooling zone away from the main cooling zone. The cooling medium of the cooling passage enters the secondary cooling zone through the inlet, flows from the secondary cooling zone to the main cooling zone, flows back from the main cooling zone to the secondary cooling zone, and is discharged through the outlet.

[0022] The laser cleaning machine according to a second aspect of the present invention includes the cooling device described in any one of the above claims, wherein the cooling medium in the cooling passage is cooling gas.

[0023] The laser cleaning system according to a third aspect of the present invention includes the cooling device described in any one of the above claims, or includes the laser cleaning machine described in the above claims.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of 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.

[0026] Figure 1This is a schematic diagram of the cooling device according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A cross-sectional view of the cooling device.

[0028] Reference numerals: Cooling plate 100; Main cooling zone 110; Secondary cooling zone 120; First cooling channel 130; First process hole 140; First feed channel 150; First discharge channel 160; Second cooling channel 170; Third cooling channel 180; Feed interface 190; Discharge interface 200; Adsorption hole 210. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, this is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The cooling device, laser cleaning machine, and laser cleaning system according to embodiments of the present invention are described below with reference to the accompanying drawings.

[0034] Reference Figure 1 The present invention aims to provide an embodiment of a cooling device, which may be part of a laser cleaning machine. Therefore, the present invention also aims to provide an embodiment of a laser cleaning machine that includes a cooling device. In addition, the laser cleaning machine may also be part of a laser cleaning system. Therefore, the present invention also aims to provide an embodiment of a laser cleaning system that includes a laser cleaning machine.

[0035] In this embodiment, the laser cleaning machine typically includes an electrode unwinding mechanism, an electrode winding mechanism, a cleaning platform disposed between the electrode unwinding mechanism and the electrode winding mechanism, and a laser generator located above the cleaning platform. The cleaning platform may have an adsorption plate and a cooling plate 100 located at the bottom of the adsorption plate.

[0036] When the laser cleaning system or laser cleaning machine is running, the electrode unwinding mechanism releases the electrode strip, which moves to the cleaning platform. Then, the adsorption plate adsorbs and fixes the electrode strip. Next, the laser generator irradiates the electrode strip according to the program settings. At the same time, the cooling plate 100 works to cool the electrode strip by cooling the adsorption plate. After cleaning is completed, the adsorption plate releases its adsorption, and the electrode strip moves to the electrode winding mechanism to rewind the electrode strip.

[0037] Then, the existing cooling plate 100 has limited cooling capacity and is difficult to meet the cooling needs. In other words, the existing cooling solution is only able to cool the laser cleaning position and lacks the ability to cool other positions, resulting in large temperature differences inside the laser cleaning machine and making it difficult to meet the need to keep the electrode strip in a low-temperature environment.

[0038] Therefore, referring to Figure 1 and Figure 2 This embodiment also aims to provide a cooling device that can improve cooling capacity, not only cooling the laser cleaning area but also cooling other areas to meet cooling needs.

[0039] In this embodiment, the cooling device includes a cooling plate 100, and a cooling passage is provided in the cooling plate 100. The cooling medium in the cooling passage can be cooling gas, cooling water or cooling liquid.

[0040] The top surface of the cooling plate 100 is used to attach the adsorption plate of the laser cleaning machine, or the top surface of the cooling plate 100 is integrated with adsorption holes 210.

[0041] The top surface of the cooling plate 100 is used to attach the adsorption plate of the laser cleaning machine. It can be considered that the cooling plate 100 and the adsorption plate are two plates that perform different functions.

[0042] The integration of adsorption holes 210 on the top surface of the cooling plate 100 can be interpreted as the cooling plate 100 and the adsorption plate being a single plate integrating both cooling and adsorption functions. Figure 2 As shown.

[0043] It is generally accepted that the adsorption gas path and the cooling path should not be connected to each other to avoid mutual interference between the cooling function and the adsorption function.

[0044] In this embodiment, the cooling plate 100 has a length direction and a width direction. The top surface of the cooling plate 100 has a main cooling area 110 and a secondary cooling area 120 distributed along its own length direction. The arrangement density of the cooling passages in the main cooling area 110 is greater than that in the secondary cooling area 120. The area above the main cooling area 110 corresponds to the part to be cleaned on the electrode strip, and the area above the secondary cooling area 120 corresponds to the non-cleaned part on the electrode strip or the exposed part on the adsorption plate.

[0045] In summary, by setting up a main cooling zone 110 and a secondary cooling zone 120, the main cooling zone 110 can cool the parts with high heat generation, absorb a large amount of heat, and effectively reduce the temperature. That is, the main cooling zone 110 can cool the area being laser cleaned, remove heat in time, reduce temperature differences, and especially avoid high-temperature periods. The secondary cooling zone 120 can also take care of the areas with lower heat generation, so that the overall temperature of the cleaning platform is uniform and low, meeting the cleaning needs. At the same time, it also makes the internal temperature of the entire laser cleaning machine uniform and consistent, reduces temperature differences, and ensures the stable operation of the laser cleaning machine.

[0046] This invention increases the density of cooling passages in the main cooling zone 110 compared to the secondary cooling zone 120. Structurally, this results in a larger heat exchange area in the main cooling zone 110 compared to the secondary cooling zone 120, ensuring that the cooling capacity of the main cooling zone 110 is greater than that of the secondary cooling zone 120. Consequently, the supply to the main cooling zone 110 and the secondary cooling zone 120 is simplified. For example, the cooling medium can flow directly through the main cooling zone 110 and the secondary cooling zone 120 without the need to adjust the flow rate or velocity separately, thus reducing the difficulty of application or use.

[0047] When the cooling medium is cooling gas, on the one hand, the water content in the cooling path can be reduced, thus reducing the harm caused by water leakage. On the other hand, water circulation or water recycling equipment can be eliminated, reducing space occupation and manufacturing costs.

[0048] This embodiment uses cooling gas as the cooling medium, but it can also be applied to situations where the cooling medium is cooling water or coolant.

[0049] In some specific embodiments of this utility model, the cooling passage located in the main cooling zone 110 may include a plurality of first cooling channels 130, the plurality of first cooling channels 130 being arranged side by side, and the plurality of first cooling channels 130 being arranged along the length direction of the cooling plate 100.

[0050] It is easy to understand that in this embodiment, by setting multiple first cooling channels 130, the multiple first cooling channels 130 can be arranged into a surface to achieve regional cooling. At the same time, the first cooling channels 130 can be formed by drilling or casting, reducing the manufacturing difficulty.

[0051] Moreover, the first cooling channel 130 is relatively short, making it easier to manufacture and allowing for easy interconnection.

[0052] In some specific embodiments of this utility model, the side of the cooling plate 100 may be provided with a first process hole 140 coaxial with the first cooling channel 130, and the first process hole 140 can be used to install a plug or a connecting connector.

[0053] It is easy to understand that, in this embodiment, by providing the first process hole 140, the first cooling channel 130 can be easily machined by drilling or casting.

[0054] At the same time, it also facilitates the selective blocking of certain first cooling channels 130, allowing the airflow to flow back and forth in a zigzag pattern, so that the airflow can fully exchange heat as it passes through each first cooling channel 130.

[0055] At the same time, it also facilitates the simultaneous flow of cooling medium from one end of several first cooling channels 130 to the other end of several first cooling channels 130. Therefore, the temperature difference in each first cooling channel 130 is consistent, thus enabling balanced heat dissipation and reducing temperature differences within the main cooling zone 110.

[0056] In some specific embodiments of this utility model, the first cooling channel 130 can extend along the length direction of the cooling plate 100, and multiple first cooling channels 130 can be arranged along the width direction of the cooling plate 100. Therefore, the number of first cooling channels 130 is small and the first cooling channels 130 are relatively long, which can meet different usage needs. In terms of manufacturing, a horizontal machining center may be needed to form the first cooling channel 130.

[0057] In some specific embodiments of this utility model, the cooling passage located in the main cooling zone 110 may further include a first feed channel 150 and a first discharge channel 160. The first feed channel 150 and the first discharge channel 160 extend along the length direction of the cooling plate 100. A plurality of first cooling channels 130 are located between the first feed channel 150 and the first discharge channel 160, and the two ends of the plurality of first cooling channels 130 are respectively connected to the first feed channel 150 and the first discharge channel 160.

[0058] It is easy to understand that in this embodiment, by setting a first feed channel 150 and a second feed channel, the airflow will enter through the first feed channel 150, and then the airflow will be distributed to each of the first cooling channels 130. After flowing out from the first cooling channel 130, it will flow back to the first discharge channel 160, reducing the arrangement of external pipelines and making the laser cleaning machine layout simpler.

[0059] In some specific embodiments of this utility model, the cooling device may include a vortex cooling tube, which can directly generate a cooling medium without the need to connect to an external cold air generating device.

[0060] In some specific embodiments of this utility model, the first discharge channel 160 can directly discharge the heat-exchanged cold air into the interior of the laser cleaning machine to absorb the heat contained in the air inside the laser cleaning machine.

[0061] In some specific embodiments of this utility model, the side of the cooling plate 100 may be provided with a second process hole coaxial with the first feed channel 150 and a third process hole coaxial with the first discharge channel 160. The second process hole and the third process hole are located on the side of the main cooling zone 110 away from the secondary cooling zone 120. The second process hole can be used to install a plug or a connecting connector.

[0062] It is easy to understand that this embodiment can meet the manufacturing requirements of processing the first feed channel 150 and the first discharge channel 160 by setting the second process hole and the third process hole. At the same time, it can also meet the sealing requirements or airflow requirements by installing plugs or connecting joints. The structure is simple and optimized.

[0063] exist Figure 1 and Figure 2 In the design, the second and third process holes were not used, and therefore, they are not shown in the diagram.

[0064] In some specific embodiments of this utility model, the cooling passage located in the secondary cooling zone 120 may include a second cooling passage 170 that connects to the first feed passage 150 and extends along the length of the cooling plate 100, and a third cooling passage 180 that connects to the first discharge passage 160 and extends along the length of the cooling plate 100.

[0065] It is easy to understand that, in this embodiment, by setting the second cooling channel 170 and the third cooling channel 180, a secondary cooling zone 120 can be formed to meet the cooling needs of the secondary cooling zone 120. At the same time, the second cooling channel 170 can be an extension of the first feed channel 150, and the third cooling channel 180 can be an extension of the first discharge channel 160. Therefore, in manufacturing, the original cutting tools and fixtures can be used to reduce the manufacturing difficulty, or the first feed channel 150, the first discharge channel 160, the second cooling channel 170 and the third cooling channel 180 can be directly cast to simplify the mold structure.

[0066] In some specific embodiments of this utility model, the cooling passage located in the secondary cooling zone 120 may include a second cooling channel 170 and a third cooling channel 180 extending along the length direction of the cooling plate 100, and the second cooling channel 170 and the third cooling channel 180 are arranged opposite to each other along the width direction of the cooling plate 100.

[0067] It is easy to understand that, in this embodiment, by arranging the second cooling channel 170 and the third cooling channel 180 opposite each other along the width direction of the cooling plate 100, the second cooling channel 170 and the third cooling channel 180 are positioned at the edge of the cooling plate 100, which facilitates cooling of the edge of the cooling plate 100 to absorb the heat around the laser cleaning heating platform.

[0068] In some specific embodiments of this utility model, the cooling plate 100 may be provided with a feed inlet 190 and a discharge inlet 200 that connect to the cooling passage. The feed inlet 190 and the discharge inlet 200 are located on the side of the secondary cooling zone 120 away from the main cooling zone 110. The cooling medium of the cooling passage enters the secondary cooling zone 120 through the feed inlet 190, flows from the secondary cooling zone 120 to the main cooling zone 110, flows back from the main cooling zone 110 to the secondary cooling zone 120, and is discharged through the discharge inlet 200.

[0069] It is easy to understand that by setting the feed port 190 and the discharge port 200 on the side of the secondary cooling zone 120 away from the main cooling zone 110, this embodiment can keep the pipelines and other parts away from the laser cleaning area without affecting the arrangement of the laser cleaning area.

[0070] Meanwhile, in this embodiment, the size ratio or boundary of the main cooling zone 110 and the secondary cooling zone 120 can be changed by increasing the number of first cooling channels 130, which is applicable to electrode strips of different specifications and is easy to use.

[0071] Meanwhile, in this embodiment, the size ratio or boundary of the main cooling zone 110 and the secondary cooling zone 120 can be changed by blocking different first cooling channels 130, thereby reducing subsequent processing and modification.

[0072] Figure 2 The cooling path shown is a convenient manufacturing implementation, but the cooling path in this embodiment can also be in other forms to meet different cooling needs. At the same time, the cooling path can be formed directly on the cooling plate 100, or it can be formed by laying pipes between two plates, and there are many ways to do so.

[0073] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0075] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0076] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0077] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0078] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. Cooling device, characterized in that The cooling device comprises a cooling plate (100) provided with cooling channels; The top surface of the cooling plate (100) is used to adhere to the adsorption plate of the laser cleaning machine or the top surface of the cooling plate (100) is integrated with adsorption holes (210), the cooling plate (100) has a length direction and a width direction, the top surface of the cooling plate (100) has a main cooling area (110) and a secondary cooling area (120) distributed along the length direction thereof, the arrangement density of the cooling channels of the main cooling area (110) is greater than that of the secondary cooling area (120), the upper side of the main cooling area (110) corresponds to the part to be cleaned on the pole piece strip, and the upper side of the secondary cooling area (120) corresponds to the non-cleaning part on the pole piece strip or the exposed part on the adsorption plate.

2. Cooling device according to claim 1, characterized in that The cooling channels located in the main cooling area (110) comprise a plurality of first cooling channels (130), the plurality of first cooling channels (130) are arranged side by side, and the plurality of first cooling channels (130) are arranged along the length direction of the cooling plate (100).

3. Cooling device according to claim 2, characterized in that The side edge of the cooling plate (100) is provided with a first process hole (140) coaxial with the first cooling channel (130), and the first process hole (140) can be provided with a plug or a communication joint.

4. Cooling device according to claim 2, characterized in that The cooling channels located in the main cooling area (110) further comprise a first feeding channel (150) and a first discharging channel (160), the first feeding channel (150) and the first discharging channel (160) extend along the length direction of the cooling plate (100), the plurality of first cooling channels (130) are located between the first feeding channel (150) and the first discharging channel (160), and the two ends of the plurality of first cooling channels (130) are respectively communicated with the first feeding channel (150) and the first discharging channel (160).

5. Cooling device according to claim 4, characterized in that The side edge of the cooling plate (100) is provided with a second process hole coaxial with the first feeding channel (150) and a third process hole coaxial with the first discharging channel (160), the second process hole and the third process hole are located on the side of the main cooling area (110) away from the secondary cooling area (120), and the second process hole can be provided with a plug or a communication joint.

6. Cooling device according to claim 4, characterized in that The cooling channels located in the secondary cooling area (120) comprise a second cooling channel (170) communicated with the first feeding channel (150) and extending along the length direction of the cooling plate (100) and a third cooling channel (180) communicated with the first discharging channel (160) and extending along the length direction of the cooling plate (100).

7. The cooling device of claim 1, wherein The cooling channels located in the secondary cooling area (120) comprise a second cooling channel (170) and a third cooling channel (180) extending along the length direction of the cooling plate (100), and the second cooling channel (170) and the third cooling channel (180) are oppositely arranged along the width direction of the cooling plate (100).

8. The cooling device of claim 1, wherein, The cooling plate (100) is provided with an inlet interface (190) and an outlet interface (200) communicating with the cooling channel, the inlet interface (190) and the outlet interface (200) are located on the side of the secondary cooling area (120) away from the primary cooling area (110), the cooling medium of the cooling channel enters the secondary cooling area (120) through the inlet interface (190), flows from the secondary cooling area (120) to the primary cooling area (110), flows back to the secondary cooling area (120) from the primary cooling area (110), and is discharged through the outlet interface (200).

9. Laser cleaning machine, characterized in that The cooling device of any one of claims 1 to 8, wherein the cooling medium in the cooling channel is cooling gas.

10. A laser cleaning system characterized by, The cooling device of any one of claims 1 to 8, or the laser cleaning machine of claim 9.

Images