Method for using laser devices and production line

Abstract

A method for using laser devices (10), comprising the following steps: S1, dividing a plurality of laser devices (10) into a first laser group and a second laser group, and turning on laser devices (10) in the first laser group to process an electrode sheet (11); S2, when the temperature value of either of galvanometers and field lenses of the laser devices (10) in the first laser group reaches a set value, turning off the laser devices (10) in the first laser group, and at the same time turning on laser devices (10) in the second laser group to continue processing the electrode sheet (11); S3, when the temperature value of either of galvanometers and field lenses of the laser devices (10) in the second laser group reaches a set value, turning off the laser devices (10) in the second laser group, and at the same time turning on the laser devices (10) in the first laser group to continue processing the electrode sheet (11); and S4, repeating steps S2 and S3.

Description

Laser equipment usage and production line

[0001] This application claims priority to Chinese patent application No. 202311237567.6 filed on September 21, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of battery processing equipment, and in particular to a method for using laser equipment and a production line. Background Art

[0003] In related technologies, when processing the electrode, grooving the electrode with a laser device can improve the charging and discharging efficiency of the battery cell (the electrode is formed into a battery cell by winding or stacking).

[0004] To ensure production efficiency on the production line meets demand, the laser equipment will run for extended periods to slot the electrode. However, the prolonged passage of laser light through the galvanometer and field mirrors can cause these mirrors to heat up, leading to issues such as temperature drift, larger beam spots, and reduced energy. This can further contribute to substandard slotting quality. To ensure quality, the laser equipment is shut down for a period of time to cool the galvanometer and field mirror temperatures. However, this downtime can lead to low production efficiency. Technical issues

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a method for using a laser device, which can ensure high-quality grooving of a pole piece by the laser device and improve the production efficiency of the production line. Technical Solutions

[0006] This application also proposes a production line.

[0007] The laser device use method according to the first aspect of the present application is used in a production line, wherein the production line includes a plurality of laser devices, and the laser devices are used to process pole pieces. The laser device use method includes the following steps:

[0008] S1, dividing a plurality of laser devices into a first laser group and a second laser group, turning on the laser devices in the first laser group and processing the pole piece;

[0009] S2, when any temperature value of the galvanometer mirror and the field mirror of the laser device in the first laser group reaches a set value, turning off the laser device in the first laser group, and simultaneously turning on the laser device in the second laser group to continue processing the electrode;

[0010] S3, when any temperature value of the galvanometer mirror and the field mirror of the laser device in the second laser group reaches a set value, turning off the laser device in the second laser group, and simultaneously turning on the laser device in the first laser group to continue processing the electrode; and

[0011] S4. Repeat steps S2 to S3.

[0012] The method for using the laser device according to the embodiment of the present application has at least the following beneficial effects: the first laser group includes multiple laser devices, the second laser group includes multiple laser devices, and the laser devices in the first laser group are used to process the pole piece, such as grooving the pole piece. Afterwards, when any temperature value of the galvanometer or field mirror of the laser device in the first laser group reaches the set value, the laser device in the first laser group is turned off, which can protect the galvanometer and field mirror of the laser device in the first laser group and prevent the galvanometer and field mirror from reducing the processing quality of the pole piece. At the same time, the laser device in the second laser group is turned on to continue processing the pole piece, which can The electrode is processed continuously to improve production efficiency; further, when any temperature value of the galvanometer or field mirror of the laser device in the second laser group reaches the set value, the laser device in the second laser group is turned off, which can protect the galvanometer and field mirror of the laser device in the second laser group and prevent the galvanometer and field mirror from reducing the processing quality of the electrode. At the same time, the laser device in the first laser group is turned on to continue processing the electrode, which can continuously process the electrode and improve production efficiency; in this way, by switching the laser devices in the first laser group and the second laser group, the electrode is processed continuously, which can make the production line more efficient. Specifically, the method of using the laser equipment can ensure that the laser equipment has a high quality of grooving on the electrode and can also make the production line more efficient.

[0013] According to the laser device use method of some embodiments of the present application, in step S2, the laser device use method further includes the step of cooling the galvanometer and the field mirror of the laser device in the first laser group after shutting down the laser device of the first laser group.

[0014] According to the laser device use method of some embodiments of the present application, the galvanometer mirror and the field mirror are cooled by water cooling or air cooling.

[0015] According to the laser device use method of some embodiments of the present application, in step S3, the laser device use method further includes the step of cooling the galvanometer and the field mirror of the laser device in the second laser group after turning off the laser device of the second laser group.

[0016] According to the laser device use method of some embodiments of the present application, in step S1, when the laser device in the first laser group is turned on and the pole piece is processed, the galvanometer and the field mirror in the laser device are cooled at the same time.

[0017] According to the laser device use method of some embodiments of the present application, in step S2, when the laser device in the second laser group is turned on and the pole piece is processed, the galvanometer and the field mirror in the laser device are cooled at the same time.

[0018] The production line according to the second embodiment of the present application includes:

[0019] The first laser group and the second laser group each include a plurality of laser devices, and the laser devices are used to process the pole piece;

[0020] A temperature sensor, used to detect the temperature of the galvanometer and field mirror in the laser device;

[0021] A controller is connected to the first laser group, the second laser group, and the temperature sensor, and is used to receive and send signals. The controller is configured to:

[0022] When it is detected that the temperature of any one of the galvanometer mirror and the field mirror in the first laser group reaches a set value, turning off the laser device in the first laser group and turning on the laser device in the second laser group; and

[0023] When it is detected that any temperature value of the galvanometer mirror and the field mirror in the second laser group reaches a set value, the laser device in the second laser group is turned off, and the laser device in the first laser group is turned on at the same time.

[0024] The production line according to the embodiment of the present application has at least the following beneficial effects: the first laser group includes a plurality of laser devices, the second laser group includes a plurality of laser devices, the electrode is processed by the laser device in the first laser group, such as grooving the electrode, and then the temperature value of the galvanometer and the field mirror of the laser device in the first laser group is detected by the temperature sensor. When the temperature sensor detects that any temperature value of the galvanometer or the field mirror of the laser device in the first laser group reaches the set value, the temperature sensor sends a signal to the controller, and the controller turns off the laser device in the first laser group, which can protect the galvanometer and the field mirror of the laser device in the first laser group and prevent the processing quality of the electrode by the galvanometer and the field mirror from being reduced. At the same time, the controller turns on the laser in the second laser group. The equipment continues to process the pole piece, which can process the pole piece uninterruptedly and improve production efficiency; further, when the temperature sensor detects that any temperature value of the galvanometer or field mirror of the laser device in the second laser group reaches the set value, the temperature sensor sends a signal to the controller, and the controller turns off the laser device in the second laser group, which can protect the galvanometer and field mirror of the laser device in the second laser group and prevent the galvanometer and field mirror from reducing the processing quality of the pole piece. At the same time, the controller turns on the laser device in the first laser group to continue processing the pole piece, which can process the pole piece uninterruptedly and improve production efficiency; in this way, by switching the laser devices in the first laser group and the second laser group, the pole piece can be processed uninterruptedly, which can make the production line more efficient. Specifically, the method of using the laser equipment can ensure that the laser equipment has a high quality of grooving on the pole piece, and can also make the production line more efficient.

[0025] According to the production line of some embodiments of the present application, the laser device includes a first cooling member, the first cooling member is thermally connected to the galvanometer, the first cooling member is provided with a first cooling channel, and the first cooling channel is used for the flow of cooling medium.

[0026] According to the production line of some embodiments of the present application, the laser device includes a second cooling member, the second cooling member is thermally connected to the field lens, the second cooling member is provided with a second cooling channel, and the second cooling channel is used for the flow of cooling medium.

[0027] According to the production line of some embodiments of the present application, the production line further includes a conveying device, which is used to convey the pole piece. Along the conveying direction of the pole piece, the laser devices in the first laser group and the laser devices in the second laser group are alternately arranged. Beneficial effects

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0030] FIG1 is a flow chart of a method for using a laser device according to some embodiments of the present application;

[0031] FIG2 is a schematic diagram of a laser device in a production line according to some embodiments of the present application;

[0032] FIG3 is a schematic diagram of a production line according to some embodiments of the present application.

[0033] Reference numerals:

[0034] Production line 9, laser equipment 10, pole piece 11, unwinding device 12, driven roller 13, dust cleaning device 14, tension device 15, winding device 16;

[0035] a first laser device 100 , a fifth laser device 200 , a second laser device 300 , a sixth laser device 400 , a third laser device 500 , a seventh laser device 600 , a fourth laser device 700 , and an eighth laser device 800 . Modes for Carrying Out the Invention

[0036] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0037] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0038] In the description of this application, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0039] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0040] In the description of this application, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0041] Referring to FIG. 1 , in some embodiments, a method for using a laser device is used in a production line 9 , which includes a plurality of laser devices 10 , each of which is used to process a pole piece 11 . The method for using the laser device includes the following steps:

[0042] S1, dividing the multiple laser devices 10 into a first laser group and a second laser group, turning on the laser devices 10 in the first laser group and processing the pole piece 11;

[0043] S2, when any temperature value of the galvanometer mirror and the field mirror of the laser device 10 in the first laser group reaches a set value, the laser device 10 in the first laser group is turned off, and the laser device 10 in the second laser group is turned on to continue processing the electrode 11;

[0044] S3, when any temperature value of the galvanometer mirror and the field mirror of the laser device 10 in the second laser group reaches the set value, the laser device 10 in the second laser group is turned off, and the laser device 10 in the first laser group is turned on to continue processing the pole piece 11;

[0045] S4. Repeat steps S2 to S3.

[0046] Specifically, the first laser group includes a plurality of laser devices 10, and the second laser group includes a plurality of laser devices 10. The laser devices 10 in the first laser group are used to process the pole piece 11, such as grooving the pole piece 11. Afterwards, when any temperature value of the galvanometer or field lens of the laser device 10 in the first laser group reaches a set value, the laser device 10 in the first laser group is turned off, which can protect the galvanometer and field lens of the laser device 10 in the first laser group and prevent the galvanometer and field lens from reducing the processing quality of the pole piece 11. At the same time, the laser device 10 in the second laser group is turned on to continue processing the pole piece 11, which can process the pole piece 11 uninterruptedly. Improve production efficiency; further, when any temperature value of the galvanometer or field mirror of the laser device 10 in the second laser group reaches the set value, the laser device 10 in the second laser group is turned off, which can protect the galvanometer and field mirror of the laser device 10 in the second laser group and prevent the galvanometer and field mirror from reducing the processing quality of the electrode 11. At the same time, the laser device 10 in the first laser group is turned on to continue processing the electrode 11, which can continuously process the electrode 11 and improve production efficiency; in this way, by switching the laser devices 10 in the first laser group and the second laser group, the electrode 11 can be processed uninterruptedly, which can make the production efficiency of the production line 9 higher. Specifically, the method of using the laser device can ensure that the laser device 10 has a high quality of grooving the electrode 11, and can also make the production efficiency of the production line 9 higher.

[0047] Please refer to Figure 2, which illustrates a laser device 10. Laser device 10 includes a galvanometer and a field lens. The position and tilt angle of the field lens are adjusted to control the position and size of the laser beam. In other words, the field lens primarily serves to adjust the focal length. A galvanometer is a vibrating mirror. By controlling the vibration direction and frequency of the galvanometer in laser device 10, the laser beam is accurately directed onto the object being processed. The galvanometer primarily performs scanning and positioning functions. The aforementioned set values ​​refer to the maximum temperature the galvanometer and field lens can withstand. The maximum temperature the galvanometer and field lens can withstand is between 35°C and 50°C. In other words, the set temperature range is between 35°C and 50°C. To prevent substandard product quality due to excessively high galvanometer or field lens temperatures, in this application, the laser device 10 must be stopped when the galvanometer or field lens temperature reaches 35°C to prevent substandard product quality.

[0048] The above-mentioned processing of the electrode 11 refers to the formation of the electrode 11 after the foil is coated with the active material. Before the electrode 11 is wound or stacked to form a battery cell, the surface of the electrode 11 is grooved by the laser of the laser device 10. Grooving can also refer to drilling blind holes on the electrode 11, thereby increasing the exposed surface area of ​​the electrode 11 and improving the fast charging capability of the battery. Among them, when the laser device 10 grooves the electrode 11, the shape of the groove can be linear, such as a straight groove, and extends along the length direction of the electrode 11. The groove can also extend along the width direction of the electrode 11.

[0049] In addition, referring to FIG3 , in some embodiments, the laser devices 10 in the first laser group and the laser devices 10 in the second laser group are alternately arranged along the conveying direction of the pole piece 11. The conveying device can be formed by a combination of an unwinding device 12, a rewinding device 16, and a driven roller 13, and the conveying device can convey the pole piece 11. The following example illustrates the alternating arrangement of the laser devices 10 in the first laser group and the laser devices 10 in the second laser group. The first laser group can have four laser devices 10, respectively named as a first laser device 100, a second laser device 300, a third laser device 500, and a fourth laser device 700. The second laser group can have four laser devices 10. The laser devices 10 in the first laser group and the laser devices 10 in the second laser group are respectively named as the fifth laser device 200, the sixth laser device 400, the seventh laser device 600, and the eighth laser device 800. Along the conveying direction of the pole piece 11, the laser devices 10 in the first laser group and the laser devices 10 in the second laser group are distributed as follows: the first laser device 100, the fifth laser device 200, the second laser device 300, the sixth laser device 400, the third laser device 500, the seventh laser device 600, the fourth laser device 700, and the eighth laser device 800. When the pole piece 11 is grooved, the first laser device 100, the second laser device 300, the third laser device 500, and the fourth laser device 700 are all turned on to groove the pole piece 11, while the fifth laser device 200, the sixth laser device 400, the seventh laser device 600, and the eighth laser device 800 are all turned off. When the temperatures of the galvanometer mirrors and field lenses in the first laser device 100, the second laser device 300, the third laser device 500, and the fourth laser device 700 are too high, the first laser device 100, the second laser device 300, the third laser device 500, and the fourth laser device 700 are shut down, and the fifth laser device 200, the sixth laser device 400, the seventh laser device 600, and the eighth laser device 800 are turned on to continue processing the electrode piece 11. Furthermore, when the temperatures of the galvanometer mirrors and field lenses in the fifth laser device 200, the sixth laser device 400, the seventh laser device 600, and the eighth laser device 800 are too high, the fifth laser device 200, the sixth laser device 400, the seventh laser device 600, and the eighth laser device 800 are shut down, and the first laser device 100, the second laser device 300, the third laser device 500, and the fourth laser device 700 are turned on to continue processing the electrode piece 11. This cycle continues until processing of the electrode piece 11 is completed.

[0050] Furthermore, as mentioned above, when the temperature of either the galvanometer mirror or the field mirror of the laser device 10 in the first laser group reaches a set value, the laser device 10 in the first laser group will be shut down. This can prevent the galvanometer mirror or the field mirror from overheating and causing damage, thereby reducing the processing quality of the electrode 11. When the laser device 10 in the first laser group is shut down, the laser device 10 in the second laser group continues to process the electrode 11. The galvanometer mirror or the field mirror can be cooled so that the first laser group can be quickly put into processing the electrode 11. Specifically, in some embodiments, in step S2, the method for using the laser device further includes the step of cooling the galvanometer mirror and the field mirror of the laser device 10 in the first laser group after shutting down the laser device 10 in the first laser group. In addition, after the galvanometer mirror and the field mirror are cooled, on the one hand, the first laser group can be quickly put into processing the electrode 11, and on the other hand, the galvanometer mirror and the field mirror can be quickly cooled, effectively preventing the galvanometer mirror and the field mirror from being damaged under high temperature conditions.

[0051] Furthermore, in some embodiments, the galvanometer and the field lens are cooled by water cooling or air cooling. Specifically, the method of cooling the galvanometer by water cooling may be to reduce the temperature of the galvanometer by indirectly contacting the liquid and the field lens. The method of cooling the field lens by water cooling may be to reduce the temperature of the field lens by indirectly contacting the liquid and the field lens. The method of cooling the galvanometer by air cooling may be to provide a ventilation channel so that the air passes through and indirectly contacts the galvanometer, thereby reducing the temperature of the galvanometer. The method of cooling the galvanometer by air cooling may be to provide a ventilation channel so that the air passes through and indirectly contacts the field lens, thereby reducing the temperature of the field lens.

[0052] As mentioned above, when the temperature value of either the galvanometer mirror or the field mirror of the laser device 10 in the second laser group reaches the set value, the laser device 10 in the second laser group will be shut down. This can prevent the galvanometer mirror or the field mirror from being overheated and causing damage, thereby reducing the processing quality of the electrode 11. When the laser device 10 in the second laser group is shut down, the laser device 10 in the first laser group continues to process the electrode 11. Among them, the second laser group can be quickly put into the processing of the electrode 11 by cooling the galvanometer mirror or the field mirror. Specifically, in some embodiments, in step S3, the method for using the laser device further includes the step of cooling the galvanometer mirror and the field mirror of the laser device 10 in the second laser group after shutting down the laser device 10 in the second laser group. In addition, after the galvanometer mirror and the field mirror are cooled, on the one hand, the second laser group can be quickly put into the processing of the electrode 11, and on the other hand, the galvanometer mirror and the field mirror can be quickly cooled, effectively preventing the galvanometer mirror and the field mirror from being damaged under high temperature conditions.

[0053] Specifically, while the laser device 10 in the first laser group is processing the pole piece 11, the galvanometer mirror and field mirror in the laser device 10 can be cooled simultaneously. Specifically, in some embodiments, in step S1, while the laser device 10 in the first laser group is turned on and processing the pole piece 11, the galvanometer mirror and field mirror in the laser device 10 are cooled simultaneously. In this way, cooling the galvanometer mirror and field mirror while the laser device 10 is operating can effectively prevent the galvanometer mirror and field mirror from heating up too quickly, and prevent damage to the galvanometer mirror and field mirror due to excessive temperatures.

[0054] Similarly, while the laser device 10 in the second laser group is processing the pole piece 11, the galvanometer mirror and field mirror in the laser device 10 can be cooled simultaneously. Specifically, in some embodiments, in step S2, while the laser device 10 in the second laser group is turned on and processing the pole piece 11, the galvanometer mirror and field mirror in the laser device 10 are cooled simultaneously. In this way, cooling the galvanometer mirror and field mirror while the laser device 10 is operating can effectively prevent the galvanometer mirror and field mirror from heating up too quickly, and prevent damage to the galvanometer mirror and field mirror due to excessive temperatures.

[0055] The structure of the production line 9 is introduced below. Please refer to Figure 3. The production line 9 is mainly used to process the pole piece 11. The production line 9 includes a unwinding device 12, a driven roller 13, a dust cleaning device 14, a tension device 15, a laser device 10 and a winding device 16, which are arranged in sequence along the conveying direction of the pole piece 11. Among them, the function of the unwinding device 12 is to unwind the material, and the driven roller 13 cooperates with various devices to realize the conveyance of the pole piece 11. The function of the dust cleaning device 14 is to clean the incoming material and clean the dust before winding. The dust cleaning device 14 includes a brush, an air knife, an ion wind and an ultrasonic dust cleaning device. The function of the tension device 15 is to realize tension control to ensure that the pole piece 11 material strip is tensioned. The laser equipment 10 is mainly used for processing the pole piece 11.

[0056] Furthermore, in some embodiments, production line 9 includes: a first laser group, a second laser group, a temperature sensor, and a controller. Both the first and second laser groups include multiple laser devices 10, each used to process a pole piece 11. The temperature sensor is used to detect the temperature of the galvanometer mirror and field lens in the laser devices 10. A controller is connected to the first and second laser groups and the temperature sensor, and is used to receive and send signals.

[0057] The controller is configured to: when it is detected that any temperature value of the galvanometer mirror and the field mirror in the first laser group reaches a set value, turn off the laser device 10 in the first laser group and turn on the laser device 10 in the second laser group;

[0058] When it is detected that any temperature value of the galvanometer mirror and the field mirror in the second laser group reaches a set value, the laser device 10 in the second laser group is turned off, and the laser device 10 in the first laser group is turned on at the same time.

[0059] Specifically, the first laser group includes multiple laser devices 10, and the second laser group includes multiple laser devices 10. The laser devices 10 in the first laser group are used to process the pole piece 11, such as grooving the pole piece 11. Afterwards, the temperature values ​​of the galvanometer and the field lens of the laser device 10 in the first laser group are detected by the temperature sensor. When the temperature sensor detects that any temperature value of the galvanometer or the field lens of the laser device 10 in the first laser group reaches the set value, the temperature sensor sends a signal to the controller, and the controller turns off the laser device 10 in the first laser group. This can protect the galvanometer and the field lens of the laser device 10 in the first laser group and prevent the processing quality of the pole piece 11 by the galvanometer and the field lens from being reduced. At the same time, the controller turns on the laser device 10 in the second laser group to continue processing the pole piece 11 , which can process the pole piece 11 uninterruptedly and improve production efficiency; further, when the temperature sensor detects that any temperature value of the galvanometer or field lens of the laser device 10 in the second laser group reaches the set value, the temperature sensor sends a signal to the controller, and the controller turns off the laser device 10 in the second laser group, which can protect the galvanometer and field lens of the laser device 10 in the second laser group and prevent the galvanometer and field lens from reducing the processing quality of the pole piece 11. At the same time, the controller turns on the laser device 10 in the first laser group to continue processing the pole piece 11, which can process the pole piece 11 uninterruptedly and improve production efficiency; in this way, by switching the laser devices 10 in the first laser group and the second laser group, the pole piece 11 can be processed uninterruptedly, which can make the production line 9 have a higher production efficiency. Specifically, the method of using the laser equipment can ensure that the laser equipment 10 has a high quality of grooving the pole piece 11, and can also make the production line 9 have a high production efficiency.

[0060] A controller is a feedback loop component widely used in industrial control applications, such as a programmable memory or single-chip microcomputer. It internally stores instructions for executing logical operations, sequential control, timing, counting, and arithmetic operations, and controls various types of mechanical equipment or production processes through digital or analog input and output. As can be seen, the controller can send instructions to turn the laser device 10 on and off, and can also receive temperature values ​​detected by a temperature sensor to issue instructions. In this application, the controller can achieve the alternating use of the laser devices 10 in the first laser group and the second laser group. Those skilled in the art can implement this based on existing controller functions. The principles and control methods of the controller are prior art and are not described in detail here.

[0061] Furthermore, in some embodiments, the laser device 10 includes a first cooling element, which is thermally connected to the galvanometer. The first cooling element is provided with a first cooling channel, and the first cooling channel is used to allow a cooling medium to flow. The cooling medium can be a liquid or a gas, and a fast-cooling material, such as ice, can be added to the liquid. As the cooling medium flows through the first cooling channel, the cooling medium can remove heat from the galvanometer, thereby cooling the galvanometer. This can ensure that the galvanometer continues to work and can also effectively prevent the galvanometer from being damaged due to excessive temperature.

[0062] Specifically, in some embodiments, the laser device 10 includes a second cooling element, which is thermally connected to the field lens. The second cooling element is provided with a second cooling channel for the flow of a cooling medium. The cooling medium can be a liquid or a gas, and a fast-cooling material, such as ice, can be added to the liquid. As the cooling medium flows through the second cooling channel, the cooling medium can remove heat from the field lens, thereby cooling the field lens. This ensures that the field lens continues to operate and effectively prevents damage to the field lens due to excessive temperatures.

[0063] Further, referring to FIG3 , in some embodiments, the production line 9 further includes a conveying device, which is used to convey the electrode 11. Along the conveying direction of the electrode 11, the laser devices 10 in the first laser group and the laser devices 10 in the second laser group are alternately arranged. The conveying device can be formed by a combination of an unwinding device 12, a rewinding device 16, and a driven roller 13, and the conveying device can convey the electrode 11. The following example illustrates the alternating arrangement of the laser devices 10 in the first laser group and the laser devices 10 in the second laser group. The first laser group can have four laser devices 10, respectively named as the first laser device 100, the second laser device 300, the third laser device 500, and the fourth laser device 700. The second laser group can have four laser devices 10. Named as the fifth laser device 200, the sixth laser device 400, the seventh laser device 600, and the eighth laser device 800, respectively, along the conveying direction of the pole piece 11, the laser devices 10 in the first laser group and the laser devices 10 in the second laser group are distributed as follows: the first laser device 100, the fifth laser device 200, the second laser device 300, the sixth laser device 400, the third laser device 500, the seventh laser device 600, the fourth laser device 700, and the eighth laser device 800. The laser devices 10 in the first laser group can process the front side of the pole piece 11, while the laser devices 10 in the second laser group can process the back side of the pole piece 11. In other words, the first laser device 100, the second laser device 300, the third laser device 500, and the fourth laser device 700 process the front side of the pole piece 11, while the fifth laser device 200, the sixth laser device 400, the seventh laser device 600, and the eighth laser device 800 process the back side of the pole piece 11. In addition, among the ten laser devices 10, the first four laser devices 10 may process the front surface of the pole piece 11, and the last four laser devices 10 may process the back surface of the pole piece 11. That is, the first laser device 100, the fifth laser device 200, the second laser device 300, and the sixth laser device 400 may process the front surface of the pole piece 11, and the third laser device 500, the seventh laser device 600, the fourth laser device 700, and the eighth laser device 800 may process the back surface of the pole piece 11.

[0064] The embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A method for using a laser device, wherein: The laser device is used in a production line, the production line includes a plurality of laser devices, the laser device is used to process a pole piece, and the method for using the laser device includes the following steps: S1, dividing a plurality of laser devices into a first laser group and a second laser group, turning on the laser devices in the first laser group and processing the pole piece; S2, when any temperature value of the galvanometer and the field mirror of the laser device in the first laser group reaches a set value, turning off the laser device in the first laser group, and turning on the laser device in the second laser group to continue processing the pole piece; S3, when any temperature value of the galvanometer and the field mirror of the laser device in the second laser group reaches a set value, turning off the laser device in the second laser group, and turning on the laser device in the first laser group to continue processing the pole piece; and S4. Repeat steps S2 to S3.

2. The method for using a laser device according to claim 1, wherein: In step S2, the method for using the laser device further includes the step of: after shutting down the laser device of the first laser group, cooling down the galvanometer mirror and the field mirror of the laser device in the first laser group.

3. The method for using a laser device according to claim 2, wherein: The galvanometer and the field mirror are cooled by water cooling or air cooling.

4. The method for using a laser device according to claim 1, wherein: In step S3, the method for using the laser device further includes the step of: after shutting down the laser device of the second laser group, cooling down the galvanometer mirror and the field mirror of the laser device in the second laser group.

5. The method for using a laser device according to claim 1, wherein: In step S1, when the laser device in the first laser group is turned on and the pole piece is processed, the galvanometer mirror and the field mirror in the laser device are cooled down at the same time.

6. The method for using a laser device according to claim 1, wherein: In step S2, when the laser device in the second laser group is turned on and the pole piece is processed, the galvanometer mirror and the field mirror in the laser device are cooled down at the same time.

7. A production line, wherein: The production line comprises: The first laser group and the second laser group each include a plurality of laser devices, and the laser devices are used for processing the pole piece; A temperature sensor, used to detect the temperature values ​​of the galvanometer and the field mirror in the laser device; and A controller is connected to the first laser group, the second laser group and the temperature sensor, and the controller is used to receive and send signals. The controller is configured as follows: When it is detected that any temperature value of the galvanometer mirror and the field mirror in the first laser group reaches a set value, turning off the laser device in the first laser group and turning on the laser device in the second laser group; and When it is detected that any temperature value of the galvanometer mirror and the field mirror in the second laser group reaches a set value, the laser device in the second laser group is turned off, and the laser device in the first laser group is turned on.

8. The production line according to claim 7, wherein: The laser device comprises a first cooling member, the first cooling member is thermally connected to the galvanometer, the first cooling member is provided with a first cooling channel, and the first cooling channel is used for cooling medium to flow.

9. The production line according to claim 7, wherein: The laser device comprises a second cooling member, the second cooling member is thermally connected to the field lens, the second cooling member is provided with a second cooling channel, and the second cooling channel is used for the flow of cooling medium.

10. The production line according to claim 7, wherein: The production line further comprises a conveying device, wherein the conveying device is used to convey the pole piece, and along the conveying direction of the pole piece, the laser devices in the first laser group and the laser devices in the second laser group are arranged alternately.

Images