Laser welding equipment and battery production system

Abstract

The utility model relates to the field of battery production, and provides laser welding equipment and a battery production system. The laser welding equipment comprises an outer cover, a first feeding mechanism, a first protective cover, a first door structure and a first detection assembly. The first protective cover is in butt joint with the peripheral side of the outer cover. A part of the first feeding mechanism extends into the outer cover, and the other part of the first feeding mechanism extends into the first protective cover. The first protective cover is provided with a first feeding port corresponding to the first feeding mechanism. The first door structure corresponds to the first feeding port and is used for opening and closing the first feeding port. The first detection assembly and the first door structure are correspondingly arranged, the first detection assembly comprises two first detectors, at least one of the two first detectors is installed on the first door structure, and the two first detectors are mutually aligned for detection so as to determine the opening and closing state of the first door structure. According to the laser welding equipment, the laser can be stopped from escaping in multiple dimensions, particularly the risk that the laser escapes from the feeding position of the laser welding equipment can be reduced, and the use reliability of the laser welding equipment can be improved.

Description

Technical Field

[0001] The present application belongs to the field of battery production technology, and in particular, relates to a laser welding device and a battery production system. Background Art

[0002] During the process of welding parts by laser welding equipment, laser escape may occur due to diffuse reflection of laser, resulting in poor reliability of the laser welding equipment. Utility Model Content

[0003] The embodiments of the present application provide a laser welding device and a battery production system, which aim to solve the problem that laser welding equipment is prone to laser escape and has poor reliability in use.

[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is:

[0005] In a first aspect, a laser welding device is provided, comprising:

[0006] Outer cover;

[0007] A first feeding mechanism;

[0008] A first protective cover is connected to the peripheral side of the outer cover; a portion of the first feeding mechanism extends into the outer cover and another portion extends into the first protective cover; the first protective cover is provided with a first feeding port corresponding to the first feeding mechanism;

[0009] a first door structure, arranged corresponding to the first feeding port, and used for opening and closing the first feeding port;

[0010] The first detection component is arranged corresponding to the first door structure. The first detection component includes two first detectors. At least one of the two first detectors is installed on the first door structure. The two first detectors detect each other to determine the opening and closing state of the first door structure.

[0011] The laser welding equipment provided in the embodiment of the present application can facilitate the material to be transferred to the inside and outside of the laser welding equipment by opening the first feeding port through the first door structure, so as to facilitate the material to be taken and placed in the corresponding first feeding mechanism through the first feeding port, and facilitate the laser welding equipment to perform laser welding operations on the material. On this basis, the laser welding equipment provided in this embodiment can block most of the laser from escaping outward through the outer cover, and can block the laser "escaping from the outer cover to the first protective cover through the penetration of the first feeding mechanism" from escaping outward through the first protective cover, and in particular, can close the first feeding port through the first door structure to block the laser from escaping outward from the first feeding port. Based on this, the laser welding equipment provided in this embodiment can block the laser from escaping in multiple dimensions and directions, and in particular can reduce the risk of the laser escaping from the feeding port of the laser welding equipment, thereby reducing the laser escape phenomenon and improving the reliability of the use of the laser welding equipment.

[0012] By adopting the above scheme, when the first door structure is closed and the corresponding first feeding port is closed, the two first detectors of the first detection assembly corresponding to the first door structure can be detected to detect whether the first door structure is closed in place. Based on this, a confirmation mechanism for the state of the first door structure can be formed, which can facilitate the laser welding equipment to take corresponding actions and measures according to the confirmation of the state of the first door structure, so as to maintain and improve the reliability of the use of the laser welding equipment.

[0013] In some embodiments, the first door structure includes two door bodies that open and close together corresponding to the first feeding port, and the two first detectors of the first detection assembly are respectively installed on the two door bodies corresponding to the first door structure.

[0014] By adopting the above scheme, the first door structure can open and close the corresponding first feeding port through two door bodies together. Based on this, the structural stability and structural reliability of the first door structure can be improved, and the first door structure can be convenient for quickly and flexibly opening and closing the corresponding first feeding port. On this basis, by making the two first detectors of the first detection component respectively installed on the two door bodies corresponding to the first door structure, it is convenient for the two first detectors to move synchronously with the two door bodies, so that the two first detectors can correspond to the state of the two door bodies. Based on this, in the case where any door body of the first door structure is not closed in place, the two first detectors will not be able to detect in position, so as to accurately judge that "the first door structure is not closed in place". Only in the case where both door bodies of the first door structure are closed in place, the two first detectors can detect each other in position, so as to accurately judge that "the first door structure is closed in place". In this way, the risk of the first detection component misjudging "the first door structure is closed in place" when one of the door bodies is not closed in place can be reduced, and the detection precision, detection accuracy and detection reliability of the first detection component can be improved.

[0015] In some embodiments, a material loading fixture is provided on the first feeding mechanism, and a frame structure is provided around the material loading fixture;

[0016] In the gravity direction, the first feeding port is arranged on the top wall of the first protective cover, and when the loading fixture is facing the first feeding port, the frame structure is arranged below the first feeding port and covers the outer periphery of the first feeding port.

[0017] By adopting the above solution, when the material carrier moves to the position directly below the first feeding port, the frame structure arranged around the outer periphery of the material carrier can be used to cover the outer periphery of the first feeding port below the first feeding port. Based on this, the frame structure can be used to prevent the laser from being diffusely reflected through the gap between the material carrier and the top wall of the first protective cover and escaping from the first feeding port, thereby reducing the risk of the laser escaping from the first feeding port and improving the reliability of the laser welding equipment.

[0018] In some embodiments, when the material loading fixture is facing the first material feeding port, the distance between the top surface of the frame structure and the top wall of the first protective cover is 0-2 mm.

[0019] By adopting the above solution, a small gap can be formed between the top surface of the frame structure and the top wall of the first protective cover, and the gap is less than or equal to 2 mm. Based on this, when the material carrier moves to the position directly below the first feeding port, the risk of the laser being diffusely reflected to the first feeding port through the gap between the top surface of the frame structure and the top wall of the first protective cover can be reduced, and the risk of the laser escaping from the first feeding port can be reduced, thereby improving the reliability of the laser welding equipment.

[0020] In some embodiments, two first feeding mechanisms are provided, and the two first feeding mechanisms are arranged side by side.

[0021] By adopting the above solution, two first feeding mechanisms can be provided so as to alternately use the two first feeding mechanisms for feeding. Based on this, uninterrupted feeding can be realized, feeding efficiency can be improved, the risk of affecting the operating efficiency of the laser welding equipment due to the feeding interval can be reduced, and the operating efficiency of the laser welding equipment can be improved.

[0022] In some embodiments, the laser welding apparatus comprises:

[0023] a second protective cover, wherein a portion of the second protective cover extends into the outer cover and another portion extends out of the outer cover, a second feeding port is provided on the portion of the second protective cover extending into the outer cover, and a third feeding port is provided on the portion of the second protective cover extending out of the outer cover;

[0024] A second feeding mechanism is disposed in the second protective cover, and a feeding path of the second feeding mechanism passes through the second feeding port and the third feeding port; one of the second feeding mechanism and the first feeding mechanism is used for loading, and the other of the two is used for discharging;

[0025] A second door structure is provided corresponding to the second feeding port and is used to open and close the second feeding port;

[0026] The third door structure is arranged corresponding to the third feeding port and is used for opening and closing the third feeding port.

[0027] By adopting the above scheme, it is convenient for the laser welding equipment to realize a series of automated processes such as feeding, welding, and discharging, and the operating efficiency and performance of the laser welding equipment can be improved. On this basis, at the location where the second feeding mechanism is set, the laser welding equipment can close the second feeding port through the second door structure to prevent the laser in the outer cover from escaping from the second feeding port to the second protective cover; the laser in the second protective cover can be prevented from escaping outward by the second protective cover; the third feeding port can be closed by the third door structure to prevent the laser in the second protective cover from escaping outward from the third feeding port. Based on this, at the location where the second feeding mechanism is set, the laser welding equipment can prevent the laser from escaping in multiple dimensions and directions. Therefore, in combination with the above embodiments, the laser welding equipment can perform special laser protection design at the feeding and discharging locations to reduce the risk of laser escaping from the feeding and discharging locations of the laser welding equipment, thereby optimizing and improving the reliability of the use of the laser welding equipment.

[0028] In some embodiments, the second door structure opens and closes the second feeding port when the third door structure closes the third feeding port, and the third door structure opens and closes the third feeding port when the second door structure closes the second feeding port.

[0029] By adopting the above solution, the second door structure can be allowed to open and close the second feeding port when the third door structure closes the third feeding port, and the third door structure can be allowed to open and close the third feeding port when the second door structure closes the second feeding port, which can limit the occurrence of the situation where "the second door structure opens the second feeding port and the third door structure opens the third feeding port". Based on this, the risk of laser escaping quickly and directly from the second and third feeding ports opened at the same time can be reduced on the basis of maintaining the normal operation of the laser welding equipment, thereby preventing laser escape and optimizing and improving the reliability of the use of the laser welding equipment.

[0030] In some embodiments, the laser welding equipment includes a second detection component arranged corresponding to the second door structure, the second detection component includes two second detectors, at least one of the two second detectors is installed on the second door structure, and the two second detectors are aligned with each other to detect the opening and closing state of the second door structure.

[0031] By adopting the above scheme, when the second door structure is closed and the corresponding second feeding port is closed, the two second detectors of the second detection assembly corresponding to the second door structure can be detected to detect whether the second door structure is closed in place. Based on this, a confirmation mechanism for the state of the second door structure can be formed, which can facilitate the laser welding equipment to take corresponding actions and measures according to the confirmation of the state of the second door structure, so as to maintain and improve the reliability of the use of the laser welding equipment.

[0032] In some embodiments, the laser welding equipment includes a third detection component arranged corresponding to the third door structure, the third detection component includes two third detectors, at least one of the two third detectors is installed on the third door structure, and the two third detectors are aligned with each other to detect the opening and closing state of the third door structure.

[0033] By adopting the above scheme, when the third door structure closes the corresponding third feeding port, the two third detectors of the third detection assembly corresponding to the third door structure can be detected to detect whether the third door structure is closed in place. Based on this, a confirmation mechanism for the state of the third door structure can be formed, which can facilitate the laser welding equipment to take corresponding actions and measures according to the confirmation of the state of the third door structure, so as to maintain and improve the reliability of the use of the laser welding equipment.

[0034] In some embodiments, the inner side surface of at least one of the outer cover, the first protective cover, the first door structure, the second protective cover, the second door structure, and the third door structure is a black light-absorbing surface.

[0035] By adopting the above scheme, by making the inner side surface of at least one of the outer cover, the first protective cover, the first door structure, the second protective cover, the second door structure, and the third door structure a black light-absorbing surface, it is possible to absorb the laser through the black light-absorbing surface to reduce the reflection, diffuse reflection and escape of the laser, thereby improving the reliability of the laser welding equipment under abnormal conditions.

[0036] In a second aspect, a battery production system is provided, including the laser welding equipment provided in an embodiment of the present application.

[0037] By adopting the above solution, the battery production system can perform laser welding operations (such as welding of battery casings) by applying the laser welding equipment provided in the embodiments of the present application, and the reliability of the battery production system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 A partial structural schematic diagram of a laser welding device provided in some embodiments of the present application;

[0040] Figure 2 A schematic diagram of the assembly structure of an outer cover, a first protective cover, a first door structure, and a first detection component provided in some embodiments of the present application;

[0041] Figure 3 for Figure 1 A magnified image of region A is provided;

[0042] Figure 4 A schematic diagram of the assembly structure of a material loading fixture and a frame structure provided in some embodiments of the present application;

[0043] Figure 5 A schematic diagram of the assembly structure of a second protective cover, a second door structure, a third door structure, a second detection component, and a third detection component provided in some embodiments of the present application;

[0044] Figure 6 A schematic diagram of the assembly structure of a second protective cover, a second door structure, a third door structure, a second detection component, and a third detection component provided in some embodiments of the present application, wherein the second door structure opens the second feeding port;

[0045] Figure 7 A schematic diagram of the assembly structure of a second protective cover, a second feeding mechanism, a third door structure, and a third detection component provided in some embodiments of the present application, wherein the third door structure opens a third feeding port;

[0046] Figure 8 A schematic diagram of the assembly structure of a maintenance door, an electric lock, an unlock button, and a lock button provided in some embodiments of the present application.

[0047] Among them, the reference numerals in the figure are:

[0048] 10-outer cover, 20-first feeding mechanism, 30-first protective cover, 31-first feeding port, 40-first door structure, 41-door body, 50-first detection assembly, 51-first detector, 60-loading fixture, 70-frame structure, 80-second protective cover, 81-second feeding port, 82-third feeding port, 90-second feeding mechanism, 100-second door structure, 110-third door structure, 120-second detection assembly, 121-second detector, 130-third detection assembly, 131-third detector, 140-maintenance door, 150-electric lock, 160-unlock button, 170-lock button. DETAILED DESCRIPTION

[0049] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clear, the present application is described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. If there is no special description, all implementation methods and optional implementation methods of the present application can be combined with each other to form a new technical solution. If there is no special description, all technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0050] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] During the process of welding parts by laser welding equipment, laser escape may occur due to diffuse reflection of laser, resulting in poor reliability of the laser welding equipment.

[0054] Therefore, the embodiment of the present application provides a laser welding device, which can block most of the laser from escaping outwards through the outer cover, and can block the laser "escaping from the outer cover to the first protective cover through the penetration of the first feeding mechanism" from escaping outwards through the first protective cover, and in particular, the first feeding port can be closed by the first door structure to block the laser from escaping outwards from the first feeding port. Based on this, the laser welding device can block the laser from escaping in multiple dimensions and directions, and in particular, can reduce the risk of the laser escaping from the feeding port of the laser welding device, thereby reducing the laser escape phenomenon and improving the reliability of the laser welding device.

[0055] The laser welding equipment provided in the embodiment of the present application can be used for laser welding operations and can be applicable to the welding of any parts, especially suitable for the welding of batteries (such as the welding of battery casings), and especially suitable for battery production systems (such as battery production lines).

[0056] The battery production system provided in the embodiment of the present application can be used to produce batteries, and one or more laser welding devices provided in the embodiment of the present application can be set. Among them, the battery can be the smallest unit for storing and outputting electrical energy, that is, a battery cell. The battery cell may be a secondary battery, and a secondary battery refers to a battery cell that can be activated by charging the active material after the battery cell is discharged and continues to be used. The battery may be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, and the like. The battery may be cylindrical, flat, rectangular, or in other shapes, and the like. The battery may be packaged in different ways to form a cylindrical battery, a square battery, a soft-pack battery, and the like.

[0057] In order to illustrate the technical solution provided by the present application, a detailed description is given below in conjunction with specific drawings and embodiments.

[0058] See also Figure 1 , Figure 2 Some embodiments of the present application provide a laser welding device, including an outer cover 10, a first feeding mechanism 20, a first protective cover 30 and a first door structure 40. The first protective cover 30 is connected to the peripheral side of the outer cover 10. A portion of the first feeding mechanism 20 extends into the outer cover 10 and another portion extends into the first protective cover 30. The first protective cover 30 is provided with a first feeding port 31 corresponding to the first feeding mechanism 20. The first door structure 40 is arranged corresponding to the first feeding port 31, and is used to open and close the first feeding port 31.

[0059] It should be noted that the outer cover 10 is the outer cover of the entire device. The outer cover 10 can enclose a space for placing a laser welding mechanism and other mechanisms. The outer cover 10 can protect the laser welding mechanism and other mechanisms from dust and other factors, and can block the escape of most lasers. The structure, shape, and size of the outer cover 10 can be set as required. In order to facilitate the display of the first feeding mechanism 20, Figure 1 Only one wall surface of the outer cover 10 is shown, and other wall surfaces of the outer cover 10 are not shown. In some embodiments, the outer cover 10 includes a plurality of side walls sequentially connected end to end along its circumference, and a top wall covering the top sides of the side walls.

[0060] The first protective cover 30 is connected to one side of the outer cover 10, especially the side of the first protective cover 30 facing the outer cover 10 is in contact with the outer cover 10. The structure, shape and size of the first protective cover 30 can be set as required, and the first protective cover 30 can be but not limited to a rectangular parallelepiped.

[0061] Part of the first feeding mechanism 20 extends into the outer cover 10, and another part of the first feeding mechanism 20 extends into the first protective cover 30. For the laser escaping from the outer cover 10 to the first protective cover 30 through the penetration of the first feeding mechanism 20, the first protective cover 30 can reliably block the escape of this part of the laser.

[0062] The first feeding mechanism 20 is used to transfer materials between the interior of the outer cover 10 and the interior of the first protective cover 30. In some scenarios, the first feeding mechanism 20 can be used for loading, that is, for transferring the materials to be welded from the interior of the first protective cover 30 to the interior of the outer cover 10, so that the laser welding mechanism and other mechanisms in the outer cover 10 can perform laser welding operations on the materials. In other scenarios, the first feeding mechanism 20 can be used for discharging, that is, for transferring the welded materials from the interior of the outer cover 10 to the interior of the first protective cover 30, so as to facilitate the output of the welded materials. Among them, the first feeding mechanism 20 can be, but is not limited to, a conveyor belt, a chain conveyor, a pneumatic feeding mechanism, an electric feeding mechanism, a magnetic feeding mechanism, and the like.

[0063] The first protective cover 30 is provided with a first feeding port 31, which connects the inside and outside of the first protective cover 30, and the first feeding port 31 is arranged corresponding to the first feeding mechanism 20, so as to facilitate placing materials on the first feeding mechanism 20 or taking materials away from the first feeding mechanism 20 through the first feeding port 31. The first feeding port 31 and the first feeding mechanism 20 can be arranged correspondingly along the gravity direction, or along the horizontal direction, or along other directions that are convenient for taking and placing materials. The shape and size of the first feeding port 31 can be set as needed, and the first feeding port 31 can be, but is not limited to, a rectangular port.

[0064] A first door structure 40 is correspondingly installed on the outer side (or inner side) of the first feeding port 31, and the first door structure 40 is used to open or close the first feeding port 31. That is, the first door structure 40 can open the first feeding port 31, so as to place the material on the first feeding mechanism 20 or take it away from the first feeding mechanism 20 through the first feeding port 31. The first door structure 40 can also close the first feeding port 31 to prevent the laser from escaping from the first feeding port 31. Among them, the first door structure 40 can be a single door or a double door. The first door structure 40 can rotate or move in a plane relative to the first feeding port 31 to open and close the corresponding first feeding port 31. The first door structure 40 can be opened and closed manually or automatically. In the case where the first door structure 40 is automatically opened and closed, an electric motor, a hydraulic or pneumatic drive mechanism, a linear motor drive mechanism, etc. can be used to drive the first door mechanism to open and close automatically.

[0065] The corresponding first feeding mechanism 20, first feeding port 31, and first door structure 40 may be provided in one group (ie, each provided with one), or may be provided in multiple groups (ie, each provided with multiple equal amounts).

[0066] In summary, the laser welding equipment provided in the embodiment of the present application can facilitate the material to be transferred to the inside and outside of the laser welding equipment by opening the first feeding port 31 through the first door structure 40, so as to facilitate the material to be taken and placed in the corresponding first feeding mechanism 20 through the first feeding port 31, and facilitate the laser welding operation of the material by the laser welding equipment. On this basis, the laser welding equipment provided in this embodiment can block most of the laser from escaping outward through the outer cover 10, and can block the laser "escaping from the outer cover 10 to the first protective cover 30 through the penetration of the first feeding mechanism 20" from escaping outward through the first protective cover 30, and in particular, can close the first feeding port 31 through the first door structure 40 to block the laser from escaping outward from the first feeding port 31. Based on this, the laser welding equipment provided in this embodiment can block the laser from escaping in multiple dimensions and directions, and in particular, can reduce the risk of laser escaping from the feeding port of the laser welding equipment, thereby reducing the laser escape phenomenon and improving the reliability of the use of the laser welding equipment.

[0067] See also Figure 1 , Figure 2 , Figure 3 In some embodiments of the present application, the laser welding equipment includes a first detection component 50 arranged corresponding to the first door structure 40, and the first detection component 50 includes two first detectors 51, at least one of the two first detectors 51 is installed on the first door structure 40, and the two first detectors 51 are aligned with each other for detection to determine the opening and closing state of the first door structure 40.

[0068] It should be noted that at least one first detection component 50 may be provided for each first door structure 40, and the first detection component 50 may be used to detect whether the first door structure 40 is fully closed. In some embodiments, two first door structures 40 are provided, and one first detection component 50 is provided for each of the two first door structures 40.

[0069] The first detection assembly 50 includes two first detectors 51, one or two first detectors 51 are installed on the first door structure 40 and can move synchronously with the first door structure 40. When the first door structure 40 closes the corresponding first feeding port 31, the two first detectors 51 can detect each other to determine whether the first door structure 40 is fully closed. On the contrary, if the two first detectors 51 are not detected in alignment, it can be determined that the first door structure 40 is not fully closed.

[0070] For example, in some embodiments, the first door structure 40 is a double door, and the two first detectors 51 of the first detection assembly 50 can be respectively installed on the two door bodies 41 of the first door structure 40, and the two first detectors 51 can each move synchronously with the two door bodies 41. When the two door bodies 41 of the first door structure 40 jointly close the first feeding port 31, the two first detectors 51 can detect each other to determine whether "the first door structure 40 is closed in place".

[0071] In other embodiments, the first door structure 40 is a double door, one of the first detectors 51 of the first detection assembly 50 can be installed on a door body 41 of the first door structure 40 and move synchronously with the door body 41, and the other first detector 51 of the first detection assembly 50 can be fixed to the periphery of the corresponding first feeding port 31. When the two door bodies 41 of the first door structure 40 jointly close the first feeding port 31, the two first detectors 51 can detect each other to determine whether "the first door structure 40 is closed in place".

[0072] In other embodiments, the first door structure 40 is a single-opening door, one of the first detectors 51 of the first detection assembly 50 can be installed on the first door structure 40 and move synchronously with the first door structure 40, and the other first detector 51 of the first detection assembly 50 can be fixed to the periphery of the corresponding first feeding port 31. When the first door structure 40 closes the first feeding port 31, the two first detectors 51 can detect each other to determine whether "the first door structure 40 is closed in place".

[0073] The first detector 51 may be installed by, but is not limited to, bonding, welding, or clamping.

[0074] The first detector 51 may adopt various types of sensors, especially non-contact sensors, such as proximity sensors, photoelectric sensors, ultrasonic sensors, magnetic sensors, laser sensors, radar sensors, etc.

[0075] By adopting the above scheme, when the first door structure 40 is closed and the corresponding first feeding port 31 is closed, the two first detectors 51 of the first detection assembly 50 corresponding to the first door structure 40 can be detected to detect whether the first door structure 40 is closed in place. Based on this, a confirmation mechanism for the state of the first door structure 40 can be formed, which can facilitate the laser welding equipment to take corresponding actions and measures according to the confirmation of the state of the first door structure 40 (for example, the laser welding equipment can limit the laser operation when the first door structure 40 is not closed in place, and for example, the laser welding equipment can perform the laser operation normally when the first door structure 40 is closed in place, etc.), so as to maintain and improve the reliability of the laser welding equipment.

[0076] See also Figure 1 , Figure 2 , Figure 3 In some embodiments of the present application, the first door structure 40 includes two door bodies 41 that open and close the corresponding first feeding port 31 together, and the two first detectors 51 of the first detection assembly 50 are respectively installed on the two door bodies 41 corresponding to the first door structure 40.

[0077] It should be noted that, in this embodiment, the first door structure 40 is a double-opening door, and the first door structure 40 includes two door bodies 41, and the two door bodies 41 open or close the corresponding first feeding port 31 together. Among them, the two door bodies 41 can open and close the corresponding first feeding port 31 together by moving toward or away from each other, or the two door bodies 41 can open and close the corresponding first feeding port 31 together by rotating. In some embodiments, the two door bodies 41 can be respectively installed on two linear motion mechanisms, and the two linear motion mechanisms can drive the two door bodies 41 to move toward each other until the two door bodies 41 close the corresponding first feeding port 31 together, and the two linear motion mechanisms can drive the two door bodies 41 to move away from each other until the two door bodies 41 open the corresponding first feeding port 31 together. Among them, the linear motion mechanism can adopt (but not limited to) a combined structure of a slide rail, a slider and a driver.

[0078] On this basis, the two first detectors 51 of the first detection assembly 50 can be respectively installed on the two door bodies 41 corresponding to the first door structure 40, so that the two first detectors 51 can each move synchronously with the two door bodies 41.

[0079] By adopting the above scheme, the first door structure 40 can open and close the corresponding first feeding port 31 through the two door bodies 41. Based on this, the structural stability and structural reliability of the first door structure 40 can be improved, and the first door structure 40 can be convenient for opening and closing the corresponding first feeding port 31 quickly and flexibly. On this basis, by installing the two first detectors 51 of the first detection assembly 50 on the two door bodies 41 corresponding to the first door structure 40, respectively, the two first detectors 51 can be convenient for each of the two first detectors 51 to move synchronously with the two door bodies 41, so that the two first detectors 51 can correspond to the state of the two door bodies 41. Based on this, when any door body 41 of the first door structure 40 is not closed in place, the two first detectors 51 will not be able to detect the position, so as to accurately judge that "the first door structure 40 is not closed in place". Only when both door bodies 41 of the first door structure 40 are closed in place, the two first detectors 51 can detect each other in position, so as to accurately judge that "the first door structure 40 is closed in place". In this way, the risk of the first detection component 50 misjudging that "the first door structure 40 is fully closed" when one of the door bodies 41 is not fully closed can be reduced, and the detection precision, accuracy and reliability of the first detection component 50 can be improved.

[0080] Of course, in other embodiments, the first door structure 40 may be a double-opening door, one of the first detectors 51 of the first detection assembly 50 may be installed on one of the door bodies 41 of the first door structure 40 and move synchronously with the door body 41, and the other first detector 51 of the first detection assembly 50 may be fixed to the circumference of the corresponding first feeding port 31. Alternatively, the first door structure 40 may be a single-opening door, one of the first detectors 51 of the first detection assembly 50 may be installed on the first door structure 40 and move synchronously with the first door structure 40, and the other first detector 51 of the first detection assembly 50 may be fixed to the circumference of the corresponding first feeding port 31.

[0081] In some embodiments of the present application, the first detection component 50 is connected to the control circuit (control system) of the battery production system by signal. That is, the two first detectors 51 of the first detection component 50 are connected to the control circuit of the battery production system, so that the detection data of the first detection component 50 can be transmitted to the control circuit of the battery production system by signal. By adopting the above scheme, the detection data of the first detection component 50 can be transmitted to the control circuit of the battery production system by signal, that is, the confirmation result of "whether the first door structure 40 is closed in place" can be sent to the control circuit of the battery production system. Based on this, according to the detection result of the first detection component 50, under normal circumstances (that is, when the first door structure 40 should close the corresponding first feeding port 31, and the first detection component 50 detects that "the first door structure 40 is closed in place"), the control circuit of the battery production system can normally maintain the normal operation of the laser welding equipment (especially the normal laser operation), so as to take into account the maintenance of the operating efficiency and reliability of the laser welding equipment. On the contrary, in abnormal situations (for example, when any of the first detectors 51 fails, or when the first door structure 40 should close the corresponding first feeding port 31, but the first detection component 50 detects that "the first door structure 40 is not closed in place"), the control circuit of the battery production system can cut off the power of the laser welding equipment to limit the laser operation of the laser welding equipment and hinder the generation and escape of the laser, thereby improving the reliability of the laser welding equipment under abnormal conditions.

[0082] Of course, in other embodiments, the first detection component 50 can be connected to other components of the laser welding equipment and other equipment of the battery production system through signals.

[0083] See also Figure 1 , Figure 2 , Figure 4 In some embodiments of the present application, a loading fixture 60 is provided on the first feeding mechanism 20, and a frame structure 70 is provided around the circumference of the loading fixture 60. In the gravity direction, the first feeding port 31 is provided on the top wall of the first protective cover 30, and when the loading fixture 60 is directly opposite to the first feeding port 31, the frame structure 70 is provided below the first feeding port 31 and covers the outer circumference of the first feeding port 31.

[0084] It should be noted that the material loading fixture 60 is a fixture for loading materials. The first feeding mechanism 20 can drive the material loading fixture 60 to move back and forth in the outer cover 10 and the first protective cover 30. The structure, shape and size of the material loading fixture 60 can be set as required.

[0085] The frame structure 70 is disposed around the circumference of the material carrier 60. The frame structure 70 is installed on the material carrier 60. In some embodiments, the frame structure 70 includes a plurality of side plates connected end to end in sequence, and the plurality of side plates are connected to the circumference of the material carrier 60 in a one-to-one correspondence.

[0086] The first protective cover 30 has a top side and a bottom side opposite to each other along the gravity direction. The first feeding port 31 is provided on the top wall of the first protective cover 30. The first door structure 40 mainly opens the first feeding port 31 when the material loading fixture 60 moves to the position directly below the first feeding port 31, so that the material can be easily taken and placed on the material loading fixture 60 through the first feeding port 31 along the gravity direction.

[0087] When the material carrier 60 is directly opposite to the first feed port 31, that is, when the material carrier 60 moves to directly below the first feed port 31, the frame structure 70 will be directly opposite to the below of the first feed port 31, and the frame structure 70 will surround and cover the outer periphery of the first feed port 31 to prevent the laser from being diffusely reflected through the gap between the material carrier 60 and the top wall of the first protective cover 30 and escaping from the first feed port 31.

[0088] By adopting the above solution, when the material carrier 60 moves to the position directly below the first feeding port 31, the frame structure 70 arranged around the outer periphery of the material carrier 60 can be covered below the first feeding port 31 on the outer periphery of the first feeding port 31. Based on this, the frame structure 70 can be used to prevent the laser from being diffusely reflected through the gap between the material carrier 60 and the top wall of the first protective cover 30 and escaping from the first feeding port 31, thereby reducing the risk of the laser escaping from the first feeding port 31 and improving the reliability of the laser welding equipment.

[0089] See also Figure 1 , Figure 2 , Figure 4 In some embodiments of the present application, when the material loading fixture 60 is facing the first feeding port 31, the distance between the top surface of the frame structure 70 and the top wall of the first protective cover 30 is 0-2 mm.

[0090] It should be noted that the installation position of the frame structure 70 relative to the material carrier 60 is adjustable along the gravity direction. In some embodiments, the frame structure 70 includes a plurality of side panels connected end to end in sequence, and the side panels are provided with waist-shaped holes extending along the gravity direction. The side panels are connected to the corresponding sides of the material carrier 60 by screws passing through the waist-shaped holes. By adjusting the position of the screws in the waist-shaped holes, the installation position of the frame structure 70 relative to the material carrier 60 can be adjusted (along the gravity direction).

[0091] Based on this, along the gravity direction, by adjusting the installation position of the frame structure 70 relative to the material loading fixture 60, the distance between the top surface of the frame structure 70 and the top wall of the first protective cover 30 (corresponding to the distance between the top surface of the frame structure 70 and the first feeding port 31) can be 0-2 mm. For example, the distance between the top surface of the frame structure 70 and the top wall of the first protective cover 30 can be 0 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, etc.

[0092] By adopting the above solution, a small gap can be formed between the top surface of the frame structure 70 and the top wall of the first protective cover 30, and the gap is less than or equal to 2 mm. Based on this, when the material carrier 60 moves to the position directly below the first feeding port 31, the risk of the laser being diffusely reflected to the first feeding port 31 through the gap between the top surface of the frame structure 70 and the top wall of the first protective cover 30 can be reduced, and the risk of the laser escaping from the first feeding port 31 can be reduced, thereby improving the reliability of the laser welding equipment.

[0093] See also Figure 1 , Figure 2 In some embodiments of the present application, two first feeding mechanisms 20 are provided, and the two first feeding mechanisms 20 are arranged side by side.

[0094] It should be noted that there are two first feeding mechanisms 20, which are arranged side by side and spaced apart in the horizontal direction. The two first feeding mechanisms 20 have the same function, and are both used for loading or unloading, so that the two first feeding mechanisms 20 can be used alternately (i.e., alternately feeding). Correspondingly, corresponding to the two first feeding mechanisms 20, there are two first feeding ports 31, and there are two first door structures 40.

[0095] By adopting the above solution, two first feeding mechanisms 20 can be provided so as to alternately use the two first feeding mechanisms 20 for feeding. Based on this, uninterrupted feeding can be realized, feeding efficiency can be improved, the risk of affecting the operating efficiency of the laser welding equipment due to the feeding interval can be reduced, and the operating efficiency of the laser welding equipment can be improved.

[0096] Of course, in other embodiments, only one first feeding mechanism 20 may be provided, or at least three first feeding mechanisms 20 may be provided.

[0097] See also Figure 1 , Figure 5 , Figure 6 , Figure 7In some embodiments of the present application, the laser welding device includes a second protective cover 80, a second feeding mechanism 90, a second door structure 100 and a third door structure 110. Part of the second protective cover 80 extends into the outer cover 10 and the other part extends out of the outer cover 10. The part of the second protective cover 80 extending into the outer cover 10 is provided with a second feeding port 81, and the part of the second protective cover 80 extending out of the outer cover 10 is provided with a third feeding port 82. The second feeding mechanism 90 is arranged in the second protective cover 80, and the feeding path of the second feeding mechanism 90 passes through the second feeding port 81 and the third feeding port 82. One of the second feeding mechanism 90 and the first feeding mechanism 20 is used for loading, and the other of the two is used for discharging. The second door structure 100 is arranged corresponding to the second feeding port 81, and is used to open and close the second feeding port 81. The third door structure 110 is arranged corresponding to the third feeding port 82, and is used to open and close the third feeding port 82.

[0098] It should be noted that the second protective cover 80 is a protective cover arranged outside the second feeding mechanism 90. The second protective cover 80 and the first protective cover 30 can be arranged on different sides (e.g., opposite sides) of the outer cover 10. The second protective cover 80 can reliably prevent the laser therein from escaping outward. The structure, shape, and size of the second protective cover 80 can be set as required, and the second protective cover 80 can be, but is not limited to, a rectangular parallelepiped.

[0099] Part of the second protective cover 80 is inside the outer cover 10, and the other part of the second protective cover 80 extends outside the outer cover 10. The part of the second protective cover 80 inside the outer cover 10 is provided with a second feeding port 81, and the second feeding port 81 connects the inside of the outer cover 10 with the inside of the second protective cover 80. The part of the second protective cover 80 outside the outer cover 10 is provided with a third feeding port 82, and the third feeding port 82 connects the inside of the second protective cover 80 with the outside of the laser welding equipment.

[0100] The second feeding mechanism 90 is disposed in the second protective cover 80 , and is used to transfer materials from the second feeding port 81 to the third feeding port 82 , or to transfer materials from the third feeding port 82 to the second feeding port 81 .

[0101] One of the second feeding mechanism 90 and the first feeding mechanism 20 is used for loading, and the other one is used for discharging. That is, when the first feeding mechanism 20 is used for loading, the second feeding mechanism 90 can be used for discharging, that is, the welded material can be transferred to the second feeding mechanism 90 via the second feeding port 81, and then transferred to the third feeding port 82 via the second feeding mechanism 90, and then transferred to the outside of the laser welding device via the third feeding port 82, so as to facilitate the output of the welded material.

[0102] On the contrary, when the first feeding mechanism 20 is used for discharging materials, the second feeding mechanism 90 can be used for loading materials, that is, the material to be welded can be transferred to the second feeding mechanism 90 via the third feeding port 82, and then transmitted to the second feeding port 81 via the second feeding mechanism 90, and then transferred to the outer cover 10 via the second feeding port 81, so as to facilitate the laser welding mechanism and other mechanisms in the outer cover 10 to perform laser welding operations on the materials.

[0103] The second feeding mechanism 90 may be, but is not limited to, a conveyor belt, a chain conveyor, a pneumatic feeding mechanism, an electric feeding mechanism, a magnetic feeding mechanism, and the like.

[0104] The second feeding port 81 and the third feeding port 82 may be disposed on different wall portions of the second protective cover 80, or may be disposed on the same wall portion of the second protective cover 80. In some embodiments, the second feeding port 81 may be disposed on the top wall of the second protective cover 80 along the gravity direction, and the third feeding port 82 may be disposed on the peripheral wall of the second protective cover 80.

[0105] The shape and size of the second feeding port 81 can be set as required, and the second feeding port 81 can be, but not limited to, a rectangular port. The shape and size of the third feeding port 82 can be set as required, and the third feeding port 82 can be, but not limited to, a rectangular port.

[0106] It should also be noted that a second door structure 100 is correspondingly installed on the outer side (or inner side) of the second feeding port 81, and the second door structure 100 is used to open or close the second feeding port 81. That is, the second door structure 100 can open the second feeding port 81, so as to place the material on the second feeding mechanism 90 or take it away from the second feeding mechanism 90 through the second feeding port 81. The second door structure 100 can also close the second feeding port 81 to prevent the laser in the outer cover 10 from escaping from the second feeding port 81 to the second protective cover 80. Among them, the second door structure 100 can be a single door or a double door. The second door structure 100 can rotate or move in a plane relative to the second feeding port 81 to open and close the corresponding second feeding port 81. The second door structure 100 can be opened and closed manually or automatically. In the case where the second door structure 100 is automatically opened and closed, an electric motor, a hydraulic or pneumatic drive mechanism, a linear motor drive mechanism, etc. can be used to drive the second door mechanism to open and close automatically.

[0107] A third door structure 110 is correspondingly installed on the outer side (or inner side) of the third feeding port 82, and the third door structure 110 is used to open or close the third feeding port 82. That is, the third door structure 110 can open the third feeding port 82, so as to place the material on the second feeding mechanism 90 or take it away from the second feeding mechanism 90 through the third feeding port 82. The third door structure 110 can also close the third feeding port 82 to prevent the laser in the second protective cover 80 from escaping from the third feeding port 82. Among them, the third door structure 110 can be a single door or a double door. The third door structure 110 can rotate or move in a plane relative to the third feeding port 82 to open and close the corresponding third feeding port 82. The third door structure 110 can be opened and closed manually or automatically. In the case where the third door structure 110 is automatically opened and closed, an electric motor, a hydraulic or pneumatic drive mechanism, a linear motor drive mechanism, etc. can be used to drive the third door mechanism to open and close automatically.

[0108] By adopting the above scheme, when the first feeding mechanism 20 is used for loading, the second door structure 100 can first open the second feeding port 81, so as to transfer the material from the outer cover 10 to the second feeding mechanism 90 in the second protective cover 80 through the second feeding port 81; then the material is transferred from the second feeding port 81 to the third feeding port 82 through the second feeding mechanism 90; and then the third door structure 110 opens the third feeding port 82, so as to transfer the material from the second protective cover 80 to the outside of the laser welding equipment through the third feeding port 82; thereby, the material is discharged through the second feeding mechanism 90. On the contrary, when the first feeding mechanism 20 is used for discharging, the third door structure 110 can be first opened to open the third feeding port 82, so as to transfer the material from the outside of the laser welding equipment to the second feeding mechanism 90 in the second protective cover 80 through the third feeding port 82; then the material is transferred from the third feeding port 82 to the second feeding port 81 through the second feeding mechanism 90; then the second door structure 100 opens the second feeding port 81, so as to transfer the material from the second feeding mechanism 90 to other mechanisms (such as laser welding mechanisms) in the outer cover 10 through the second feeding port 81; thus, the material is loaded through the second feeding mechanism 90. In this way, the laser welding equipment can realize a series of automated processes such as loading, welding, and discharging, and the operating efficiency and performance of the laser welding equipment can be improved.

[0109] On this basis, at the location where the second feeding mechanism 90 is set, the laser welding equipment can close the second feeding port 81 through the second door structure 100 to prevent the laser in the outer cover 10 from escaping from the second feeding port 81 to the second protective cover 80; the laser in the second protective cover 80 can be prevented from escaping outwards; the third feeding port 82 can be closed by the third door structure 110 to prevent the laser in the second protective cover 80 from escaping outwards from the third feeding port 82. Based on this, at the location where the second feeding mechanism 90 is set, the laser welding equipment can prevent the laser from escaping in multiple dimensions and directions. Therefore, in combination with the above embodiments, the laser welding equipment can be specially designed with laser protection at the loading and unloading locations to reduce the risk of laser escaping from the loading and unloading locations of the laser welding equipment, thereby optimizing and improving the reliability of the use of the laser welding equipment.

[0110] Of course, in other embodiments, the second protective cover 80, the second feeding mechanism 90, the second door structure 100 and the third door structure 110 may be omitted, and two sets of the first feeding mechanism 20, the first protective cover 30 and the first door structure 40 may be directly provided for loading and unloading respectively.

[0111] See also Figure 5 , Figure 6 , Figure 7 In some embodiments of the present application, the second door structure 100 opens and closes the second feeding port 81 when the third door structure 110 closes the third feeding port 82 , and the third door structure 110 opens and closes the third feeding port 82 when the second door structure 100 closes the second feeding port 81 .

[0112] It should be noted that the second door structure 100 and the third door structure 110 can adopt an AB door interlocking design. That is, when the third door structure 110 closes the third feeding port 82, the second door structure 100 can open and close the second feeding port 81; and when the third door structure 110 opens the third feeding port 82, the second door structure 100 is restricted from opening and closing the second feeding port 81. Similarly, when the second door structure 100 closes the second feeding port 81, the third door structure 110 can open and close the third feeding port 82; and when the second door structure 100 opens the second feeding port 81, the third door structure 110 is restricted from opening and closing the third feeding port 82.

[0113] That is, there may be three situations: “the second door structure 100 opens the second feeding port 81 and the third door structure 110 closes the third feeding port 82”, “the second door structure 100 closes the second feeding port 81 and the third door structure 110 opens the third feeding port 82”, and “the second door structure 100 closes the second feeding port 81 and the third door structure 110 closes the third feeding port 82”, which restricts the situation of “the second door structure 100 opens the second feeding port 81 and the third door structure 110 opens the third feeding port 82” from occurring.

[0114] By adopting the above solution, the second door structure 100 can be allowed to open and close the second feeding port 81 when the third door structure 110 closes the third feeding port 82, and the third door structure 110 can be allowed to open and close the third feeding port 82 when the second door structure 100 closes the second feeding port 81, and the situation of "the second door structure 100 opens the second feeding port 81 and the third door structure 110 opens the third feeding port 82" can be restricted. Based on this, the risk of laser escaping quickly and directly from the second feeding port 81 and the third feeding port 82 opened at the same time can be reduced on the basis of maintaining the normal operation of the laser welding equipment (including laser welding, loading, unloading and other operations), thereby preventing laser escape and optimizing the reliability of the laser welding equipment.

[0115] See also Figure 5 , Figure 6 , Figure 7 In some embodiments of the present application, the laser welding equipment includes a second detection component 120 arranged corresponding to the second door structure 100, and the second detection component 120 includes two second detectors 121, at least one of the two second detectors 121 is installed on the second door structure 100, and the two second detectors 121 are aligned with each other for detection to determine the opening and closing state of the second door structure 100.

[0116] It should be noted that at least one second detection component 120 may be correspondingly provided for each second door structure 100 , and the second detection component 120 may be used to detect whether the second door structure 100 is fully closed.

[0117] The second detection assembly 120 includes two second detectors 121, one or two second detectors 121 are installed on the second door structure 100 and can move synchronously with the second door structure 100. When the second door structure 100 closes the corresponding second feeding port 81, the two second detectors 121 can detect each other to determine whether the second door structure 100 is fully closed. On the contrary, if the two second detectors 121 are not detected in alignment, it can be determined that the second door structure 100 is not fully closed.

[0118] For example, in some embodiments, the second door structure 100 is a single-opening door, one of the second detectors 121 of the second detection component 120 can be installed on the second door structure 100 and move synchronously with the second door structure 100, and the other second detector 121 of the second detection component 120 can be fixed to the periphery of the corresponding second feeding port 81. When the second door structure 100 closes the second feeding port 81, the two second detectors 121 can detect each other to determine whether the "second door structure 100 is closed in place."

[0119] In other embodiments, the second door structure 100 is a double door, and the two second detectors 121 of the second detection assembly 120 can be respectively installed on the two doors of the second door structure 100, and the two second detectors 121 can each move synchronously with the two doors. When the two doors of the second door structure 100 jointly close the second feeding port 81, the two second detectors 121 can detect each other to determine whether the "second door structure 100 is closed in place."

[0120] In other embodiments, the second door structure 100 is a double door, one of the second detectors 121 of the second detection assembly 120 can be installed on a door of the second door structure 100 and move synchronously with the door, and the other second detector 121 of the second detection assembly 120 can be fixed to the periphery of the corresponding second feeding port 81. When the two doors of the second door structure 100 jointly close the second feeding port 81, the two second detectors 121 can detect each other to determine whether the "second door structure 100 is closed in place."

[0121] The second detector 121 may be installed by, but is not limited to, bonding, welding, or clamping.

[0122] The second detector 121 may adopt various types of sensors, especially non-contact sensors, such as proximity sensors, photoelectric sensors, ultrasonic sensors, magnetic sensors, laser sensors, radar sensors, etc.

[0123] By adopting the above scheme, when the second door structure 100 closes the corresponding second feeding port 81, the two second detectors 121 of the second detection assembly 120 corresponding to the second door structure 100 can be detected to detect whether the second door structure 100 is closed in place. Based on this, a confirmation mechanism for the state of the second door structure 100 can be formed, which can facilitate the laser welding equipment to take corresponding actions and measures according to the confirmation of the state of the second door structure 100 (for example, the laser welding equipment can limit the laser operation when the second door structure 100 is not closed in place, and for example, the laser welding equipment can perform the laser operation normally when the second door structure 100 is closed in place, etc.), so as to maintain and improve the reliability of the laser welding equipment.

[0124] In some embodiments, the second detection component 120 is connected to the control circuit of the battery production system by signal. That is, the two second detectors 121 of the second detection component 120 are connected to the control circuit of the battery production system, so that the detection data of the second detection component 120 can be transmitted to the control circuit of the battery production system by signal. By adopting the above scheme, the detection data of the second detection component 120 can be transmitted to the control circuit of the battery production system by signal, that is, the confirmation result of "whether the second door structure 100 is closed in place" can be sent to the control circuit of the battery production system. Based on this, according to the detection result of the second detection component 120, under normal circumstances (for example, "the second door structure 100 should close the second feeding port 81, and the second detection component 120 detects that the second door structure 100 is closed in place", etc.), the control circuit of the battery production system can normally maintain the normal operation of the laser welding equipment (especially the normal laser operation), so as to take into account the maintenance of the operating efficiency and reliability of the laser welding equipment. On the contrary, in abnormal situations (for example, "the second door structure 100 should close the second feeding port 81, but the second detection component 120 detects that the second door structure 100 is not closed in place", "the second detector 121 fails", etc.), the control circuit of the battery production system can cut off the power of the laser welding equipment to limit the laser operation of the laser welding equipment and hinder the generation and escape of the laser, thereby improving the reliability of the laser welding equipment under abnormal conditions.

[0125] See also Figure 5 , Figure 6 , Figure 7 In some embodiments of the present application, the laser welding equipment includes a third detection component 130 arranged corresponding to the third door structure 110, and the third detection component 130 includes two third detectors 131, at least one of the two third detectors 131 is installed on the third door structure 110, and the two third detectors 131 are aligned with each other for detection to determine the opening and closing state of the third door structure 110.

[0126] It should be noted that at least one third detection component 130 may be correspondingly provided for each third door structure 110 , and the third detection component 130 may be used to detect whether the third door structure 110 is fully closed.

[0127] The third detection assembly 130 includes two third detectors 131, one or two third detectors 131 are installed on the third door structure 110 and can move synchronously with the third door structure 110. When the third door structure 110 closes the corresponding third feeding port 82, the two third detectors 131 can detect each other to determine whether the third door structure 110 is fully closed. On the contrary, if the two third detectors 131 are not detected in alignment, it can be determined that the third door structure 110 is not fully closed.

[0128] For example, in some embodiments, the third door structure 110 is a single-opening door, one of the third detectors 131 of the third detection assembly 130 can be installed on the third door structure 110 and move synchronously with the third door structure 110, and the other third detector 131 of the third detection assembly 130 can be fixed to the periphery of the corresponding third feeding port 82. When the third door structure 110 closes the third feeding port 82, the two third detectors 131 can detect each other to determine whether the "third door structure 110 is closed in place."

[0129] In other embodiments, the third door structure 110 is a double door, and the two third detectors 131 of the third detection assembly 130 can be respectively installed on the two doors of the third door structure 110, and the two third detectors 131 can each move synchronously with the two doors. When the two doors of the third door structure 110 jointly close the third feeding port 82, the two third detectors 131 can detect each other to determine whether the "third door structure 110 is closed in place."

[0130] In other embodiments, the third door structure 110 is a double door, one of the third detectors 131 of the third detection assembly 130 can be installed on a door of the third door structure 110 and move synchronously with the door, and the other third detector 131 of the third detection assembly 130 can be fixed to the periphery of the corresponding third feeding port 82. When the two doors of the third door structure 110 jointly close the third feeding port 82, the two third detectors 131 can detect each other to determine whether the "third door structure 110 is closed in place."

[0131] The third detector 131 may be installed by, but is not limited to, bonding, welding, or clamping.

[0132] The third detector 131 may adopt various types of sensors, especially non-contact sensors, such as proximity sensors, photoelectric sensors, ultrasonic sensors, magnetic sensors, laser sensors, radar sensors, etc.

[0133] By adopting the above scheme, when the third door structure 110 closes the corresponding third feeding port 82, the two third detectors 131 of the third detection assembly 130 corresponding to the third door structure 110 can be detected to detect whether the third door structure 110 is fully closed. Based on this, a confirmation mechanism for the state of the third door structure 110 can be formed, which can facilitate the laser welding equipment to take corresponding actions and measures according to the confirmation of the state of the third door structure 110 (for example, the laser welding equipment can limit the laser operation when the third door structure 110 is not fully closed, and for example, the laser welding equipment can normally perform the laser operation when the third door structure 110 is fully closed, etc.), so as to maintain and improve the reliability of the laser welding equipment.

[0134] In some embodiments, the third detection component 130 is connected to the control circuit of the battery production system by signal. That is, the two third detectors 131 of the third detection component 130 are connected to the control circuit of the battery production system, so that the detection data of the third detection component 130 can be transmitted to the control circuit of the battery production system by signal. By adopting the above scheme, the detection data of the third detection component 130 can be transmitted to the control circuit of the battery production system by signal, that is, the confirmation result of "whether the third door structure 110 is closed in place" can be sent to the control circuit of the battery production system. Based on this, according to the detection result of the third detection component 130, under normal circumstances (for example, "the third door structure 110 should close the third feeding port 82, and the third detection component 130 detects that the third door structure 110 is closed in place", etc.), the control circuit of the battery production system can normally maintain the normal operation of the laser welding equipment (especially the normal laser operation), so as to take into account the maintenance of the operating efficiency and reliability of the laser welding equipment. On the contrary, in abnormal situations (for example, "the third door structure 110 should close the third feeding port 82, but the third detection component 130 detects that the third door structure 110 is not closed in place", "the third detector 131 fails", etc.), the control circuit of the battery production system can cut off the power of the laser welding equipment to limit the laser operation of the laser welding equipment and hinder the generation and escape of the laser, thereby improving the reliability of the laser welding equipment under abnormal conditions.

[0135] Of course, in other embodiments, the second detection component 120 and the third detection component 130 can be connected to other components of the laser welding equipment and other equipment of the battery production system as required.

[0136] See also Figure 1 , Figure 5 In some embodiments of the present application, the inner side surface of at least one of the outer cover 10, the first protective cover 30, the first door structure 40, the second protective cover 80, the second door structure 100, and the third door structure 110 is a black light-absorbing surface.

[0137] It should be noted that part or all of the outer cover 10, the first protective cover 30, the first door structure 40, the second protective cover 80, the second door structure 100, and the third door structure 110 are subjected to black light-absorbing treatment (e.g., spraying black paint, chemical blackening, etc.) on the inner side surface thereof, so that the inner side surface thereof forms a black light-absorbing surface. The black light-absorbing surface is a surface with high light absorption rate and low reflectivity.

[0138] By adopting the above scheme, by making the inner side surface of at least one of the outer cover 10, the first protective cover 30, the first door structure 40, the second protective cover 80, the second door structure 100, and the third door structure 110 a black light-absorbing surface, it is possible to absorb the laser through the black light-absorbing surface to reduce the reflection, diffuse reflection and escape of the laser, thereby improving the reliability of the laser welding equipment under abnormal conditions.

[0139] See also Figure 1 , Figure 8 In some embodiments of the present application, a maintenance door 140 is provided on the outer cover 10 , and a safety lock is provided at the edge of the maintenance door 140 .

[0140] It should be noted that the maintenance door 140 is a door that maintenance personnel can use to enter and exit the outer cover 10. Figure 1 Only one wall of the housing 10 is shown. Figure 1 The position of the maintenance door 140 on the outer cover 10 is not shown in the figure, and the maintenance door 140 can be arranged on any side wall along the circumference of the outer cover 10. The maintenance door 140 can be opened and closed. A safety lock is installed on the maintenance door 140, and the installation method of the safety lock can be adopted but not limited to bolt connection, bonding, welding, etc.

[0141] The safety lock has a relative locked state and an unlocked state. When the maintenance door 140 is closed, the safety lock can be switched to the locked state, and the safety lock can be locked and matched with the outer cover 10 in the locked state to lock the maintenance door 140 in the closed state and restrict the opening of the maintenance door 140. Based on this, the maintenance door 140 can be stabilized in the closed state, which is conducive to maintaining the operation reliability and use reliability of the laser welding equipment during the non-shutdown maintenance period (especially during operation).

[0142] During the shutdown maintenance period of the laser welding equipment (including the later maintenance period), the safety lock can be switched from the locked state to the unlocked state. In the unlocked state, the safety lock can be unlocked from the outer cover 10 to allow the maintenance door 140 to be opened. Based on this, it is convenient for maintenance personnel to enter and exit the outer cover 10 through the opened maintenance door 140 to perform later maintenance on the mechanism inside the outer cover 10.

[0143] Among them, the type of security lock can be flexibly set, and the security lock can adopt but is not limited to adopting electric control lock 150 (such as electromagnetic lock, electric bolt lock, etc.), mechanical lock (such as padlock, mortise lock, etc.), electronic lock (such as password lock, fingerprint lock, etc.), etc.

[0144] By adopting the above solution, during the shutdown maintenance of the laser welding equipment, the safety lock can be switched to the unlocked state to allow the maintenance door 140 to be opened, so that maintenance personnel can enter and exit the outer cover 10 through the opened maintenance door 140 to perform subsequent maintenance on the mechanism in the outer cover 10. Conversely, during the non-shutdown maintenance period of the laser welding equipment (especially during operation), the safety lock can be switched to the locked state to lock the maintenance door 140 in a closed state and restrict the opening of the maintenance door 140. Based on this, the maintenance door 140 can be stabilized in a closed state, which is conducive to maintaining the operation reliability and use reliability of the laser welding equipment during the non-shutdown maintenance period.

[0145] See also Figure 1 , Figure 8 In some embodiments of the present application, the safety lock is an electric lock 150 , and an unlock button 160 is provided on the outer side of the maintenance door 140 , and the unlock button 160 is connected to the electric lock 150 by signal.

[0146] It should be noted that the electric lock 150 is an electronic lock that is driven by electricity to achieve locking and unlocking. In some embodiments, the electric lock 150 uses an electromagnetic lock, which controls locking and unlocking through electromagnetic force. Of course, in other embodiments, the electric lock 150 can use an electric bolt lock, an electric strike, etc.

[0147] An unlock button 160 is provided on the outside of the maintenance door 140, and the unlock button 160 is connected to the electric lock 150 by signal. The unlock button 160 can be pressed by a person, and when the unlock button 160 is pressed, an unlock signal can be sent to the electric lock 150 to drive the electric lock 150 to switch from a locked state to an unlocked state.

[0148] By adopting the above solution, during the shutdown maintenance of the laser welding equipment, the personnel can conveniently and quickly press the unlocking button 160 from the outside of the maintenance door 140 to send an unlocking signal to the electric lock 150 via the unlocking button 160, and drive the electric lock 150 to switch from the locked state to the unlocked state. Based on this, the unlocking operation of the maintenance door 140 can be made simple and quick, the time consumed for unlocking can be reduced, and it is convenient for personnel to enter and exit the outer cover 10 through the unlocked maintenance door 140 to perform later maintenance on the mechanism inside the outer cover 10.

[0149] Of course, in other embodiments, depending on the type of safety lock, other methods may be used to trigger unlocking.

[0150] See also Figure 1 , Figure 8 In some embodiments of the present application, at least one of the unlock button 160 and the electric lock 150 is signal-connected to a control loop of the battery production system.

[0151] It should be noted that, in some embodiments, the unlock button 160 signal is connected to the control circuit of the battery production system, that is, the unlock button 160 is connected to the control circuit of the battery production system, so that the unlock signal sent by the unlock button 160 when being pressed can be transmitted to the control circuit of the battery production system.

[0152] In some embodiments, the electric lock 150 signal is connected to the control circuit of the battery production system, that is, the electric lock 150 is connected to the control circuit of the battery production system, so that the status (locked status and unlocked status) of the electric lock 150 can be timely fed back to the control circuit of the battery production system.

[0153] In some embodiments, the unlock button 160 and the electric lock 150 are both connected to the control circuit of the battery production system. That is, the unlock signal sent by the unlock button 160 when pressed can be transmitted to the control circuit of the battery production system, and the state (locked state and unlocked state) of the electric lock 150 can also be fed back to the control circuit of the battery production system in a timely manner.

[0154] By adopting the above solution, the "unlocking signal of the unlocking button 160" and the "signal of the electric lock 150 switching to the unlocked state" can be used as a trigger mechanism for whether the control circuit of the battery production system controls the laser welding equipment to shut down. That is, when the control circuit of the battery production system receives the "unlocking signal of the unlocking button 160" or the "signal of the electric lock 150 switching to the unlocked state", the control circuit of the battery production system can cut off the power of the laser welding equipment to limit the laser operation of the laser welding equipment, and shut down the laser welding equipment to improve the reliability during the later maintenance period.

[0155] Among them, when the electric lock 150 signal is connected to the control circuit of the battery production system, if the laser welding equipment is originally in a shutdown state, and the control circuit of the battery production system receives the signal that the "electric lock 150 switches to a locked state", the control circuit can control the laser welding equipment to resume normal operation to maintain the operating efficiency of the laser welding equipment and the production efficiency of the battery production system.

[0156] See also Figure 1 , Figure 8 In some embodiments of the present application, a locking button 170 is provided on the outer side of the maintenance door 140 , and the locking button 170 is connected to the electric control lock 150 by signal.

[0157] It should be noted that a lock button 170 is provided on the outer side of the maintenance door 140, and the lock button 170 is connected to the electric lock 150 by signal. The lock button 170 can be pressed by a person, and when the lock button 170 is pressed, a lock signal can be sent to the electric lock 150 to drive the electric lock 150 to switch from an unlocked state to a locked state.

[0158] By adopting the above solution, when the maintenance door 140 is reset from the open state to the closed state, the personnel can conveniently and quickly press the lock button 170 from the outside of the maintenance door 140 to send a lock signal to the electric lock 150 via the lock button 170, and drive the electric lock 150 to reset and switch from the unlocked state to the locked state. Based on this, the locking operation of the maintenance door 140 can be simple and fast, and the maintenance door 140 can be quickly and reliably locked in the closed state, which is conducive to maintaining the operation reliability and use reliability of the laser welding equipment during the non-shutdown maintenance period.

[0159] Of course, in other embodiments, the electric lock 150 can be automatically reset to the locked state when the maintenance door 140 is reset from the open state to the closed state. In this case, the lock button 170 can be omitted.

[0160] Of course, in other embodiments, depending on the type of safety lock, other methods may be used to trigger the lock.

[0161] See also Figure 1-Figure 8 In summary, the present application provides a specific example of a laser welding device. The laser welding device includes an outer cover 10, a first feeding mechanism 20, a first protective cover 30, a first door structure 40, a first detection assembly 50, a material loading fixture 60, a frame structure 70, a second protective cover 80, a second feeding mechanism 90, a second door structure 100, a third door structure 110, a second detection assembly 120, a third detection assembly 130, a maintenance door 140, an electric lock 150, an unlocking button 160, and a locking button 170.

[0162] The first protective cover 30 is connected to the peripheral side of the outer cover 10. A portion of the first feeding mechanism 20 extends into the outer cover 10 and another portion extends into the first protective cover 30. Two first feeding mechanisms 20 are provided, and the two first feeding mechanisms 20 are arranged side by side and spaced apart. The two first feeding mechanisms 20 are both used for feeding, and the two first feeding mechanisms 20 feed alternately. Figure 1 As shown, one loading jig 60 just moves to the portion of the first feeding mechanism 20 extending out of the first protective cover 30, and the other loading jig 60 just moves to the first protective cover 30 and is hidden in the figure, so that the two loading jigs 60 alternately replace and load materials.

[0163] In the direction of gravity, the top wall of the first protective cover 30 is provided with two first feeding ports 31, and the two first feeding ports 31 are arranged one-to-one with the two first feeding mechanisms 20. The first feeding mechanism 20 is provided with a loading fixture 60 for loading materials, and a frame structure 70 is provided around the side ring of the loading fixture 60. In the direction of gravity, the spacing between the frame structure 70 and the top wall of the first protective cover 30 is less than or equal to 2 mm, that is, 0~2 mm.

[0164] There are two first door structures 40, which are installed one-to-one on the outsides of the two first feeding ports 31. The first door structure 40 adopts a double-door design, and includes two door bodies 41, which open and close the corresponding first feeding ports 31 together.

[0165] There are two first detection components 50, and the two first detection components 50 are arranged in one-to-one correspondence with the two first door structures 40. The first detection component 50 includes two first detectors 51, and the two first detectors 51 are respectively installed on the two door bodies 41 corresponding to the first door structure 40, and can move synchronously with the door bodies 41 on which they are installed. In the case where the two door bodies 41 jointly close the corresponding first feeding port 31, the two first detectors 51 can detect each other in alignment to determine whether "the first door structure 40 is closed in place". On the contrary, if the two first detectors 51 are not detected in alignment, it can be used to determine that "the first door structure 40 is not closed in place". The signal of the first detection component 50 is connected to the control circuit of the battery production system.

[0166] The second protective cover 80 and the first protective cover 30 are arranged on different sides of the outer cover 10. A portion of the second protective cover 80 extends into the outer cover 10 and another portion extends out of the outer cover 10. A second feeding port 81 is provided on the top wall of the portion of the second protective cover 80 extending into the outer cover 10, and a third feeding port 82 is provided on the peripheral wall of the portion of the second protective cover 80 extending out of the outer cover 10. A second feeding mechanism 90 is arranged in the second protective cover 80, and a feeding path of the second feeding mechanism 90 passes through the second feeding port 81 and the third feeding port 82. The second feeding mechanism 90 is used to transfer materials from the second feeding port 81 to the third feeding port for discharging.

[0167] The second door structure 100 is correspondingly installed on the outer side of the second feeding port 81, and the second door structure 100 adopts a single-door design for opening and closing the second feeding port 81. The third door structure 110 is correspondingly installed on the outer side of the third feeding port 82, and the third door structure 110 adopts a single-door design for opening and closing the third feeding port 82. The second door structure 100 and the third door structure 110 can adopt an AB door interlocking design. When the third door structure 110 closes the third feeding port 82, the second door structure 100 can open and close the second feeding port 81; and when the third door structure 110 opens the third feeding port 82, the second door structure 100 is restricted from opening and closing the second feeding port 81. When the second door structure 100 closes the second feeding port 81, the third door structure 110 can open and close the third feeding port 82; and when the second door structure 100 opens the second feeding port 81, the third door structure 110 is restricted from opening and closing the third feeding port 82.

[0168] The second detection assembly 120 is arranged corresponding to the second door structure 100, and the second detection assembly 120 includes two second detectors 121, one of which is installed on the second door structure 100 and can move synchronously with the second door structure 100, and the other second detector 121 can be fixed on the circumference of the corresponding second feeding port 81. When the second door structure 100 closes the corresponding second feeding port 81, the two second detectors 121 can detect each other in alignment to determine whether the "second door structure 100 is closed in place". On the contrary, if the two second detectors 121 are not detected in alignment, it can be determined that the "second door structure 100 is not closed in place".

[0169] The third detection assembly 130 is arranged corresponding to the third door structure 110, and the third detection assembly 130 includes two third detectors 131, one of which can be installed on the third door structure 110 and move synchronously with the third door structure 110, and the other third detector 131 can be fixed on the peripheral edge of the corresponding third feeding port 82. When the third door structure 110 closes the corresponding third feeding port 82, the two third detectors 131 can detect each other in alignment to determine whether the "third door structure 110 is closed in place". On the contrary, if the two third detectors 131 are not detected in alignment, it can be determined that the "third door structure 110 is not closed in place".

[0170] The second detection component 120 and the third detection component 130 are both signal-connected to the control loop of the battery production system.

[0171] The inner side surfaces of the outer cover 10, the first protective cover 30, the first door structure 40, the second protective cover 80, the second door structure 100, and the third door structure 110 are all treated with black light absorption to form black light absorption surfaces. The black light absorption surface can absorb the laser to reduce the reflection, diffuse reflection and escape of the laser.

[0172] The outer cover 10 is provided with a maintenance door 140, and an electric lock 150 is provided at the edge of the maintenance door 140. The electric lock 150 has a locked state and an unlocked state. The electric lock 150 restricts the maintenance door 140 from opening in the locked state, and allows the maintenance door 140 to open in the unlocked state. An unlock button 160 and a lock button 170 are provided on the outside of the maintenance door 140. Both the unlock button 160 and the lock button 170 are connected to the electric lock 150 signal. The unlock button 160 is used to drive the electric lock 150 to switch from the locked state to the unlocked state, and the lock button 170 is used to drive the electric lock 150 to switch from the unlocked state to the locked state. The unlock button 160 signal is connected to the control circuit of the battery production system.

[0173] Based on the above structure, at the loading point: the laser welding equipment can block most of the laser from escaping outwards through the outer cover 10, and can block the laser inside the first protective cover 30 from escaping outwards through the first protective cover 30, and in particular, can block the laser from escaping outwards from the first feeding port 31 by closing the first feeding port 31 through the first door structure 40. It is also possible to reduce the risk of the laser being diffusely reflected through the small gap and escaping outwards from the first feeding port 31 during the period when the material carrier 60 moves to the first feeding port 31 and the first door structure 40 opens the first feeding port 31 based on the cooperation of the small gap between the frame structure 70 and the top wall of the first protective cover 30. Based on this, the laser welding equipment can block the laser from escaping in multiple dimensions and directions, and in particular can reduce the risk of the laser escaping from the loading point of the laser welding equipment, thereby improving the operational reliability and use reliability of the laser welding equipment.

[0174] Based on the above structure, at the discharge point: the laser welding equipment can close the second feed port 81 through the second door structure 100 to prevent the laser in the outer cover 10 from escaping from the second feed port 81 to the second protective cover 80; the laser in the second protective cover 80 can be prevented from escaping outwards; the third feed port 82 can be closed by the third door structure 110 to prevent the laser in the second protective cover 80 from escaping outwards from the third feed port 82. In addition, the situation of "the second door structure 100 opens the second feed port 81 and the third door structure 110 opens the third feed port 82" can be restricted. Based on this, the laser welding equipment can prevent the laser from escaping in multiple dimensions and directions, especially reduce the risk of the laser escaping quickly and directly from the second feed port 81 and the third feed port 82 that are opened at the same time, and especially reduce the risk of the laser escaping from the discharge point of the laser welding equipment, thereby improving the operation reliability and use reliability of the laser welding equipment.

[0175] Based on the above structure, the laser welding equipment can detect "whether the corresponding first door structure 40 is closed in place" through the first detection component 50, detect "whether the second door structure 100 is closed in place" through the second detection component 120, and detect "whether the third door structure 110 is closed in place" through the third detection component 130. In addition, the first detection component 50, the second detection component 120, and the third detection component 130 are all connected to the control circuit of the battery production system, that is, the detection results of "whether the first door structure 40 is closed in place", "whether the second door structure 100 is closed in place", and "whether the third door structure 110 is closed in place" will be sent to the control circuit of the battery production system. Based on this, according to the detection results, under normal circumstances, the control circuit of the battery production system can normally maintain the normal operation of the laser welding equipment, thereby taking into account the maintenance of the operating efficiency and reliability of the laser welding equipment. Conversely, under abnormal circumstances, the control circuit of the battery production system can cut off the power of the laser welding equipment to limit the laser operation of the laser welding equipment and hinder the generation and escape of the laser, thereby improving the reliability of the laser welding equipment under abnormal circumstances.

[0176] Based on the above structure, when the laser welding equipment is to be shut down for maintenance, a person can press the unlock button 160 from the outside of the maintenance door 140 to send an unlock signal to the electric lock 150 and the control circuit of the battery production system via the unlock button 160. Based on this, the unlock signal of the unlock button 160 can drive the electric lock 150 to switch from a locked state to an unlocked state, and the unlock signal of the unlock button 160 can also trigger the control circuit of the battery production system to cut off the power of the laser welding equipment to limit the laser operation of the laser welding equipment and shut down the laser welding equipment. In this way, it is convenient for maintenance personnel to enter and exit the outer cover 10 through the opened maintenance door 140 and perform post-maintenance on the mechanism inside the outer cover 10.

[0177] When the maintenance door 140 is reset from the open state to the closed state, a person can press the lock button 170 from the outside of the maintenance door 140 to send a lock signal to the electric lock 150 via the lock button 170, and drive the electric lock 150 to reset and switch from the unlocked state to the locked state. Based on this, the maintenance door 140 can be locked in the closed state via the electric lock 150 in the locked state, and the opening of the maintenance door 140 is restricted. This is conducive to maintaining the operation reliability and use reliability of the laser welding equipment during normal operation.

[0178] Among them, the material loading can be automatic loading to avoid manual loading. The material discharging can be automatic discharging to avoid manual discharging. The opening and closing of the first door structure 40, the opening and closing of the second door structure 100, and the opening and closing of the third door structure 110 can be automatically controlled by the control circuit to avoid manual control. Such a setting can greatly reduce the risk of laser damage to humans and improve work efficiency based on automation.

[0179] See also Figure 1 Some embodiments of the present application provide a battery production system, including the laser welding equipment provided in the embodiments of the present application.

[0180] By adopting the above solution, the battery production system can perform laser welding operations (such as welding of battery casings) by applying the laser welding equipment provided in the embodiments of the present application, and the reliability of the battery production system can be improved.

[0181] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A laser welding device, characterized in that: include: Outer cover; A first feeding mechanism; A first protective cover is connected to the peripheral side of the outer cover; a portion of the first feeding mechanism extends into the outer cover and another portion extends into the first protective cover; the first protective cover is provided with a first feeding port corresponding to the first feeding mechanism; a first door structure, arranged corresponding to the first feeding port, and used for opening and closing the first feeding port; The first detection component is arranged corresponding to the first door structure. The first detection component includes two first detectors. At least one of the two first detectors is installed on the first door structure. The two first detectors detect each other to determine the opening and closing state of the first door structure.

2. The laser welding equipment according to claim 1, characterized in that: The first door structure includes two door bodies that open and close together and correspond to the first feeding port, and the two first detectors of the first detection assembly are respectively installed on the two door bodies corresponding to the first door structure.

3. The laser welding equipment according to claim 1, characterized in that: The first feeding mechanism is provided with a material carrying fixture, and the surrounding ring of the material carrying fixture is provided with a frame structure; In the gravity direction, the first feeding port is arranged on the top wall of the first protective cover, and when the loading fixture is facing the first feeding port, the frame structure is arranged on the outer periphery of the first feeding port below the first feeding port.

4. The laser welding equipment according to claim 3, characterized in that: When the material loading fixture is facing the first material feeding port, the distance between the top surface of the frame structure and the top wall of the first protective cover is 0-2 mm.

5. The laser welding equipment according to claim 1, characterized in that: There are two first feeding mechanisms, and the two first feeding mechanisms are arranged side by side.

6. The laser welding equipment according to any one of claims 1 to 5, characterized in that: The laser welding equipment comprises: a second protective cover, wherein a portion of the second protective cover extends into the outer cover and another portion extends out of the outer cover, a second feeding port is provided on the portion of the second protective cover extending into the outer cover, and a third feeding port is provided on the portion of the second protective cover extending out of the outer cover; A second feeding mechanism is disposed in the second protective cover, and a feeding path of the second feeding mechanism passes through the second feeding port and the third feeding port; one of the second feeding mechanism and the first feeding mechanism is used for loading, and the other of the second feeding mechanism is used for discharging; A second door structure, arranged corresponding to the second feeding port, for opening and closing the second feeding port; The third door structure is arranged corresponding to the third feeding port and is used for opening and closing the third feeding port.

7. The laser welding equipment according to claim 6, characterized in that: The second door structure opens and closes the second feeding port when the third door structure closes the third feeding port, and the third door structure opens and closes the third feeding port when the second door structure closes the second feeding port.

8. The laser welding equipment according to claim 6, characterized in that: The laser welding equipment includes a second detection component corresponding to the second door structure, the second detection component includes two second detectors, at least one of the two second detectors is installed on the second door structure, and the two second detectors are mutually aligned for detection to determine the opening and closing state of the second door structure; And / or, the laser welding equipment includes a third detection component arranged corresponding to the third door structure, the third detection component includes two third detectors, at least one of the two third detectors is installed on the third door structure, and the two third detectors are aligned with each other for detection to determine the opening and closing state of the third door structure.

9. The laser welding equipment according to claim 6, characterized in that: The inner side surface of at least one of the outer cover, the first protective cover, the first door structure, the second protective cover, the second door structure, and the third door structure is a black light-absorbing surface.

10. A battery production system, characterized in that: It comprises the laser welding equipment as described in any one of claims 1-9.

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