Correcting device and laser welding equipment

Abstract

The utility model discloses a correcting device and laser welding equipment, and the correcting device comprises a clamping jig and a correcting module, the clamping jig comprises a clamping module and an elastic piece, the clamping module is used for clamping the battery, the elastic piece is used for bearing the battery, and the elastic piece is completely attached to the bottom side surface of the battery; the correction module is provided with a flat surface, and the flat surface can be vertically pressed to the top side surface of the battery so as to be matched with the elastic piece to correct the flatness of the top side surface of the battery. According to the technical scheme, the flat surface of the correction module presses the top side surface of the battery and is matched with the elastic deformation of the elastic piece, so that the planeness of the top side surface of the battery is the same as that of the flat surface, the planeness precision of the top side surface of the battery is improved, and meanwhile, the battery is fixed by utilizing the clamping module; and the flatness of the top side surface of the battery can be kept unchanged in the moving and welding processes.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a correction device and laser welding equipment. Background Art

[0002] As one of the most important processes in the production of single cells, the top surface welding of the battery has a direct impact on the yield and quality of the entire production line and the performance of the battery cell. However, in the prior art, when welding the top surface of the battery, the battery to be welded is simply placed on the corresponding fixture for simple fixation and then directly sent for welding. This results in a low flatness accuracy of the top surface of the battery, which in turn affects the yield and quality of the top surface welding of the battery. Utility Model Content

[0003] The main purpose of the utility model is to provide a correction device, which aims to solve the problem that in the prior art, when welding the top side surface of the battery, the battery to be welded is simply placed on the corresponding clamping fixture by manual means for simple fixation, and then sent directly to welding, resulting in low flatness accuracy of the top side surface of the battery, affecting the yield and quality of the welding of the top side surface of the battery.

[0004] To achieve the above-mentioned purpose, the present invention provides a calibration device, which comprises a clamping fixture and a calibration module; wherein the clamping fixture comprises a clamping module and an elastic member, the clamping module is used to clamp the battery, the elastic member is used to carry the battery, and the elastic member is completely in contact with the bottom surface of the battery;

[0005] The correction module has a flat surface, and the flat surface can be vertically pressed toward the top side surface of the battery to cooperate with the elastic member to correct the flatness of the top side surface of the battery.

[0006] In some embodiments of the utility model, the clamping module includes two fixed parts, two movable parts and a first driving part, one of the fixed parts is located on one side of the battery in the length direction, and the other fixed part is located on one side of the battery in the width direction, and the two movable parts are respectively arranged opposite to the two fixed parts, so that the two fixed parts and the two movable parts surround a placement groove, and the battery is located in the placement groove;

[0007] The first driving member is drivingly connected to the two movable members, and the first driving member is used to drive the two movable members to move in a direction close to or away from the battery, so that the two movable members and the two fixing members clamp the battery together.

[0008] In some embodiments of the present invention, the clamping fixture also includes a sliding module, and the elastic member is installed on the surface of the sliding module facing the battery, so that when the two movable members move close to the battery, the elastic member moves synchronously with the battery through the sliding module.

[0009] In some embodiments of the present invention, the clamping fixture further includes an ejection module, and the ejection module is used to drive the elastic member to move in a direction close to the battery so that the battery partially extends out of the placement groove.

[0010] In some embodiments of the present invention, the correction module includes a pressing block and a second driving member, the pressing block is provided with the flat surface on the surface facing the battery, and the second driving member is drivingly connected to the pressing block to drive the pressing block to move toward or away from the battery.

[0011] The utility model also proposes a laser welding device, which includes a laser head, a transportation device and the above-mentioned correction device. The laser welding device has a welding station and a correction station. The laser head is located at the welding station for laser welding the battery. The correction module of the correction device is located at the correction station. The transportation device is driven and connected to the clamping fixture of the correction device to realize the position switching of the clamping fixture between the welding station and the correction station.

[0012] In some embodiments of the utility model, the laser welding equipment also includes a dust suction device, which is located at the welding station and between the laser head and the clamping fixture, and is used to suck dust generated by the battery laser welding.

[0013] In some embodiments of the present invention, the dust suction device includes a third driving member and a suction module, and the third driving member is used to drive the suction module to move in a direction close to or away from the battery.

[0014] In some embodiments of the utility model, the suction module includes a movable plate and a suction piece, the movable plate is provided with an avoidance channel for the laser emitted by the laser head to pass through, the peripheral wall of the avoidance channel is provided with a suction groove, the suction groove is inclined from bottom to top in a direction away from the avoidance channel, the suction groove extends along the circumference of the avoidance channel so that the suction groove is arranged in a ring shape, the bottom of the suction groove is penetrated by a suction channel, and the suction piece is connected to the suction channel.

[0015] In some embodiments of the utility model, the peripheral wall of the avoidance channel is further provided with a blowing groove, the blowing groove is located on a side of the suction groove close to the battery, the blowing groove is inclined from bottom to top in a direction away from the peripheral wall of the avoidance channel, the blowing groove extends along the circumference of the avoidance channel so that the blowing groove is arranged in an annular shape, and the bottom of the blowing groove is penetrated by a blowing channel;

[0016] The suction module further includes a blowing member, which is communicated with the blowing channel and is used for blowing air to the top side surface of the battery through the blowing channel and the blowing groove.

[0017] The technical solution of the utility model, its correction device includes a clamping fixture and a correction module; wherein the clamping fixture includes a clamping module and an elastic member, the clamping module is used to clamp the battery, the elastic member is used to carry the battery, and the elastic member is completely in contact with the bottom surface of the battery; the correction module has a flat surface, and the flat surface can be vertically pressed against the top surface of the battery to cooperate with the elastic member to correct the flatness of the top surface of the battery. With such an arrangement, when the battery to be welded is carried on the elastic part, the flat surface of the correction module can be pressed vertically against the top side surface of the battery, so that the battery is pressed downward under the force of the correction module, and then the elastic part on the bottom side of the battery is squeezed by the bottom side surface of the battery and deformed. At this time, the battery will be squeezed toward the correction module under the elastic force of the elastic part, so that the top side surface of the battery is completely fitted with the flat surface of the correction module, and then the flatness of the top side surface of the battery is made the same as the flatness of the flat surface, thereby improving the accuracy of the flatness of the top side surface of the battery. Finally, the battery is clamped and fixed by the clamping module, so that the flatness of the top side surface of the battery can remain unchanged during the movement and welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a schematic structural diagram of an embodiment of the calibration device of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the partial structure of the middle clamping fixture;

[0021] Figure 3 for Figure 2Exploded view of the center fixture;

[0022] Figure 4 This is a schematic structural diagram of an embodiment of the laser welding equipment of the utility model;

[0023] Figure 5 for Figure 4 A schematic diagram of the partial structure of the suction module;

[0024] Figure 6 for Figure 5 sectional view of .

[0025] Description of Figure Numbers:

[0026] 1000, laser welding equipment; 100, correction device; 110, clamping fixture; 111, clamping module; 111a, fixing member; 111b, movable member; 111c, first driving member; 111d, placement groove; 112, elastic member; 113, sliding module; 114, ejection module; 120, correction module; 121, flat surface; 122, pressing block; 123, second driving member; 20 0. Laser head; 300. Transport device; 400. Welding station; 500. Correction station; 600. Dust suction device; 610. Third driving member; 620. Suction module; 621. Movable plate; 621a. Avoidance channel; 621b. Suction groove; 621c. Suction channel; 621d. Blowing groove; 621e. Blowing channel; 622. Suction member; 623. Blowing member; 2000. Battery.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] Please also read Figures 1 to 3 The utility model proposes a correction device 100, which includes a clamping fixture 110 and a correction module 120. The clamping fixture 110 includes a clamping module 111 and an elastic member 112. The clamping module 111 is used to clamp the battery 2000, and the elastic member 112 is used to carry the battery 2000. The elastic member 112 is completely in contact with the bottom surface of the battery 2000; the correction module 120 has a flat surface 121, and the flat surface 121 can be vertically pressed against the top surface of the battery 2000 to cooperate with the elastic member 112 to correct the flatness of the top surface of the battery 2000.

[0032] The top plane of the battery 2000 is the surface of the battery 2000 facing the laser head 200, which can be understood as the processing plane of the battery 2000. The bottom plane of the battery 2000 is the surface of the battery 2000 facing away from the laser head 200. The flatness accuracy of the flat surface 121 is high, and the hardness of the flat surface 121 is high and is not easily deformed by external forces. Therefore, when the top surface of the battery 2000 is pressed, the flatness of the flat surface 121 remains unchanged, and the battery 2000 partially moves downward, so that the elastic member 112 produces elastic deformation to match the change in the flatness of the top surface of the battery 2000, so that the flatness of the top surface of the battery 2000 is the same as that of the flat surface 121.

[0033] The elastic member 112 may be composed of many kinds of compositions. For example, the elastic member 112 may be an elongated elastic body. When the flat surface 121 is pressed against the top surface of the battery 2000, various parts of the elastic body will produce corresponding elastic deformation, thereby cooperating with the flat surface 121 to change the flatness of the top surface of the battery 2000. For another example, the elastic member 112 may be composed of a plurality of springs, which are arranged at intervals along the circumference of the battery 2000. When the flat surface 121 is pressed against the top surface of the battery 2000, the corresponding springs will produce elastic deformation, thereby cooperating with the flat surface 121 to change the flatness of the top surface of the battery 2000. These are not listed one by one here.

[0034] The elastic member 112 is completely in contact with the bottom surface of the battery 2000. It can be understood that the coverage area of ​​the elastic member 112 is slightly larger than or equal to the bottom surface of the battery 2000, so that when the bottom surface of the battery 2000 is tilted, the elastic member 112 can produce elastic deformation to keep completely in contact with the bottom surface of the battery 2000.

[0035] The technical solution of the utility model, its correction device 100 includes a clamping fixture 110 and a correction module 120; wherein, the clamping fixture 110 includes a clamping module 111 and an elastic member 112, the clamping module 111 is used to clamp the battery 2000, the elastic member 112 is used to support the battery 2000, and the elastic member 112 is completely in contact with the bottom surface of the battery 2000; the correction module 120 has a flat surface 121, and the flat surface 121 can be pressed against the top surface of the battery 2000 to cooperate with the elastic member 112 to correct the flatness of the top surface of the battery 2000. With such arrangement, when the battery 2000 to be welded is carried on the elastic member 112, the flat surface 121 of the correction module 120 is vertically pressed against the top surface of the battery 2000, so that the battery 2000 is pressed downward under the force of the correction module 120, and the elastic member 112 on the bottom side of the battery 2000 is squeezed and deformed by the bottom surface of the battery 2000. At this time, the battery 2000 is squeezed and deformed under the elastic force of the elastic member 112. The correction module 120 is moved toward the correction module 120 so that the top side surface of the battery 2000 is completely fitted with the flat surface 121 of the correction module 120, thereby making the flatness of the top side surface of the battery 2000 the same as the flatness of the flat surface 121, thereby improving the accuracy of the flatness of the top side surface of the battery 2000. Finally, the battery 2000 is clamped and fixed by the clamping module 111, so that the flatness of the top side surface of the battery 2000 remains unchanged during the movement and welding process.

[0036] Please also read Figures 1 to 3 In some embodiments of the utility model, the clamping module 111 includes two fixed parts 111a, two movable parts 111b and a first driving part 111c, one fixed part 111a is located on one side of the battery 2000 in the length direction, and the other fixed part 111a is located on one side of the battery 2000 in the width direction. The two movable parts 111b are respectively arranged opposite to the two fixed parts 111a, so that the two fixed parts 111a and the two movable parts 111b are surrounded to form a placement groove 111d, and the battery 2000 is located in the placement groove 111d; the first driving part 111c is drivingly connected to the two movable parts 111b, and the first driving part 111c is used to drive the two movable parts 111b to move in a direction close to or away from the battery 2000, so that the two movable parts 111b and the two fixed parts 111a jointly clamp the battery 2000.

[0037] With such an arrangement, the battery 2000 can be clamped and fixed on both sides of the length and width directions by the two movable parts 111b and the two fixed parts 111a, thereby improving the stability of the clamping module 111 on the battery 2000, and further ensuring that the flatness of the top side surface of the battery 2000 will not change during the movement and welding process.

[0038] The arrangement of the two fixed parts 111a and the two movable parts 111b can be understood as being staggered along the circumference of the battery 2000, so that the fixed parts 111a, the movable parts 111b, the fixed parts 111a and the movable parts 111b are arranged in sequence along the circumference of the battery 2000. The two movable parts 111b will move the battery 2000 in the length direction and the width direction during the process of clamping the battery 2000, so that after the battery 2000 is close to the two fixed parts 111a, the movable parts 111b and the relative fixed parts 111a clamp the battery 2000. The coverage area of ​​the flat surface 121 is larger than the top side surface of the battery 2000, so that when the battery 2000 is pushed by the movable part 111b, the flat surface 121 always abuts against the top side surface of the battery 2000.

[0039] There are many types of the first driving member 111c. The first driving member 111c may be an air pump, a motor, or a hydraulic press, which is not specifically limited here.

[0040] Considering that after the flat surface 121 is pressed against the top surface of the battery 2000, the elastic member 112 generates elastic deformation. If the battery 2000 is moved by the movable member 111b and the elastic member 112 does not move, it is easy to cause the battery 2000 to tilt as a whole, affecting the flatness of the top surface of the battery 2000. In view of this, please refer to Figures 1 to 3 The clamping fixture 110 also includes a sliding module 113, and the elastic member 112 is installed on the surface of the sliding module 113 facing the battery 2000, so that when the two movable members 111b move close to the battery 2000, the elastic member 112 moves synchronously with the battery 2000 through the sliding module 113.

[0041] In this way, by installing the elastic member 112 on the sliding module 113, when the battery 2000 is pushed by the movable member 111b, the sliding module 113 will be affected by the friction between the bottom surface of the battery 2000 and the elastic member 112 to drive the elastic member 112 and the battery 2000 to move synchronously, thereby avoiding the battery 2000 from tilting, and further ensuring that the flatness of the top surface of the battery 2000 is not affected when the movable member 111b drives the battery 2000 to move.

[0042] There are many types of the sliding module 113. For example, the clamping fixture 110 also includes a first track extending in the width direction. The sliding module 113 includes a movable plate 621 and a slider. The elastic member 112 is installed on the movable plate 621. The movable plate 621 is provided with a second track extending in the length direction at one end facing away from the elastic member 112. The surface of the slider facing the bottom plate is provided with a first groove. The two groove walls of the first groove in the width direction are penetrated. The first groove is slidably matched with the first track. The surface of the slider facing the movable plate 621 is provided with a second groove. The two groove walls of the second groove in the length direction are penetrated. The second groove is slidably matched with the second track.

[0043] For another example, the clamping fixture 110 also includes a first track extending along the width direction and a second track extending along the length direction, the sliding module 113 includes a movable plate 621 and at least two sliders, the elastic member 112 is installed on the movable plate 621, all the sliders are installed on the movable plate 621, at least one slider is provided with a first guide groove on the surface away from the movable plate 621, the first guide groove is penetrated by two groove walls in the length direction of the battery 2000, and the first guide groove is provided to slide with the first track, and another slider is provided with a second guide groove on the surface away from the battery 2000, the second guide groove is penetrated by two groove walls in the width direction of the battery 2000, and the second guide groove is provided to slide with the second track.

[0044] It should be noted that the first track can move along the width direction of the battery 2000 with the movable plate 621, or the second track can move along the length direction of the battery 2000 with the movable plate 621. There are various settings of the first track or the second track. For example, a telescopic part that can be extended and retracted along the width direction of the battery 2000 is provided on the protective shell of the wrapping and clamping fixture 110, and the first track is provided on the telescopic part, and the second track is fixed. For another example, a telescopic part that can be extended and retracted along the length direction of the battery 2000 is provided on the protective shell of the wrapping and clamping fixture 110, and the second track is provided on the telescopic part, and the first track is fixed. They are not listed one by one here.

[0045] The first track can be connected to a slider or multiple sliders, which is not specifically limited here. The second track can be connected to a slider or multiple sliders, which is not specifically limited here.

[0046] Please also read Figures 1 to 3In some embodiments of the present invention, the clamping fixture 110 further includes an ejection module 114, which is used to drive the elastic member 112 to move toward the direction close to the battery 2000, so that the battery 2000 partially extends out of the placement groove 111d. In this way, after the battery 2000 completes all processes, the ejection module 114 can eject the battery 2000 from the placement groove 111d, so that the staff can take out the battery 2000 by grabbing the part of the battery 2000 extending out of the placement groove 111d, thereby facilitating the staff's operation.

[0047] See also Figure 1 In some embodiments of the present invention, the correction module 120 includes a pressing block 122 and a second driving member 123. The pressing block 122 is provided with a flat surface 121 on the surface facing the battery 2000. The second driving member 123 is drivingly connected to the pressing block 122 to drive the pressing block 122 to move in a direction close to or away from the battery 2000. In this configuration, the pressing block 122 is driven by the second driving member 123 to move in a direction close to the battery 2000, and the flat surface 121 of the pressing block 122 is pressed against the top side surface of the battery 2000, thereby adjusting the flatness of the top side surface of the battery 2000. After the flatness of the top side surface of the battery 2000 is adjusted, the pressing block 122 will move in a direction away from the battery 2000 under the drive of the second driving member 123, thereby preventing the clamping fixture 110 from interfering with the pressing block 122 when being transported to the next process, resulting in damage to the correction module 120 and the clamping fixture 110. There are many types of the second driving member 123. The second driving member 123 may be an air pump, a motor, or a hydraulic press, which is not specifically limited here.

[0048] Please also read Figures 1 to 3 In some embodiments of the utility model, when the clamping module 111 cancels the limit on the battery 2000, the elastic member 112 can push the battery 2000 out so that part of the battery 2000 is higher than the clamping module 111. Such a configuration makes it easier for the staff to unload the battery 2000, thereby improving the working efficiency of the laser welding equipment 1000.

[0049] See also Figure 4The utility model also proposes a laser welding device 1000, which includes a laser head 200, a transport device 300 and a correction device 100. The specific structure of the correction device 100 refers to the above embodiment. Since the laser welding device 1000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the laser welding device 1000 has a welding station 400 and a correction station 500. The laser head 200 is located at the welding station 400 for laser welding the battery 2000. The correction module 120 of the correction device 100 is located at the correction station 500. The transport device 300 is connected to the clamping fixture 110 of the correction device 100 to realize the position switching of the clamping fixture 110 between the welding station 400 and the correction station 500.

[0050] In this way, the correction device 100 improves the flatness accuracy of the top side surface of the battery 2000, thereby improving the accuracy of the laser welding equipment 1000 in welding the battery 2000, and further improving the welding quality of the laser welding equipment 1000. At the same time, after the correction module 120 corrects the battery 2000 at the correction station 500, the clamping module 111 first fixes the battery 2000, and then the transportation module transports the clamping fixture 110 to the welding station 400, and the laser head 200 welds the top side surface of the battery 2000 on the welding station 400, thereby improving the automation degree of the laser welding equipment 1000, and further improving the production efficiency of the laser welding equipment 1000.

[0051] Please also read Figures 4 to 6 In some embodiments of the present invention, the laser welding equipment 1000 further includes a dust suction device 600, which is located at the welding station 400 and between the laser head 200 and the clamping fixture 110. The dust suction device 600 is used to suck dust generated by laser welding of the battery 2000. In this way, the dust suction device 600 can be used to remove dust generated during laser welding, thereby preventing dust from affecting laser welding, thereby improving the welding quality of the laser welding equipment 1000.

[0052] Please also refer to Figures 4 to 6The dust collecting device 600 includes a third driving member 610 and a suction module 620, and the third driving member 610 is used to drive the suction module 620 to move in a direction close to or away from the battery 2000. In this way, when the transport module transports the fixture 110 from the correction station 500 to the welding station 400, the suction module 620 is spaced from the fixture. After the fixture is transported to the welding station 400, the suction module 620 is driven by the third driving member 610 to abut against the fixture 110, thereby avoiding interference between the suction module 620 and the fixture 110, resulting in damage to the suction module 620 and the fixture 110.

[0053] There are many types of the third driving member 610. The third driving member 610 may be an air pump, a motor, or a hydraulic press, which is not specifically limited here.

[0054] For details, please refer to Figures 4 to 6 The suction module 620 includes a movable plate 621 and a suction member 622. The movable plate 621 is provided with an escape channel 621a for the laser emitted by the laser head 200 to pass through. The peripheral wall of the escape channel 621a is provided with a suction groove 621b. The suction groove 621b is inclined from bottom to top in a direction away from the escape channel 621a. The suction groove 621b extends along the circumference of the escape channel 621a so that the suction groove 621b is annularly arranged. The bottom of the suction groove 621b is penetrated by a suction channel 621c. The suction member 622 is connected to the suction channel 621c. In this way, the suction force of the suction member 622 can better act on the top side surface of the battery 2000 through the inclined and annular escape groove, so that the dust generated by laser welding on the top side surface of the battery 2000 can be more fully sucked, thereby improving the welding quality of the laser welding device 1000.

[0055] The bottom of the suction groove 621b may be provided with a plurality of suction channels 621c, which are arranged at intervals along the circumference of the battery 2000, and the number of the suction pieces 622 corresponds to the number of the suction channels 621c, and the suction pieces 622 are connected to the suction channels 621c in a one-to-one manner.

[0056] For further information, please also refer to Figures 4 to 6The peripheral wall of the avoidance channel 621a is also recessed with a blowing groove 621d, which is located on the side of the suction groove 621b close to the battery 2000, and the blowing groove 621d is inclined from bottom to top in the direction away from the peripheral wall of the avoidance channel 621a, and the blowing groove 621d extends along the circumference of the avoidance channel 621a so that the blowing groove 621d is arranged in a ring shape, and a blowing channel 621e is penetrated through the bottom of the blowing groove 621d; the suction module 620 also includes a blowing piece 623, which is connected to the blowing channel 621e, and the blowing piece 623 is used to blow air to the top side surface of the battery 2000 through the blowing channel 621e and the blowing groove 621d.

[0057] In this way, the blowing piece 623 blows air to the top side surface of the battery 2000 through the blowing channel 621e and the blowing groove 621d, thereby blowing up the dust attached to the top side surface of the battery 2000, making it convenient for the suction piece 622 to suck the dust through the suction groove 621b and the suction channel 621c. At the same time, the inclined and annular blowing groove 621d allows the gas blown by the blowing piece 623 to better act on the top side surface of the battery 2000, thereby more comprehensively blowing up the dust on the top side surface of the battery 2000, thereby improving the welding quality of the laser welding equipment 1000.

[0058] There are many types of gases blown out by the blowing member 623. The gas blown out by the blowing member 623 may be nitrogen, helium, or other inert gases, which are not specifically limited here.

[0059] The bottom of the blowing groove 621d may be provided with a plurality of blowing channels 621e, which are arranged at intervals along the circumference of the battery 2000, and the number of the blowing members 623 corresponds to the number of the blowing channels 621e, and the blowing members 623 are connected to the blowing channels 621e in a one-to-one manner.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A calibration device, characterized in that: The calibration device comprises a clamping fixture and a calibration module; wherein the clamping fixture comprises a clamping module and an elastic member, the clamping module is used to clamp the battery, the elastic member is used to carry the battery, and the elastic member is completely in contact with the bottom surface of the battery; The correction module has a flat surface, and the flat surface can be vertically pressed toward the top side surface of the battery to cooperate with the elastic member to correct the flatness of the top side surface of the battery.

2. The calibration device according to claim 1, characterized in that The clamping module includes two fixed parts, two movable parts and a first driving part, one of the fixed parts is located on one side of the battery in the length direction, the other fixed part is located on one side of the battery in the width direction, the two movable parts are respectively arranged opposite to the two fixed parts, so that the two fixed parts and the two movable parts surround a placement groove, and the battery is located in the placement groove; The first driving member is drivingly connected to the two movable members, and the first driving member is used to drive the two movable members to move in a direction close to or away from the battery, so that the two movable members and the two fixing members clamp the battery together.

3. The calibration device according to claim 2, characterized in that: The clamping fixture further includes a sliding module, and the elastic member is installed on a surface of the sliding module facing the battery, so that when the two movable members move close to the battery, the elastic member moves synchronously with the battery through the sliding module.

4. The calibration device according to claim 2, characterized in that: The clamping fixture further includes an ejection module, which is used to drive the elastic member to move toward a direction close to the battery so that the battery is partially extended out of the placement groove.

5. The calibration device according to claim 1, characterized in that: The correction module includes a pressing block and a second driving member. The surface of the pressing block facing the battery is provided with the flat surface. The second driving member is drivingly connected to the pressing block to drive the pressing block to move toward or away from the battery.

6. A laser welding device, characterized in that: The laser welding equipment includes a laser head, a transportation device and a correction device as described in any one of claims 1 to 5, the laser welding equipment has a welding station and a correction station, the laser head is located at the welding station for laser welding the battery, the correction module of the correction device is located at the correction station, and the transportation device is driven and connected to the clamping fixture of the correction device to realize the position switching of the clamping fixture between the welding station and the correction station.

7. The laser welding equipment according to claim 6, characterized in that: The laser welding equipment also includes a dust suction device, which is located at the welding station and between the laser head and the clamping fixture. The dust suction device is used to suck dust generated by the battery laser welding.

8. The laser welding equipment according to claim 7, characterized in that: The dust suction device comprises a third driving member and a suction module, wherein the third driving member is used to drive the suction module to move in a direction approaching or away from the battery.

9. The laser welding equipment according to claim 8, characterized in that: The suction module includes a movable plate and a suction piece, the movable plate is provided with an escape channel for the laser emitted by the laser head to pass through, a suction groove is recessed on the peripheral wall of the escape channel, the suction groove is inclined from bottom to top in a direction away from the escape channel, the suction groove extends along the circumference of the escape channel so that the suction groove is arranged in a ring shape, the bottom of the suction groove is penetrated by a suction channel, and the suction piece is connected to the suction channel.

10. The laser welding equipment according to claim 9, characterized in that: The peripheral wall of the avoidance channel is further provided with an air blowing groove, the air blowing groove is located on a side of the suction groove close to the battery, the air blowing groove is inclined from bottom to top in a direction away from the peripheral wall of the avoidance channel, the air blowing groove extends along the circumference of the avoidance channel so that the air blowing groove is arranged in an annular shape, and the bottom of the air blowing groove is penetrated by an air blowing channel; The suction module further includes a blowing member, which is communicated with the blowing channel and is used for blowing air to the top side surface of the battery through the blowing channel and the blowing groove.

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