Battery pack shell automated laser welding equipment based on intelligent control

Abstract

The present invention relates to the technical field of battery pack shell welding, and specifically to an automated laser welding device for battery pack shells based on intelligent control, which is used to solve the technical problem that the laser welding process of the battery pack shell cannot be accurately analyzed, controlled and operated, and the weld hole area, weld roughness and weld depth-to-width ratio and the ratio between the three cannot be intelligently adjusted according to the specific conditions in the laser welding process of the battery pack shell; the present invention includes a base, and a control panel, a positioning rotator and a lifting cylinder are respectively provided on one side of the top of the base. The present invention cooperates with each module and an actuator to accurately analyze, control and operate the laser welding process of the battery pack shell, accurately adjust the variables related to the laser welding process of the battery pack shell, and adjust the related variables to the best through regulatory feedback, so as to ensure that the battery pack shell after laser welding meets the production quality requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack shell welding, and in particular to battery pack shell automated laser welding equipment based on intelligent control. Background Art

[0002] The battery pack shell is an important component for accommodating and protecting the battery pack. The battery pack shell plays a vital role in ensuring the safety and stable operation of the battery and the overall performance of the vehicle. Battery pack shell laser welding is an advanced connection technology and plays an important role in battery pack manufacturing. The principle of laser welding is to use a high-energy-density laser beam to focus on the connection part of the battery pack shell, so that it melts and fuses together instantly to form a strong weld.

[0003] However, when laser welding the battery pack shell, traditional battery pack shell laser welding equipment cannot accurately analyze and control the battery pack shell laser welding process. It is unable to intelligently adjust the weld hole area, weld roughness, weld depth-to-width ratio and the ratio between the three according to the specific conditions of the battery pack shell laser welding process to achieve efficient and excellent laser welding of the battery pack shell. At the same time, it is also difficult to perform corresponding stable limiting on battery pack shells of different specifications. The battery pack shell is prone to move during laser welding, resulting in inaccurate welding position during laser welding, thereby reducing the welding quality of laser welding of the battery pack shell.

[0004] To this end, we propose an automated laser welding equipment for battery pack shells based on intelligent control. Summary of the invention

[0005] The purpose of the present invention is to provide an automated laser welding device for a battery pack shell based on intelligent control to solve the technical defects proposed by the background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions: an automatic laser welding device for battery pack shell based on intelligent control, comprising a base, a control panel, a positioning rotator and a lifting cylinder are respectively arranged on one side of the top of the base, four columns distributed along the circumference of the positioning rotator are arranged on the top of the base, a placement ring is fixedly connected to the top of the column, a rotating column is arranged on the output end of the positioning rotator, four connecting rods are arranged at equal angles on the outer wall of the rotating column, a movable motor slidably connected to the outer wall of the placement ring is fixedly connected to the end of the connecting rod away from the rotating column, and a placement plate is arranged on the output end of the movable motor;

[0007] A positioning structure is provided on the placement plate, the upper limit of which is connected to the battery pack shell to be processed, a support plate is provided on the output end of the lifting cylinder, and a mounting plate and a six-axis manipulator automatic laser welding machine are respectively provided on the top of the support plate.

[0008] As a further improvement of the present invention: a second electric push rod, a movable rail and a first electric push rod are respectively provided on the other side of the top of the base, the output end of the first electric push rod is connected to the lifting cylinder, a sliding block is slidably connected to the movable rail, the output end of the second electric push rod is connected to the sliding block, a pushing cylinder is fixedly installed on the top of the sliding block, and a moving box is provided on the output end of the pushing cylinder.

[0009] As a further improvement scheme of the present invention: the positioning structure includes a placement frame fixedly connected to the placement plate, an active telescopic rod is fixedly installed in the placement frame, a movable frame is fixedly installed at one end of the active telescopic rod, the movable frame is hinged with an articulated frame, the articulated frame is hinged with a positioning frame, a positioning plate is fixedly installed at the end of the positioning frame, and a distance adjustment component is connected to the positioning frame.

[0010] As a further improvement of the present invention: the distance adjustment component includes a rotating motor fixedly connected to the placement frame, the output shaft of the rotating motor is fixedly installed with a movable groove frame, the movable groove frame is provided with multiple groups of movable grooves, the movable grooves are slidably connected with movable rods, the movable rods are fixedly connected with movable seats, the movable seats are hinged to the positioning frame, and the movable seat is slidably connected with a connecting bracket fixedly connected to the placement frame.

[0011] As a further improvement of the present invention: a servo motor is provided on the inner wall of the top end of the moving box away from the rotating column, a placing plate is provided on the inner wall of the bottom end of the moving box, two second rotating brackets are provided at intervals on the side of the top of the placing plate away from the rotating column, two first rotating brackets are provided at intervals on the end of the top of the placing plate close to the rotating column, a rotating shaft is provided on the output end of the servo motor, which passes through the second rotating bracket and extends to the outside thereof, and a rotating connecting piece is provided on the end of the rotating shaft close to the rotating column.

[0012] As a further improvement scheme of the present invention: a fixed shaft is provided at one end of the rotating connecting piece close to the rotating column, a T-shaped connecting cylinder is sleeved on the fixed shaft, a movable ball rod is provided at the bottom of the T-shaped connecting cylinder, the movable ball rod is hinged with a movable connecting piece, and the movable connecting piece is movably connected to a bearing connecting seat at one end close to the rotating column, and the bearing connecting seat is connected to a movable connecting rod that penetrates the first rotating bracket and extends to the outside thereof at one end close to the rotating column, and the movable connecting rod is connected to a movable connecting rod that penetrates the inner wall of the moving box and extends to the outside thereof at one end away from the servo motor through a connecting block, and the movable connecting rod is fixedly connected to a grinding motor at one end away from the moving box, and a grinding wheel is provided on the output end of the grinding motor.

[0013] As a further improvement of the present invention: the control panel is internally provided with a processor, a data collection module, a data analysis module and an execution module;

[0014] The data collection module is used to collect the welding surface condition information on the battery pack shell to be processed during the laser welding process of the battery pack shell, and transmit it to the data analysis module, and the welding surface condition information is composed of the weld hole area factor, the weld roughness factor and the weld depth-to-width ratio factor;

[0015] The data analysis module performs control and analysis operations on the laser welding processing of the battery pack shell based on the above information received, and calibrates the weld hole area factor, weld roughness factor and weld depth-to-width ratio factor as M, C and S respectively. The welding surface condition level G on the battery pack shell to be processed during the laser welding of the battery pack shell is calculated by the formula, and the welding surface condition level G is compared with the preset welding surface condition level g to obtain process excellent signal, process general signal and process poor signal. The various process signals obtained are transmitted to the execution module via the processor, and the execution module performs corresponding operation processing according to the various process signals obtained.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention collects welding surface working condition information during the laser welding process of the battery pack shell, transmits the collected information to a data analysis module, obtains process excellent signals, process general signals and process poor signals through processing by the data analysis module, transmits the obtained signals to an execution module through a processor, and performs analysis and control operations on the laser welding process of the battery pack shell through the execution module. The weld hole area, weld roughness and weld depth-to-width ratio as well as the ratio between the three can be intelligently adjusted according to the specific conditions during the laser welding process of the battery pack shell, and the battery pack shell can be efficiently and excellently laser welded to ensure that the battery pack shell after laser welding meets the production quality requirements;

[0018] The present invention also adjusts the position of the positioning plate to firmly limit the battery pack shell through the coordinated use of an active telescopic rod, a movable frame, an articulated frame, a positioning frame, a positioning plate, a rotating motor, a movable slot frame, a movable rod and a movable seat. The above-mentioned processing can adaptably and firmly limit the battery pack shells of different specifications, thereby avoiding the movement of the battery pack shells during laser welding and avoiding inaccurate welding positions during laser welding, thereby improving the welding quality of laser welding of the battery pack shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0021] Figure 2 It is a front view cutaway structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the supporting plate, the mounting plate and the six-axis manipulator automatic laser welding machine in the present invention;

[0023] Figure 4 A schematic diagram of a three-dimensional structure of a positioning structure in the present invention from one viewing angle;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of the positioning structure of the present invention from another viewing angle;

[0025] Figure 6 It is a schematic diagram of the cutaway structure of the mobile box in the present invention;

[0026] Figure 7 It is a schematic diagram of a three-dimensional structure in which a servo motor, a movable connecting rod, a placement plate, a first rotating bracket, a second rotating bracket, a T-shaped connecting tube, a movable ball rod and a movable connecting piece cooperate with each other in the present invention;

[0027] Figure 8 It is a system flow chart of the present invention.

[0028] In the figure: 1, base; 2, control panel; 3, first electric push rod; 4, lifting cylinder; 5, support plate; 6, movable rail; 7, moving box; 8, sliding block; 9, positioning rotator; 10, placement ring; 11, rotating column; 12, movable motor; 13, second electric push rod; 14, battery pack shell to be processed; 15, positioning structure; 16, mounting plate; 17, six-axis manipulator automatic laser welding machine; 18, placement rack; 19, articulated rack; 20, active telescopic rod; 21, movable seat; 22, movable Movable groove frame; 23. Movable rod; 24. Movable groove; 25. Positioning plate; 26. Connecting bracket; 27. Rotating motor; 28. Positioning frame; 29. ​​Movable frame; 30. Servo motor; 31. Rotating shaft; 32. Rotating connecting piece; 33. Bearing connecting seat; 34. Movable connecting rod; 35. Grinding motor; 36. Placement plate; 37. First rotating bracket; 38. Moving connecting rod; 39. Grinding wheel; 40. Second rotating bracket; 41. T-type connecting tube; 42. Movable ball rod; 43. Movable connecting piece. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1: Figure 1-Figure 8 As shown, the battery pack shell automatic laser welding equipment based on intelligent control includes a base 1, a control panel 2, a positioning rotator 9 and a lifting cylinder 4 are respectively provided on one side of the top of the base 1, four columns distributed along the circumference of the positioning rotator 9 are provided on the top of the base 1, a placement ring 10 is fixedly connected to the top of the column, a rotating column 11 is provided on the output end of the positioning rotator 9, four connecting rods are provided at equal angles on the outer wall of the rotating column 11, and a movable motor 12 slidably connected to the outer wall of the placement ring 10 is fixedly connected to the end of the connecting rod away from the rotating column 11, and a placement plate is provided on the output end of the movable motor 12;

[0031] By providing a positioning rotator 9, a placement ring 10 and a rotating column 11, four battery pack shells can be laser welded and the weld surface polished at one time, and the battery pack shells can be laser welded and the weld surface polished successively. The positioning rotator 9 rotates at an angle of ninety degrees each time, and the movable motor 12 can drive the battery pack shell to rotate, so as to facilitate laser welding and weld surface polishing of the edges around the battery pack shell;

[0032] A positioning structure 15 is provided on the placement plate, and the upper limit of the positioning structure 15 is connected to the battery pack shell 14 to be processed. A support plate 5 is provided on the output end of the lifting cylinder 4, and a mounting plate 16 and a six-axis manipulator automatic laser welding machine 17 are provided on the top of the support plate 5. By setting the six-axis manipulator automatic laser welding machine 17, the laser direction position can be automatically adjusted to facilitate accurate laser welding of the battery pack shell;

[0033] The other side of the top of the base 1 is respectively provided with a second electric push rod 13, a movable rail 6 and a first electric push rod 3, the output end of the first electric push rod 3 is connected to the lifting cylinder 4, a sliding block 8 is slidably connected to the movable rail 6, the output end of the second electric push rod 13 is connected to the sliding block 8, a push cylinder is fixedly installed on the top of the sliding block 8, and a moving box 7 is provided on the output end of the push cylinder; the position of the grinding wheel 39 in the Y-axis direction can be adjusted by setting the push cylinder, and the position of the grinding wheel 39 in the X-axis direction can be adjusted by setting the second electric push rod 13 and the sliding block 8. The above treatment can adjust the position of the grinding wheel 39 so that it can be in precise contact with the weld and grind off the holes and protrusions on the weld surface;

[0034] A servo motor 30 is provided on the inner wall of the top end of the moving box 7 away from the rotating column 11, a placement plate 36 is provided on the inner wall of the bottom end of the moving box 7, two second rotating brackets 40 are provided at intervals on the side of the top of the placement plate 36 away from the rotating column 11, and two first rotating brackets 37 are provided at intervals on the end of the top of the placement plate 36 close to the rotating column 11. A rotating shaft 31 that passes through the second rotating bracket 40 and extends to the outside is provided on the output end of the servo motor 30, and a rotating connector 32 is provided on the end of the rotating shaft 31 close to the rotating column 11;

[0035] A fixed shaft is provided at one end of the rotating connecting member 32 close to the rotating column 11, a T-shaped connecting tube 41 is sleeved on the fixed shaft, a movable ball rod 42 is provided at the bottom of the T-shaped connecting tube 41, and the movable ball rod 42 is hinged with a movable connecting member 43, and one end of the movable connecting member 43 close to the rotating column 11 is movably connected to the bearing connecting seat 33, and one end of the bearing connecting seat 33 close to the rotating column 11 is connected to a movable connecting rod 34 that penetrates the first rotating bracket 37 and extends to the outside thereof, and one end of the movable connecting rod 34 away from the servo motor 30 is connected to a movable connecting rod 38 that penetrates the inner wall of the moving box 7 and extends to the outside thereof through a connecting block, and one end of the movable connecting rod 38 away from the moving box 7 is fixedly connected to a grinding motor 35, and a grinding wheel 39 is provided on the output end of the grinding motor 35;

[0036] The control panel 2 is internally provided with a processor, a data collection module, a data analysis module and an execution module;

[0037] The data collection module is used to collect the welding surface condition information on the battery pack shell 14 to be processed during the laser welding of the battery pack shell, and transmit it to the data analysis module, and the welding surface condition information is composed of the weld hole area factor, the weld roughness factor and the weld depth-to-width ratio factor;

[0038] It should be noted that: the weld hole area factor represents the sum of the areas of multiple holes on the weld collected by the infrared measurement light curtain sensor, the weld roughness factor represents the weld surface roughness data collected by the roughness tester, and the weld depth-to-width ratio factor represents the ratio of the weld depth to the weld width collected by the weld size detector. The infrared measurement light curtain sensor, the roughness tester and the weld size detector are all installed on the mounting plate 16. Three electric telescopic rods are equidistantly arranged on one side of the mounting plate 16. The three electric telescopic rods are The output end of the rod is respectively provided with an infrared measuring light curtain sensor, a roughness tester and a weld size detector. The larger the weld hole area factor is, the more holes there are on the weld. The larger the hole size is, the worse the welding quality of the laser welding of the battery pack shell is. The larger the weld roughness factor is, the rougher the weld surface is, the worse the welding quality of the laser welding of the battery pack shell is. The larger the weld depth-to-width ratio factor is, the deeper the weld depth is, and the smaller the weld width is, the worse the welding quality of the laser welding of the battery pack shell is.

[0039] The data analysis module performs a battery pack shell laser welding process control and analysis operation based on the welding surface condition information received on the battery pack shell 14 to be processed during the battery pack shell laser welding process. The specific steps are as follows:

[0040] Step 1: Obtain the welding surface condition information on the battery pack shell 14 to be processed during the laser welding of the battery pack shell, and calibrate the weld hole area factor, weld roughness factor and weld depth-to-width ratio factor as M, C and S respectively;

[0041] Step 2: According to the formula: , the welding surface condition magnitude G on the battery pack shell 14 to be processed during the laser welding of the battery pack shell is obtained, where j, k and l are process correction factors, l is greater than k and greater than j. ;

[0042] It should be noted that: the larger the value of the welding surface condition magnitude G, the better the welding quality of the laser welding of the battery pack shell surface, so that the battery pack shell after laser welding meets the production quality requirements, and the welding surface condition magnitude G is inversely proportional to the weld hole area factor M, the weld roughness factor C and the weld depth-to-width ratio factor S, indicating that reducing the weld hole area, reducing the weld roughness and reducing the weld depth-to-width ratio can improve the welding quality of the laser welding of the battery pack shell surface;

[0043] Step 3: When the welding surface condition magnitude G on the battery pack shell 14 to be processed during the laser welding of the battery pack shell is greater than the maximum value of the preset range g, is within the preset range g, or is less than the minimum value of the preset range g, a process excellent signal, a process general signal, and a process poor signal are generated respectively;

[0044] and transmitting the process excellent signal, the process average signal and the process poor signal to the execution module through the processor;

[0045] After receiving the process excellent signal, the execution module does not make any processing;

[0046] After receiving the general process signal, the execution module immediately adjusts the working parameters of the six-axis manipulator automatic laser welding machine 17, increases the welding speed of the six-axis manipulator automatic laser welding machine 17, reduces the welding voltage and welding current of the six-axis manipulator automatic laser welding machine 17, and reduces the ratio between the depth and width of the weld on the battery pack shell;

[0047] After receiving the process poor signal, the execution module immediately adjusts the working parameters of the six-axis manipulator automatic laser welding machine 17 and immediately controls the servo motor 30 to work, thereby increasing the welding speed of the six-axis manipulator automatic laser welding machine 17 and reducing the welding voltage and welding current of the six-axis manipulator automatic laser welding machine 17. The servo motor 30 drives the rotating shaft 31 to rotate, and the rotating shaft 31 drives the rotating connecting piece 32 to rotate. The rotating connecting piece 32 drives the T-shaped connecting tube 41 and the movable ball rod 42 to move. The movable ball rod 42 The movement drives the movable connecting member 43 and the bearing connecting seat 33 to move, and the movement of the bearing connecting seat 33 drives the movable connecting rod 34 to make reciprocating linear motion along the direction passing through the first rotating bracket 37, thereby driving the grinding wheel 39 to move left and right, and adjusting the position of the grinding wheel 39 to make it contact with the weld on the battery pack shell. The grinding motor 35 drives the grinding wheel 39 to grind the weld surface, grind away the holes and protrusions on the weld surface, reduce the weld hole area on the battery pack shell, and reduce the weld surface roughness on the battery pack shell;

[0048] The present invention collects welding surface condition information during the laser welding process of the battery pack shell, and transmits the collected information to a data analysis module. The data analysis module processes to obtain excellent process signals, general process signals and poor process signals, and transmits the obtained signals to an execution module via a processor. The execution module is used to analyze and control the laser welding process of the battery pack shell. The weld hole area, weld roughness and weld depth-to-width ratio as well as the ratio between the three can be intelligently adjusted according to the specific conditions during the laser welding process of the battery pack shell, and the battery pack shell can be efficiently and excellently laser welded to ensure that the battery pack shell after laser welding meets the production quality requirements.

[0049] Embodiment 2: Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the positioning structure 15 includes a placement frame 18 fixedly connected to the placement plate, an active telescopic rod 20 is fixedly installed in the placement frame 18, a movable frame 29 is fixedly installed at one end of the active telescopic rod 20, the movable frame 29 is hinged with the articulated frame 19, the articulated frame 19 is hinged with the positioning frame 28, a positioning plate 25 is fixedly installed at the end of the positioning frame 28, and a distance adjustment component is connected to the positioning frame 28. The active telescopic rod 20 drives the movable frame 29 to move, the movable frame 29 moves to drive the articulated frame 19 to move, and the articulated frame 19 moves to drive the positioning frame 28 to move, so that the positioning frame 28 flips and drives the positioning plate 25 to move inward for clamping, so that the inner wall of the positioning plate 25 fits the outer wall of the battery pack shell 14 to be processed to limit and fix it;

[0050] The distance adjustment component includes a rotating motor 27 fixedly connected to the placement frame 18, the output shaft of the rotating motor 27 is fixedly installed with a movable slot frame 22, and a plurality of groups of movable grooves 24 are arranged on the movable slot frame 22, and the movable groove 24 is slidably connected with a movable rod 23, and the movable rod 23 is fixedly connected with a movable seat 21, and the movable seat 21 is hinged with the positioning frame 28. The movable slot frame 22 is driven to rotate by the rotating motor 27, so that the movable rod 23 drives the movable seat 21 to move, and the movement of the movable seat 21 drives the positioning frame 28 to move, and the position of the positioning frame 28 is adjusted, so that the positioning plate 25 moves outward, and the position of the positioning plate 25 can be adjusted to clamp battery pack shells of different specifications, and the movable seat 21 is slidably connected with a connecting bracket 26 fixedly connected to the placement frame 18;

[0051] The above processing can be used to appropriately and stably limit the battery pack shells of different specifications, thereby preventing the battery pack shells from moving during laser welding and inaccurate welding positions during laser welding, thereby improving the welding quality of the battery pack shells during laser welding.

[0052] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic laser welding device for battery pack shell based on intelligent control, comprising a base (1), characterized in that: A control panel (2), a positioning rotator (9) and a lifting cylinder (4) are respectively provided on one side of the top of the base (1); four columns are provided on the top of the base (1) and are distributed along the circumference of the positioning rotator (9); a placement ring (10) is fixedly connected to the top of the columns; a rotating column (11) is provided on the output end of the positioning rotator (9); four connecting rods are provided on the outer wall of the rotating column (11) at equal angles; a movable motor (12) is fixedly connected to the outer wall of the placement ring (10) at one end of the connecting rod away from the rotating column (11); and a placement plate is provided on the output end of the movable motor (12); A positioning structure (15) is provided on the placement plate, the upper limit of the positioning structure (15) is connected to the battery pack shell (14) to be processed, a support plate (5) is provided on the output end of the lifting cylinder (4), and a mounting plate (16) and a six-axis manipulator automatic laser welding machine (17) are respectively provided on the top of the support plate (5); The control panel (2) is internally provided with a processor, a data collection module, a data analysis module and an execution module; The data collection module is used to collect welding surface condition information on the battery pack shell (14) to be processed during the laser welding of the battery pack shell, and transmit it to the data analysis module, wherein the welding surface condition information is composed of a weld hole area factor, a weld roughness factor, and a weld depth-to-width ratio factor; The weld hole area factor represents the sum of the areas of multiple holes on the weld collected by the infrared measurement light curtain sensor, the weld roughness factor represents the weld surface roughness data collected by the roughness tester, and the weld depth-to-width ratio factor represents the ratio of the weld depth to the weld width collected by the weld size detector; The data analysis module performs the battery pack shell laser welding control and analysis operations based on the above information received, and calibrates the weld hole area factor, weld roughness factor and weld depth-to-width ratio factor as M, C and S respectively. Obtaining a welding surface condition magnitude G on a battery pack shell (14) to be processed during laser welding of the battery pack shell, wherein j, k and l are all process correction factors, l is greater than k, greater than j, and j+k+l=2.7096; The welding surface condition level G on the battery pack shell (14) to be processed during the laser welding of the battery pack shell is calculated, and the welding surface condition level G is compared with the preset welding surface condition level g to obtain a process excellent signal, a process general signal and a process poor signal. The various types of process signals obtained are transmitted to the execution module through the processor, and the execution module performs corresponding operation processing according to the various types of process signals obtained.

2. The battery pack shell automatic laser welding equipment based on intelligent control according to claim 1 is characterized in that: A second electric push rod (13), a movable rail (6) and a first electric push rod (3) are respectively provided on the other side of the top of the base (1); an output end of the first electric push rod (3) is connected to a lifting cylinder (4); a sliding block (8) is slidably connected to the movable rail (6); an output end of the second electric push rod (13) is connected to the sliding block (8); a pushing cylinder is fixedly installed on the top of the sliding block (8); and a moving box (7) is provided on the output end of the pushing cylinder.

3. The battery pack shell automatic laser welding equipment based on intelligent control according to claim 1 is characterized in that: The positioning structure (15) comprises a placement frame (18) fixedly connected to a placement plate, an active telescopic rod (20) fixedly installed in the placement frame (18), a movable frame (29) fixedly installed at one end of the active telescopic rod (20), the movable frame (29) is hinged to an articulated frame (19), the articulated frame (19) is hinged to a positioning frame (28), a positioning plate (25) is fixedly installed at the end of the positioning frame (28), and a distance adjustment component is connected to the positioning frame (28).

4. The battery pack shell automatic laser welding equipment based on intelligent control according to claim 3 is characterized in that: The pitch adjustment assembly comprises a rotating motor (27) fixedly connected to a placement frame (18); a movable slot frame (22) is fixedly mounted on the output shaft of the rotating motor (27); a plurality of groups of movable grooves (24) are arranged on the movable slot frame (22); the movable grooves (24) are slidably connected to movable rods (23); the movable rods (23) are fixedly connected to movable seats (21); the movable seats (21) are hinged to the positioning frame (28); the movable seats (21) are slidably connected to a connecting bracket (26) fixedly connected to the placement frame (18).

5. The battery pack shell automatic laser welding equipment based on intelligent control according to claim 2 is characterized in that: A servo motor (30) is provided on the inner wall of the top end of the moving box (7) away from the rotating column (11); a placement plate (36) is provided on the inner wall of the bottom end of the moving box (7); two second rotating brackets (40) are provided at intervals on the top of the placement plate (36) away from the rotating column (11); two first rotating brackets (37) are provided at intervals on the top of the placement plate (36) close to the rotating column (11); a rotating shaft (31) is provided on the output end of the servo motor (30) and passes through the second rotating bracket (40) and extends to the outside thereof; and a rotating connecting piece (32) is provided on the end of the rotating shaft (31) close to the rotating column (11).

6. The battery pack shell automatic laser welding equipment based on intelligent control according to claim 5 is characterized in that: The rotating connecting member (32) is provided with a fixed shaft at one end close to the rotating column (11), and a T-shaped connecting tube (41) is sleeved on the fixed shaft. A movable ball rod (42) is provided at the bottom of the T-shaped connecting tube (41), and the movable ball rod (42) is hinged with a movable connecting member (43). The movable connecting member (43) is movably connected to a bearing connecting seat (33) at one end close to the rotating column (11). The bearing connecting seat (33) is connected to a movable connecting rod (34) that passes through the first rotating bracket (37) and extends to the outside thereof at one end close to the rotating column (11). The movable connecting rod (34) is connected to a movable connecting rod (38) that passes through the inner wall of the moving box (7) and extends to the outside thereof at one end away from the servo motor (30) through a connecting block. The movable connecting rod (38) is fixedly connected to a grinding motor (35) at one end away from the moving box (7), and a grinding wheel (39) is provided on the output end of the grinding motor (35).

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