CN112122815A

CN112122815A - Welding system and module side plate welding method

Info

Publication number: CN112122815A
Application number: CN202011061423.6A
Authority: CN
Inventors: 吴轩; 冉昌林; 熊五岳; 杨伟伟
Original assignee: Jiangsu Yifei Laser Equipment Co ltd
Current assignee: Jiangsu Yifei Laser Equipment Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2020-12-25

Abstract

The invention relates to the technical field of battery production, and discloses a welding system and a module side plate welding method, wherein the welding system comprises a welding fixing tool and welding equipment; the welding and fixing tool comprises a fixing unit, the fixing unit comprises a mounting plate, a pressing plate and a pushing structure, the mounting plate is hoisted on the support assembly, the mounting plate is connected with the two pressing plates which are arranged oppositely in a sliding mode along a first direction, the pressing plates are connected with the pushing structure which is arranged along the first direction, and positioning grooves which are matched with welding seam positions are formed in the pressing plates; the side of welded fastening frock is located to welding equipment, and welding equipment includes displacement drive structure and welding head, and welding head connects in displacement drive structure. According to the welding system and the module side plate welding method provided by the invention, the welding fixing tool is arranged to pertinently compress and fix the welding seam position of the workpiece, so that the welding seam position is favorably limited, the positioning accuracy of the welding position of the workpiece is improved, and the welding error is reduced.

Description

Welding system and module side plate welding method

Technical Field

The invention relates to the technical field of battery production, in particular to a welding system and a module side plate welding method.

Background

In today where energy competition is becoming more intense, it has become a common consensus to find products that replace petroleum energy. The rapid development of the battery industry is a trend, which has a wide application in industrial production, life and other aspects, and city electric buses are quietly started. The battery cell is an important component unit of the battery, and the battery is formed by assembling the battery cell module by the battery cell firstly and then packaging the battery cell module by a soft bag.

Some battery modules include square frame and arrange the electric core in square frame, and wherein, square frame is formed by the end plate and the curb plate welding of two liang of relative settings, and welding quality decides the processingquality of battery module, consequently, more and more severe to the requirement of group end plate and curb plate welding process, need guarantee that the welding position is accurate to reduce the defective rate of welding position. At present, in order to facilitate welding of the end plate and the side plate in the prior art, the end plate and the side plate need to be fixed by a simple and convenient device, the accuracy of a welding position is ensured, and errors are reduced.

The welding system of curb plate generally sets up along the transfer chain among the prior art, and the module carries out fixed position through the frock board and removes along the transfer chain along the frock board is integrative. When current curb plate welding, the curb plate generally directly carries out fixed position through the frock board on the transfer chain, has the positioning accuracy relatively poor, the great problem of error.

Disclosure of Invention

The embodiment of the invention provides a welding system and a module side plate welding method, which are used for solving or partially solving the problems of poor positioning accuracy and large error caused by the fact that a side plate is generally and directly fixed and positioned by a tooling plate on a conveying line in the conventional side plate welding process.

The embodiment of the invention provides a welding system, which comprises a welding fixing tool and welding equipment; the welding and fixing tool comprises a fixing unit, the fixing unit comprises a mounting plate, a pressing plate and a pushing structure, the mounting plate is hoisted on a support assembly, the mounting plate is connected with the two pressing plates which are oppositely arranged in a sliding mode along a first direction, the pressing plate is connected with the pushing structure which is arranged along the first direction, and the pressing plate is provided with a positioning groove which is used for being matched with the position of a welding line; welding equipment locates the side of welded fastening frock, welding equipment includes displacement drive structure and welding head, welding head connect in the displacement drive structure.

On the basis of the scheme, two groups of opposite fixing units are arranged on the bracket component at intervals; the fixing unit is connected with the bracket component in a position adjustable mode along a second direction.

On the basis of the scheme, the mounting plate is provided with a slot which penetrates through the bottom edge of the mounting plate between the two pressing plates.

On the basis of the scheme, the inner side surface of the pressing plate is connected with a pressing block on at least one side of the positioning groove; the pressing block is arranged along the length direction of the positioning groove, and the width of one side, connected with the pressing plate, of the pressing block is smaller than or equal to the width of one side, far away from the pressing plate, of the pressing block.

On the basis of the scheme, the outer side surface of the pressing plate is connected with a protective cover at the periphery of the positioning groove.

On the basis of the scheme, the support assembly comprises two support frames which are oppositely arranged and a connecting plate, two ends of the connecting plate are correspondingly connected with the two support frames respectively, and the fixing unit is connected to the connecting plate; the end part of the connecting plate is connected with the corresponding support frame in an adjustable mode along a first direction.

On the basis of the scheme, the displacement driving structure is connected with a fixing plate, the welding head is connected with the fixing plate, and the fixing plate is further connected with a dust removal structure and a vision structure.

On the basis of the scheme, the dust removal structure comprises a dust collection cover, and the dust collection cover is respectively connected to the fixed plate in an adjustable mode along the direction perpendicular to the fixed plate and the direction parallel to the fixed plate.

On the basis of the scheme, the displacement driving structure comprises a six-axis robot.

The embodiment of the invention also provides a module side plate welding method based on the welding system, which comprises the following steps: moving the module with the assembled side plates to the bracket assembly; moving the fixing unit, and correspondingly pressing the pressing plate at the position of the welding seam; and welding the welding positions in sequence by using welding equipment.

According to the welding system and the module side plate welding method provided by the embodiment of the invention, the welding fixing tool is arranged for fixing and positioning the workpiece, the pressing plate and the positioning groove are specifically arranged for compressing and fixing the welding seam position of the workpiece in a targeted manner, and the pressing plate is pressed around the welding seam position, so that the welding seam position is favorably limited, the welding efficiency and accuracy are improved, the workpiece welding fixing and positioning can be better realized, the positioning accuracy of the welding position of the workpiece is favorably improved, and the welding error is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is an overall schematic view of a welding system provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a welding fixture provided in an embodiment of the present invention;

fig. 3 is a schematic front view of a welding fixture according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a welding fixture provided in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a fixing unit provided in an embodiment of the present invention;

FIG. 6 is a schematic top view of a fixing unit provided in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a welding apparatus provided by an embodiment of the present invention;

FIG. 8 is a first schematic view of a welding head connection provided by an embodiment of the present invention;

FIG. 9 is a second schematic illustration of a welding head attachment provided by an embodiment of the present invention;

fig. 10 is a third schematic illustration of a welding head attachment provided by an embodiment of the present invention.

Reference numerals:

1. a support frame; 2. a connecting plate; 3. mounting a plate; 4. pressing a plate; 5. a pushing structure; 6. briquetting; 7. a protective cover; 8. buffering the limiting part; 9. fixing a limiting part; 10. a sliding table; 11. a cylinder; 12. positioning a groove; 13. grooving; 14. an opening; 15. a cabinet; 16. a six-axis robot; 17. welding a machine head; 18. welding a head; 19. a dust hood; 20. a first guide bar; 21. a first clamp head; 22. a second guide bar; 23. a second clamp head; 24. a fixing plate; 25. a vision camera; 26. a light source; 27. a fixing ring; 28. a support; 29. a conveying line; 30. a module; 31. and (5) fixing blocks.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a welding system including a welding fixture and a welding device. The welding system is provided with a welding fixing tool for fixing a workpiece in the welding process, so that the workpiece is accurately positioned. The welding apparatus is used to perform a welding operation. Referring to fig. 2, the welding fixture includes a fixing unit. The fixed unit includes mounting panel 3, clamp plate 4 and promotion structure 5, and the hoist and mount of mounting panel 3 are on the bracket component, and there are two relative clamp plates 4 that set up along first direction sliding connection on the mounting panel 3, and clamp plate 4 is connected with the promotion structure 5 that sets up along the first direction, offers on the clamp plate 4 to be used for with welding seam position assorted constant head tank 12.

The mounting plate 3 can be suspended above the welding station through a bracket assembly. When a workpiece to be welded, such as the battery module 30, moves to the welding station, the two pressing plates 4 on the mounting plate 3 can be pushed and pressed at the weld positions on the two sides of the workpiece by the pushing structure 5, and the positioning grooves 12 on the pressing plates 4 are placed corresponding to the weld positions. I.e. the weld position is located in the positioning slot 12, the positioning slot 12 is a through hole provided on the platen 4, so that the welding head 18 can pass through the positioning slot 12 to weld the weld position. The pressing plate 4 is pressed around the position of the welding seam, so that the workpiece can be better welded and positioned.

And the pressing plates 4 are connected with the mounting plate 3 in a sliding mode along the first direction, so that the distance between the two pressing plates 4 can be flexibly adjusted, the workpieces can be conveniently placed, and the clamping device is suitable for workpieces of different sizes.

The side of welded fastening frock is located to welding equipment, and welding equipment includes displacement drive structure and welding head 17, and welding head 17 connects in displacement drive structure. The displacement drive structure is used for driving the welding head 17 to move so as to perform welding operation on the welding position. The fixing unit of the welding fixing tool is required to be located within the displacement range of the displacement driving structure.

The welding system that this embodiment provided sets up the welded fastening frock and is used for carrying out fixed position to the work piece, specifically sets up clamp plate 4 and constant head tank 12 and is used for the pertinence to the welding seam position of work piece compress tightly fixedly, presses through clamp plate 4 and establishes around the welding seam position, existing being favorable to injecing the welding seam position, improve welding efficiency and accuracy, and realization work piece welded fixed position that can be better, be favorable to improving the positioning accuracy of work piece welding position, reduce welding error.

Further, this welded fastening frock can use with the cooperation of work piece frock board. The workpiece can be placed on the tooling plate, and meanwhile, the welding and fixing tooling is used for fixing and positioning.

On the basis of the above embodiment, further referring to fig. 2, two sets of opposite fixing units are spaced on the bracket assembly. Namely, the bracket component is connected with two groups of fixing units, and the pressing plates 4 of the two groups of fixing units are arranged oppositely. The two groups of fixing units can clamp and fix the workpiece at two ends of the workpiece, so that the positioning accuracy is improved. And the both ends of battery module 30 are connected with the end plate respectively, and the both sides of module 30 all need the welding curb plate, and every curb plate all needs the welding in both ends and end plate department of meeting. I.e. there are four welding positions on both sides of the module 30. Two sets of fixing units are provided, i.e. four press plates 4 can be pressed and positioned at four welding positions simultaneously.

On the basis of the above embodiment, further, referring to fig. 3, the fixing unit is connected with the bracket assembly in a position adjustable manner along the second direction. I.e. the mounting plate 3 is adapted for position adjustable connection with the carriage assembly in the second direction. The second direction may be a direction perpendicular to the first direction. The fixing unit is position-adjustable in the second direction, and the pressing plate 4 is position-adjustable in the first direction with respect to the mounting plate 3. Therefore, the position of the pressing plate 4 relative to the workpiece can be adjusted in two directions, the tool can adapt to more workpieces with different sizes, and the applicability and the flexibility of the tool are improved.

Further, the fixing unit and the bracket assembly can be connected in a sliding mode along the second direction; the sliding connection of the two can be realized, for example, by a rail runner structure. And the bracket component is connected with a driving structure for driving the fixing unit to move along the second direction. The driving structure may be a sliding table 10, a cylinder 11, a lead screw nut, etc. to provide a linear movement, and is not limited specifically.

On the basis of the above embodiment, further, the bracket assembly is provided with a limiting assembly along the moving path of the fixing unit. The limiting assembly is used for limiting the moving position of the fixing unit. The limiting assembly can be preset according to actually welded workpieces, so that the fixing unit can accurately stop at the position of the preset limiting assembly, and the fixing unit can be accurately positioned.

The limiting assembly comprises a buffering limiting part 8 and/or a fixing limiting part 9. The buffer stop 8 is a member with elastic contraction, and may be a hydraulic buffer or an elastic member, for example. The fixed position-limiting member 9 is a hard position-limiting member, such as a stopper. Can set up buffering locating part 8 and fixed locating part 9 simultaneously, buffer earlier and slow down, stop the location again, realization spacing location that can be better.

In addition to the above embodiments, referring to fig. 2 and 4, the mounting plate 3 has a slot 13 formed between the two pressing plates 4 and penetrating the bottom edge of the mounting plate 3. Preferably, the width of the slot 13 in the first direction may be greater than the width of the workpiece. The end part of the workpiece can penetrate out of the mounting plate 3 from the slot 13, so that the tool can adapt to a longer workpiece and a workpiece with a welding seam position closer to the middle part.

On the basis of the above embodiment, further, referring to fig. 5, the inner side surface of the pressing plate 4 is connected with the pressing block 6 on at least one side of the positioning groove 12; set up briquetting 6, but briquetting 6 butt supports tight work piece when being favorable to the welding on the surface of work piece, realizes accurate location. Pressing blocks 6 can be arranged on one side of the positioning grooves 12 on the inner side surfaces of the pressing plates 4, and the pressing blocks 6 can also be arranged on two sides of the positioning grooves 12, and the method is not limited. The inner side surface of the pressing plate 4 is the surface for contacting the workpiece, i.e., the surface opposite to the two pressing plates 4 on one mounting plate 3.

Furthermore, one side of the pressing block 6, which is far away from the pressing plate 4, extends to the corresponding position inside the positioning groove 12. That is, referring to fig. 3, the side of the pressing block 6 away from the pressing plate 4 shields a part of the space of the positioning groove 12, so that the space of the positioning groove 12 is further limited under the shielding of the pressing block 6. Can set up one side that briquetting 6 kept away from clamp plate 4 and press close to the welding seam position to when clamp plate 4 compresses tightly the work piece, briquetting 6 is pressed close to the welding seam position and is supported and press on the work piece, is favorable to improving welding position's accuracy. The width of the positioning slot 12 may be wider than the width of the weld location. The welding head 18 can thus be easily inserted into the wide positioning slot 12 and can be welded precisely within the limits of the pressure piece 6.

The pressing block 6 is arranged along the length direction of the positioning groove 12. Namely, the pressing block 6 is arranged along the positioning groove 12. And the width of the side of the pressing block 6 connected with the pressing plate 4 is less than or equal to the width of the side of the pressing block 6 far away from the pressing plate 4. Referring to fig. 6, the width is the width of the pressing block 6 in the second direction. The pressing block 6 is arranged to be larger in width away from one side of the pressing plate 4, so that welding accuracy is improved by pressing close to a welding line, the contact area of the pressing block and a workpiece can be increased, and stable pressing is achieved. The width of the connecting side of the pressing block 6 and the pressing plate 4 is small, so that the welding head 18 can be inserted smoothly. Preferably, the side of the pressing block 6 connected with the pressing plate 4 is located at the side of the positioning groove 12. I.e., the side does not extend into the positioning slot 12 and does not have space to obscure the positioning slot 12, to facilitate insertion of the welding head 18.

Further, the compact 6 may be a red copper compact.

On the basis of the above embodiment, further, the outer side surface of the pressure plate 4 is connected with the protective cover 7 at the periphery of the positioning groove 12. The protective cover 7 is positioned on the periphery of the positioning groove 12 on the outer side surface of the pressing plate 4 and used for protection during welding, and safety performance is improved.

On the basis of the above embodiment, further, referring to fig. 1 and fig. 2, the bracket assembly includes two support frames 1 disposed oppositely and a connecting plate 2 having two ends respectively connected to the two support frames 1, and the fixing unit is connected to the connecting plate 2.

On the basis of the above embodiment, further, the end of the connecting plate 2 is connected with the corresponding support frame 1 along the first direction position adjustably. Namely, two ends of the connecting plate 2 are respectively connected with the corresponding support frames 1 along the first direction in an adjustable way. Likewise, the end of the connecting plate 2 may be slidably connected to the corresponding supporting frame 1 in the first direction, and a driving structure is connected to drive the movement of the connecting plate 2. The welding station can be arranged on one side of the support frame 1 along the first direction, so that the connecting plate 2 and the fixing unit can be initially moved to the side edge of the welding station along the support frame 1, and after the workpiece is placed in place at the welding station, the connecting plate 2 and the fixing unit are moved to the workpiece. The fixed tool can be prevented from interfering the welding station when not needed.

Further, the first direction may be a width direction of the workpiece; the second direction may be a length direction of the workpiece. The welding fixing tool can be matched with the conveying line 29 for use. One side of the support is intended to pass through the conveyor line 29. Specifically, one side of the support frame 1 in the first direction may be connected to the conveying line 29, and as shown in fig. 1, the conveying line 29 may pass through the first side of the support frame 1; so that the workpiece flows through the first side of the support frames 1, a welding station can be arranged between the support frames 1 on the two sides, and a stopping structure can be arranged at the corresponding part of the conveying line 29. The connection plate 2 and the fixing unit may initially be located at the second side of the support frame 1 without disturbing the normal movement of the conveyor line 29. When the workpiece moves to a preset position between the two support frames 1, the stop structure can be used for stopping the movement of the workpiece tooling plate; then the connecting plate 2 and the fixing unit are moved to the first side of the support frame 1 to press and position the workpiece, and then welding is carried out.

Further, the spacing between two fixed units on the carriage assembly may initially be greater than the length of the workpiece; therefore, in the process of moving from the second side to the first side of the support frame 1, the workpiece is correspondingly positioned between the two fixing units, so that the workpiece and the fixing units can avoid interference in the height direction, and the fixing units can be guaranteed to smoothly move to the corresponding positions of the end parts of the workpiece. The fixing unit can then be moved along the connecting plate 2 to a predetermined position, i.e. a position corresponding to the position of the weld seam on the workpiece. The pushing structure 5 then pushes the pressing plate 4 against the workpiece.

One side of the support frame 1 is used for passing through the conveying line 29; the opposite side of support frame 1 can set up rack 15, and the inside various electrical components that are used for placing the welded fastening frock of rack 15.

Furthermore, a vertical driving structure can be connected between the fixing unit and the bracket assembly; for driving movement of the stationary unit in the vertical direction. Or the conveying line 29 can be provided with a jacking structure at the corresponding position of the welding station; for effecting movement of the workpiece in a vertical direction. At this time, the fixing unit may be initially located at a position above the welding station where there is no high interference with the workpiece. When the workpiece stops at the welding station, the fixing unit or the workpiece needs to be moved in the vertical direction, so that the fixing unit and the workpiece reach the height matching position, and the workpiece is smoothly pressed and positioned by the fixing unit.

Further, referring to fig. 5, either of the pressing plates 4 is slidably coupled to the mounting plate 3 at both sides in the first direction, respectively. The pressing plate 4 can be L-shaped, one side of the pressing plate is used for being connected with the mounting plate 3 in a sliding mode, and the two sides of the side can be connected with the mounting plate 3 through guide rail sliding block structures respectively so as to realize stable connection and fixation of the pressing plate 4; and the other side can be perpendicular to the mounting plate 3 for arranging the positioning groove 12 and the connecting pressing block 6.

Further, referring to fig. 5, the top of the mounting plate 3 is provided with an opening 14, and the opening 14 is used for passing through the bracket assembly; and the mounting plate 3 is located above the opening 14 for connection to the bracket assembly. Specifically, the mounting plate 3 is vertically connected with an adapter plate above the opening 14, and the adapter plate is used for being connected with the bracket assembly. This connection structure is advantageous for achieving a firm stable connection of the mounting plate 3.

On the basis of the above embodiment, further, referring to fig. 8, the displacement driving structure is connected with a fixing plate 24, the welding head 17 is connected with the fixing plate 24, and the dust removing structure and the vision structure are also connected to the fixing plate 24. The dust removal structure is used for absorbing and removing impurities such as flying dust generated in the welding process, and avoids influencing and damaging the outside. The visual structure is used for identifying and judging the position of the welding seam, provides guidance for the movement of the displacement driving structure and ensures that the welding head 17 performs welding at the position of the welding seam.

On the basis of the above embodiment, further, the dust removing structure comprises a dust hood 19, and the dust hood 19 is connected to the fixing plate 24 in a position-adjustable manner along a direction perpendicular to the fixing plate 24 and a direction parallel to the fixing plate 24. The position of the dust hood 19 can be flexibly adjusted, so that the setting angle and the direction of the dust hood 19 are adapted to the welding head 17, and the dust collection effect is ensured.

Specifically, referring to fig. 8 and 9, the dust hood 19 is connected to a first guide rod 20, the first guide rod 20 is perpendicular to a fixing plate 24, a first clamp head 21 is disposed at the bottom of a second guide rod 22 parallel to the fixing plate 24, the first clamp head 21 is sleeved on the first guide rod 20, a second clamp head 23 is sleeved on the second guide rod 22, and the second clamp head 23 is fixed on the fixing plate 24.

The first clamp head 21 can be fixed at any position on the first guide rod 20, and the position of the dust collection cover 19 driven by the first guide rod 20 along the axial direction of the first guide rod 20, i.e. the direction perpendicular to the fixing plate 24, can be adjusted by adjusting the fixing positions of the first guide rod 20 and the first clamp head 21. Similarly, the second clamp head 23 can be fixed at any position on the second guide rod 22, and by adjusting the fixing positions of the second guide rod 22 and the second clamp head 23, the position of the second guide rod 22, which drives the first guide rod 20 and the dust hood 19, along the axial direction of the second guide rod 22, i.e., in the direction parallel to the fixing plate 24 can be adjusted.

The position of the dust hood 19 in two directions is adjustable through the arrangement of the first guide rod 20 and the second guide rod 22, the structure is simple, the operation is convenient, the flexibility of the position adjustment of the dust hood 19 is high, the electric component is not required for driving, and the complexity of the whole structure of the welding head 17 can be greatly reduced.

Further, the structure of the dust hood 19 that can adjust the position along two directions relative to the fixing plate 24 can also be other structures, such as a structure that a mounting hole is matched with a bolt, a slide block and slide groove structure, etc., so as to achieve the purpose of adjusting the position of the dust hood 19, which is not limited specifically.

The dust hood 19 is sleeved with a fixing ring 27, and the fixing ring 27 is rotatably connected with the first guide rod 20. The securing ring 27 can be fixed on the outside of the suction hood 19 in the form of a clip structure. The fixing ring 27 and the first guide rod 20 can be rotatably connected through a pin structure or a hinge structure, and the angle of the dust hood 19 can be flexibly adjusted.

Further, the dust hood 19 is formed with a chamfered opening at the bottom thereof and the chamfered opening is directed toward the welding head 18 of the welding head 17. The welding head 18 is a member of the welding head 17 that contacts the workpiece to perform welding. That is, the opening at the bottom of the dust hood 19 is inclined toward the welding head 18. Is favorable for better dust collection effect.

Further, the dust hood 19 may be connected to a dust suction power source through a pipe. The welding head may be a laser welding machine, and is not limited specifically.

Further, the vision structure includes a vision camera 25 disposed downward and a light source 26 correspondingly disposed below the vision camera 25. The vision camera 25 can obtain the workpiece image and judge the position of the weld joint through image recognition to guide the displacement driving structure to drive the welding head 17 to move to the position of the weld joint.

Further, referring to fig. 10, the light source 26 may be fixed to a fixing block 31, and the fixing block 31 is coupled to the fixing plate 24. The fixing block 31 can be connected with the fixing plate 24 in an up-and-down position adjustable manner. The position of the light source 26 can be adjusted flexibly, and the smooth operation of the visual structure is ensured. Specifically, the fixing block 31 may be connected to an adapter plate, which is connected to the fixing plate 24. The adapter plate can be provided with a long strip-shaped mounting groove, the fixing plate 24 is connected with the adapter plate at the mounting groove, and the vertical position adjustment can be realized.

On the basis of the above embodiment, further, referring to fig. 7, the displacement drive structure includes a six-axis robot 16. The flexible movement of the welding head 17 with multiple degrees of freedom can be realized, and the welding operation of the side plates of the module 30 at the welding seams at the two sides is convenient. The six-axis robot 16 may be secured to a support 28. The mounting plate 24 may be attached to a flange of the six-axis robot 16.

Further, the displacement driving structure may be other structures, for example, a four-axis robot or a multi-dimensional linear moving structure, and the like, and may be set according to actual needs, which is not limited specifically.

On the basis of the foregoing embodiment, further, the present embodiment provides a module side plate welding method based on any one of the foregoing welding systems, including: moving the side plate assembled module 30 to the bracket assembly; moving the fixing unit, and correspondingly pressing the pressing plate at the position of the welding seam; and welding the welding positions in sequence by using welding equipment.

The module 30 is movable along the conveyor line 29 to the carriage assembly. The assembly of the side panels may be completed during the transfer of the module 30 to the rack assembly. Place the curb plate on the module earlier promptly, the structure of curb plate accessible module self or other predetermined structures realize tentatively fixing. And then welding the side plates. The movable fixing unit correspondingly presses the pressing plate at the position of the welding seam, and specifically comprises: the initial fixing unit is located on the side of the conveying line 29, the fixing unit is moved to the position corresponding to the conveying line 29, then the fixing unit is correspondingly moved to the position corresponding to the welding seam of the pressing plate along the length direction of the module 30 from the end part of the module 30, and then the pressing plate is moved to press the module 30. Or the initial fixing unit is positioned above the transfer line 29, the fixing unit is moved downward or the die set 30 is moved upward and the position of the fixing unit along the length direction of the die set 30 is adjusted so that the pressing plate corresponds to the position of the weld, and then the pressing plate pressing die set 30 is moved.

On the basis of the above embodiments, further, the present embodiment provides a welding fixture for fixing and positioning the side plates of the battery module 30 in the side plate welding process of the battery module 30. Referring to fig. 1 and 2, the tool includes two opposite support frames 1 and a connecting plate 2 connected between the two support frames 1. Two fixing units are connected on the connecting plate 2 in a sliding way. Specifically, the two ends of the connecting plate 2 are respectively connected with the corresponding support frames 1 in a sliding manner along a first direction, and the connecting plate 2 is connected with a driving structure at one end thereof and used for driving the connecting plate 2 to move along the support frames 1. Namely, the end provided with the driving structure is the driving end, and the end not provided with the driving structure is the driven end. The driving structures may be disposed on both sides of the connecting plate 2, and the driving structures may be the sliding table 10, the air cylinder 11, or any other structures capable of providing linear movement, which is not limited specifically.

Two fixed units on the connecting plate 2 are respectively connected with the connecting plate 2 in a sliding manner along a second direction and are respectively provided with a driving structure. And the driving structure of one of the fixing units can be a sliding table 10, and the driving structure of the other fixing unit can be a cylinder 11; and is not particularly limited.

Further, two pressing plates 4 on the mounting plate 3 can be respectively connected with a pushing structure 5; the pushing structure 5 may be a cylinder 11, a lead screw nut, or the like, which is capable of providing linear movement, and is not limited in particular. The two pressing plates 4 on the mounting plate 3 can also be connected to a pushing structure 5; at this time, the pushing structure 5 may be an air claw or the like to drive the two pressing plates 4 to approach or depart from each other, and is not limited specifically.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A welding system is characterized by comprising a welding fixing tool and welding equipment; the welding and fixing tool comprises a fixing unit, the fixing unit comprises a mounting plate, a pressing plate and a pushing structure, the mounting plate is hoisted on a support assembly, the mounting plate is connected with the two pressing plates which are oppositely arranged in a sliding mode along a first direction, the pressing plate is connected with the pushing structure which is arranged along the first direction, and the pressing plate is provided with a positioning groove which is used for being matched with the position of a welding line; welding equipment locates the side of welded fastening frock, welding equipment includes displacement drive structure and welding head, welding head connect in the displacement drive structure.

2. The welding system of claim 1, wherein the carriage assembly is spaced apart to define two sets of opposing securing elements; the fixing unit is connected with the bracket component in a position adjustable mode along a second direction.

3. The welding system of claim 1, wherein the mounting plate defines a slot between the two pressure plates that extends through a bottom edge of the mounting plate.

4. The welding system of any of claims 1 to 3, wherein a pressure block is coupled to an inner side surface of the pressure plate on at least one side of the positioning slot; the pressing block is arranged along the length direction of the positioning groove, and the width of one side, connected with the pressing plate, of the pressing block is smaller than or equal to the width of one side, far away from the pressing plate, of the pressing block.

5. The welding system of any one of claims 1 to 3, wherein a shield is attached to an outer side surface of the pressure plate about the periphery of the positioning slot.

6. The welding system according to any one of claims 1 to 3, wherein the bracket assembly comprises two oppositely arranged support frames and a connecting plate, two ends of the connecting plate are correspondingly connected with the two support frames respectively, and the fixing unit is connected to the connecting plate; the end part of the connecting plate is connected with the corresponding support frame in an adjustable mode along a first direction.

7. The welding system of any one of claims 1 to 3, wherein the displacement drive mechanism is coupled to a mounting plate, the welding head is coupled to the mounting plate, and the mounting plate is further coupled to a dust extraction mechanism and a vision mechanism.

8. The welding system of claim 7, wherein the dust extraction structure comprises a dust hood that is positionally adjustable coupled to the fixed plate in a direction perpendicular to the fixed plate and in a direction parallel to the fixed plate, respectively.

9. The welding system of any of claims 1 to 3, wherein the displacement drive structure comprises a six-axis robot.

10. A method for welding a side plate of a module based on the welding system of any one of claims 1 to 9, comprising:

moving the module with the assembled side plates to the bracket assembly;

moving the fixing unit, and correspondingly pressing the pressing plate at the position of the welding seam;

and welding the welding positions in sequence by using welding equipment.