CN-122007624-A - Roll pressure roof beam battery package frame laser welding equipment

Abstract

The application relates to laser welding equipment for a roll-pressing beam battery pack frame, which relates to the technical field of laser welding of battery pack frames and comprises a machine base, a laser welding robot arranged on one side of the machine frame, a welding workbench arranged on the machine base, and a rotary table arranged on the machine base and used for rotating the welding workbench, wherein a laminating component used for stably laminating and tightly pressing a bottom frame and a cross beam and a suppression component used for suppressing deformation of a welding side of the cross beam are also arranged on the welding workbench, the whole machine base is rotatably arranged on the ground, and a rotary shaft of the machine base is perpendicular to a rotary shaft of the welding workbench. The application has the advantages of reducing the welding deformation in the welding process of the roller press beam frame, improving the welding quality of the battery pack frame and improving the assembly adaptation degree of the battery pack frame.

Inventors

• WU JIAO

Assignees

• 武汉东泰盛机械有限公司

Dates

Publication Date

20260512

Application Date

20260414

Claims (7)

1. 1. The laser welding equipment for the roll-to-beam battery pack frame is characterized by comprising a stand (1), a laser welding robot (2) arranged on one side of the stand, a welding workbench (6) arranged on the stand (1) and a rotary table (5) arranged on the stand (1) and used for rotating the welding workbench (6), wherein the welding workbench (6) is also provided with a laminating component (3) used for stably laminating and tightly abutting a bottom frame (13) and a cross beam (12) and a suppression component (4) used for suppressing deformation of the welding side of the cross beam (12), the stand (1) is integrally and rotatably arranged on the ground, and a rotating shaft of the stand (1) is perpendicular to a rotating shaft of the welding workbench (6); the attaching assembly (3) comprises a first abutting block (31) arranged on the welding workbench (6) and a second abutting block (32) arranged on the welding workbench (6), the second abutting block (32) is movably attached to one side, far away from the cross beam (12), of the bottom frame (13), the first abutting block (31) is movably attached to the side wall of the cross beam (12), and the welding workbench (6) is further provided with a first power part for rotationally driving the first abutting block (31) and a second power part (34) for slidably driving the second abutting block (32); The restraining assembly (4) comprises a beam deformation restraining piece (41) which is arranged corresponding to the first abutting block (31), a bottom frame deformation restraining piece (42) which is arranged corresponding to the second abutting block (32), and an adjusting piece (43) which uniformly adjusts the deformation restraining degree of the beam (12) and the deformation restraining degree of the bottom frame (13); The beam deformation inhibiting piece (41) comprises a first deformation inhibiting piece (411) which is arranged on the first abutting piece (31) in a relatively sliding manner, the first deformation inhibiting piece (411) is attached to the side wall of the beam (12), a first adsorption hole (412) is formed in the first deformation inhibiting piece (411), and a negative pressure piece which enables negative pressure to be generated in the first adsorption hole (412) is further arranged on the welding workbench (6); The bottom frame deformation restraining piece (42) comprises a second deformation restraining piece (421) which is arranged on the second abutting piece (32) in a relative sliding mode, a second adsorption hole (422) is formed in the second deformation restraining piece (421), negative pressure is generated in the second adsorption hole (422) towards the negative pressure piece at the same time, the adjusting piece (43) is used for adjusting the negative pressure in the first adsorption hole (412) and the second adsorption hole (422), and a driving piece (44) which is used for driving the first deformation restraining piece (411) and the second deformation restraining piece (421) in a sliding mode is further arranged on the welding workbench (6).
2. 2. A roll-to-roll beam battery pack frame laser welding apparatus as set forth in claim 1, wherein said suppression assembly (4) further comprises a lubrication member (45), said lubrication member (45) comprises a positive pressure member provided on said first deformation suppression block (411)/second deformation suppression block (421), said first deformation suppression block (411) being provided with fine lubrication holes (452) on an outer peripheral side of said first suction holes (412) and said second deformation suppression block (421) being provided with fine lubrication holes (452) on an outer peripheral side of said second suction holes (422), said lubrication holes (452) being uniformly distributed at intervals.
3. 3. The roll-to-roll beam battery pack frame laser welding equipment according to claim 2, wherein the negative pressure piece comprises a negative pressure air pump (46) arranged on the welding workbench (6), a first communicating pipe (461) used for enabling the negative pressure air pump (46) to be communicated with the first adsorption hole (412) and a second communicating pipe (462) used for enabling the negative pressure air pump (46) to be communicated with the second adsorption hole (422) are arranged on the welding workbench (6), the adjusting piece (43) comprises a first mounting block (431) arranged on the first deformation inhibiting block (411) and a second mounting block (432) arranged on the second deformation inhibiting block (421), the first communicating pipe (461) is arranged on the first mounting block (431), the second communicating pipe (462) is arranged on the second mounting block (432), a first adjusting block (433) is arranged on the first mounting block (431) in a sliding mode, and the second mounting block (432) is provided with a second communicating pipe (431) penetrating through the second adjusting block (433) in a sliding mode, and the second adjusting block (433) is arranged on the second mounting block (433) in a sliding mode, and the second communicating pipe (433) is provided with a large adjusting channel (434).
4. 4. A roll-to-beam battery pack frame laser welding device according to claim 3 is characterized in that a first support (311) is rotatably arranged on a welding workbench (6), a first abutting block (31) is rotatably arranged on the first support (311), an adjusting gear (47) is arranged at a rotating shaft of the first support (311), a first compression cavity (492) is arranged in the first support (311), an adjusting rack (48) is slidably arranged on the first support (311), the adjusting rack (48) is meshed with the adjusting gear (47), a first piston plate (49) is arranged in the first compression cavity (492), a second compression cavity (493) is further arranged on a first mounting block (431), the first compression cavity (492) is communicated with the second compression cavity (493), the first adjusting block (433) is arranged in the second peripheral wall (493), and the first piston plate (492) is attached to the first compression cavity (493).
5. 5. The laser welding apparatus for roll-to-beam battery pack frame as set forth in claim 4, wherein a third compression cavity (494) is provided in the second pressing block (32), a fourth compression cavity (495) is provided in the second mounting block (432), a second piston plate (491) is slidably provided in the third compression cavity (494), the third compression cavity (494) is in communication with the fourth compression cavity (495), the second piston plate (491) is in contact with an inner peripheral wall of the third compression cavity (494), and the second adjusting block (434) is in contact with an inner peripheral wall of the fourth compression cavity (495).
6. 6. The roll-to-roll beam battery pack frame laser welding apparatus as set forth in claim 5, wherein the driving member (44) comprises a fixing frame (441) disposed on the first abutting block (31)/the second abutting block (32), a fixing screw (442) is rotatably disposed on the fixing frame (441), both the first deformation inhibiting block (411)/the second deformation inhibiting block (421) are threadably disposed on the fixing screw (442), and a first power source (443) for rotationally driving the fixing screw (442) is further disposed on the fixing frame (441).
7. 7. The laser welding equipment for the roll-to-press beam battery pack frame is characterized in that an infrared sensor (7) and a controller (8) are arranged on the welding workbench (6), the controller (8) is electrically connected with the infrared sensor (7) and the first power source (443), when a welding robot moves to a welding area to weld the joint of the bottom frame (13) and the cross beam (12), the infrared sensor (7) measures the movement track of the welding joint and transmits signals to the controller (8), and the controller (8) controls the first power source (443) to move, so that the first deformation inhibiting block (411) and the second deformation inhibiting block (421) are always located on the welded side of the welding joint.

Description

Roll pressure roof beam battery package frame laser welding equipment Technical Field The application relates to the technical field of battery pack laser welding, in particular to a roll-to-press beam battery pack frame laser welding device. Background The new energy automobile is an important direction of future development of the automobile industry, and the endurance mileage is used as a key index for measuring the core performance of the electric automobile and is widely paid attention to the market and the industry. The dead weight of the automobile body is an important factor influencing the endurance mileage of the electric automobile, so that the structural strength of the automobile body and related parts is ensured while the weight of the automobile body is reduced, and the automobile is one of the development directions of the existing automobile industry. Common battery package frame includes crossbeam, boundary beam and underframe, through welded mode with boundary beam and boundary beam, crossbeam and underframe weld, in order to reduce the dead weight and promote battery package frame's intensity simultaneously, adopt roll pressure roof beam welded mode to weld, heat input is bigger when adopting CMT welding, lead to the roll pressure roof beam to produce uncontrollable welding heat altered shape easily in the welding process, and then influence battery package frame's dimensional accuracy, reduce the assembly suitability, and need extra filler wire when the welding, can additionally increase battery package frame's whole weight when increasing the cost. Therefore, some prior art adopts the laser welding mode to weld the roll-to-roll beam battery package, this kind of mode has reduced the heat input volume in the CMT welding process, has reduced partly welding deformation, and because roll-to-roll beam frame is cavity form, the cavity wall is very thin, especially welds and laser welding still can produce a part of heat, at the cooling process after welding, the middle part position of welding side still can be towards the cavity indent, and welding side both ends can produce the perk limit, so according to the old needs improvement. Disclosure of Invention In order to solve the problem of welding deformation in the welding process of the roll-pressing beam frame, the welding quality of the battery pack frame is improved, and accordingly the assembly adaptation degree of the battery pack frame is improved. The application provides a roll pressing beam battery pack frame laser welding device, which adopts the following technical scheme: The laser welding equipment comprises a machine base, a laser welding robot arranged on one side of the machine frame, a welding workbench arranged on the machine base, and a rotary table arranged on the machine base and used for rotating the welding workbench, wherein the welding workbench is also provided with a laminating component used for stably laminating and tightly supporting a bottom frame and a cross beam and a suppression component used for suppressing deformation of the welding side of the cross beam, the whole machine base is rotatably arranged on the ground, and a rotating shaft of the machine base is perpendicular to the rotating shaft of the welding workbench; The bonding assembly comprises a first abutting block arranged on the welding workbench and a second abutting block arranged on the welding workbench, the second abutting block is movably bonded with one side, far away from the cross beam, of the bottom frame, the first abutting block is movably bonded with the side wall of the cross beam, and the welding workbench is further provided with a first power piece for driving the first abutting block to rotate and a second power piece for driving the second abutting block to slide; The restraining component comprises a beam deformation restraining piece, a bottom frame deformation restraining piece and an adjusting piece, wherein the beam deformation restraining piece is arranged corresponding to the first abutting block, the bottom frame deformation restraining piece is arranged corresponding to the second abutting block, and the adjusting piece is used for uniformly adjusting the beam deformation degree and the bottom frame deformation restraining degree; The beam deformation restraining piece comprises a first deformation restraining piece which is arranged on the first abutting piece in a relatively sliding manner, the first deformation restraining piece is attached to the side wall of the beam, a first adsorption hole is formed in the first deformation restraining piece, and a negative pressure piece which enables negative pressure to be generated in the first adsorption hole is further arranged on the welding workbench; The bottom frame deformation restraining piece comprises a second deformation restraining piece which is arranged on the second abutting piece in a relative sliding mode, a second adsorption hole is formed in the second d