CN-121988869-A - New energy battery box cover plate laser welding equipment

Abstract

The invention aims to provide a new energy battery box cover plate laser welding device which comprises a machine table, a material pressing assembly and a welding mechanism, wherein a material loading device is rotatably arranged on the machine table, the material loading device is used for loading and driving a battery box body to rotate, the material pressing assembly comprises a material pressing driving piece, a material pressing frame, a rotating plate and a plurality of material pressing pieces, the material pressing frame is arranged on the machine table in a lifting mode, the material pressing driving piece is arranged on the machine table, the rotating plate is rotatably arranged on the material pressing frame, the material pressing pieces are arranged at the bottom of the rotating plate at intervals, the material pressing pieces comprise a material pressing seat, a pressing rod, a pressure sensor and a pressure elastic piece, the material pressing seat is arranged at the bottom of the material pressing frame, the pressing rod is slidably arranged in the material pressing seat, the pressure sensor is positioned between the pressure elastic piece and the pressing rod, the pressure elastic piece is used for pushing the pressure sensor so that the pressing rod is used for pressing a cover plate, the welding mechanism comprises a welding driving part and a laser, the welding driving part is arranged on the machine table, and the laser is arranged on the welding driving part.

Inventors

• ZENG WENSHENG
• GUO XIBIAO

Assignees

• 广东喜德利精密技术有限公司

Dates

Publication Date

20260508

Application Date

20260131

Claims (10)

1. 1. A new energy battery box cover plate laser welding device, comprising: The machine table is rotatably provided with a material carrying device which is used for carrying and driving the battery box body to rotate; The pressing assembly comprises a pressing driving piece, a pressing frame, a rotating plate and a plurality of pressing pieces, wherein the pressing frame is arranged on the machine table in a lifting mode, the pressing driving piece is arranged on the machine table, an output shaft of the pressing driving piece is connected with the pressing frame, the rotating plate is rotatably arranged on the pressing frame, the pressing pieces are arranged at intervals at the bottom of the rotating plate, the pressing pieces comprise pressing seats, pressing rods, pressure sensors and pressure elastic pieces, the pressing seats are arranged at the bottoms of the pressing frames, the pressing rods are arranged in the pressing seats in a sliding mode, the pressure elastic pieces and the pressure sensors are arranged in the pressing seats, the pressure sensors are arranged between the pressure elastic pieces and the pressing rods, the pressure elastic pieces are used for pushing the pressure sensors, so that detection ends of the pressure sensors push the pressing rods to extend out of the bottom ends of the pressing seats in a pressing mode, and the pressing rods are used for covering plates; The welding mechanism comprises a welding driving part and a laser, wherein the welding driving part is arranged on the machine table, the laser is arranged on the welding driving part, and the welding driving part is used for driving the laser to be close to or far away from the battery box body.
2. 2. The laser welding device for the cover plate of the new energy battery box according to claim 1, wherein the material pressing piece further comprises a top block, the top block is slidably arranged in the material pressing seat, the top block is located between the pressure elastic piece and the pressure sensor, so that the pressure elastic piece abuts against the top block, and the pressure sensor is arranged on the top block.
3. 3. The laser welding device for the cover plate of the new energy battery box according to claim 2, wherein the material pressing piece further comprises an inner pressing block and a pressure regulating nut, the inner pressing block is slidably arranged in the material pressing seat, one end, away from the top block, of the pressure elastic piece is abutted to the inner pressing block, the pressure regulating nut is in threaded connection with the outer side wall of the material pressing seat, the pressure regulating nut is abutted to the inner pressing block, and the pressure regulating nut is used for being stressed to rotate so as to drive the inner pressing block to compress or to be far away from the pressure elastic piece.
4. 4. The laser welding device for the cover plate of the new energy battery box according to claim 1, wherein the material pressing assembly further comprises a positioning frame, a lifting driving piece and a plurality of positioning pieces, the positioning frame is arranged at the bottom of the rotating plate in a lifting mode, a material avoiding hole is formed in the positioning frame, the lifting driving piece is arranged on the rotating plate, an output shaft of the lifting driving piece is connected with the positioning frame, the positioning pieces are distributed around the material avoiding hole in a surrounding mode, each positioning piece comprises a positioning cylinder and a positioning block, the positioning cylinder is arranged on the positioning frame, the positioning block is arranged on an output shaft of the positioning cylinder, and the positioning cylinder is used for driving the positioning block to push or be far away from the cover plate.
5. 5. The new energy battery box cover plate laser welding device of claim 1, wherein the material pressing assembly further comprises a first gear, a second gear and a follow-up driving piece, the first gear is arranged on the rotating plate, the follow-up driving piece is arranged on the material pressing frame, the second gear is arranged on an output shaft of the follow-up driving piece, and the second gear is meshed with the first gear.
6. 6. The laser welding device for the cover plate of the new energy battery box according to claim 5, wherein a rotating shaft is arranged on the rotating plate, a supporting seat is arranged on the pressing rack, the rotating shaft penetrates through the supporting seat, two pressing bearings are sleeved on the rotating shaft, the two pressing bearings are respectively located on two sides of the supporting seat along the axis of the rotating shaft, a lantern ring is arranged on the end portion of the rotating shaft and used for pushing the two pressing bearings to jointly clamp the supporting seat, and the first gear is arranged on the lantern ring.
7. 7. The laser welding device for the cover plate of the new energy battery box according to claim 1, wherein the material carrying device comprises a material carrying seat and a rotary driving piece, the material carrying seat is rotatably arranged on the machine table, the material carrying seat is used for carrying a box body, the rotary driving piece is arranged on the machine table, an output shaft of the rotary driving piece is connected with the material carrying seat, and the rotary driving piece is used for driving the material carrying seat to rotate.
8. 8. The laser welding device for the new energy battery box cover plate according to claim 7, wherein the material carrying device further comprises a position avoidance driving piece, a sliding block, a first driving piece, a first clamping block, a second driving piece and a second clamping block, the position avoidance driving piece is arranged on one side surface of the material carrying seat, the sliding block is arranged on an output shaft of the position avoidance driving piece, the position avoidance driving piece is used for driving the sliding block to lift and slide, the first driving piece and the second driving piece are both arranged on the sliding block, the first clamping block is arranged on an output shaft of the first driving piece, the first driving piece is used for driving the first clamping block to be close to the material carrying seat so that the first clamping block compresses the box body, the second clamping block is arranged on an output shaft of the second driving piece, and the second driving piece is used for driving one side surface of the second clamping block to push the box body.
9. 9. The new energy battery box cover plate laser welding device according to claim 1, further comprising a material moving mechanism, a material loading mechanism and a material unloading mechanism, wherein the material loading mechanism and the material unloading mechanism are respectively connected and arranged on two opposite sides of the machine table, the material moving mechanism is arranged on the machine table, the material moving mechanism is positioned on one side of the material loading device far away from the welding mechanism, and the material moving mechanism is respectively arranged adjacent to the material loading mechanism, the material loading device and the material unloading mechanism.
10. 10. The laser welding device for the cover plate of the new energy battery box according to claim 9, wherein the material moving mechanism comprises a transverse moving module, a material moving driving part and a material clamp, the transverse moving module is arranged on the machine table, the material moving driving part is arranged on an output shaft of the transverse moving module, the transverse moving module is used for driving the material moving driving part to sequentially pass through the feeding mechanism, the material loading device and the material discharging mechanism, the material clamp is arranged on the output shaft of the material moving driving part, the material moving driving part is used for driving the material clamp to be close to or far away from the feeding mechanism/the material loading device/the material discharging mechanism, and the material clamp is used for clamping the box body.

Description

New energy battery box cover plate laser welding equipment Technical Field The invention relates to the technical field of battery welding, in particular to a new energy battery box cover plate laser welding device. Background The welding of the battery box cover plate is a key process for sealing and protecting the battery structure, and the key aim is to achieve airtight/watertight sealing of the cover plate and the box body, ensure that the structural strength reaches the standard, and simultaneously avoid the welding heat from affecting and damaging the internal battery module. For example, chinese patent publication No. CN105965160a discloses a battery cover plate welding apparatus, which discloses that, when a material is supplied by an automatic carrier outside a workbench, if a first tray is full, the first mechanical arm grabs the batteries to a battery pushing mechanism one by one, and pushes the batteries to a press-fitting mechanism for press-fitting, after the press-fitting is completed, the contour scanning of the batteries is performed, if a defective product is found, the product is grabbed to a third tray for output, otherwise, the batteries are continuously transported to a positioning mechanism for positioning, and the battery seal is welded by a welding mechanism. And discharging through a second assembly line and a third assembly line after welding. Therefore, the existing battery cover plate welding equipment has the specific operation that after the cover plate and the box body are correctly pressed by using the pressing mechanism, the contour scanning of the battery is carried out by using an industrial camera, then the box body (with the cover plate) is accurately positioned below the welding mechanism by using the positioning mechanism, and finally the cover plate and the box body are welded and fixed by the welding mechanism. As can be seen from fig. 1, in the conventional battery cover plate welding apparatus, a battery with a built-in upper welding structure of a step groove is welded and fixed, specifically, a step groove 21a is formed at the top opening of a box body 21, and a cover plate 22 is adaptively embedded in the step groove 21a, so that the surface of the cover plate 22 is flush with the top surface of the box body 21, and a welding seam 23 formed by welding the cover plate 22 and the box body 21 is located on the top surface of the battery, so that the welding mechanism can weld and fix the cover plate 22 and the box body 21 by rotating a circle along a horizontal plane above. However, in order to ensure precise welding between the cover plate 22 and the box body 21, in actual production, a step groove 21a needs to be formed by precisely machining at the top opening of the box body 21, and since the step groove 21a is an embedded groove structure, machining by using a CNC precise machine tool is required at present, so that the machining cost of the box body 21 is too high, and the weld maintenance difficulty is high. In order to reduce the production cost, a step-free groove external side welding structure as shown in fig. 2 is provided, specifically, a welding seam 24 between the cover plate 22 and the box body 21 is located at the joint position of the outer side wall, and compared with the step-free groove external side welding structure in the step-free groove internal type upper welding mode, the step-free groove external side welding structure has the advantages that the box body 21 is simple in processing structure, machining by using a CNC precision machine tool is not needed, the cost is low, the welding seam is exposed, the repair rate is relatively low, the design of the cover plate is more flexible, for example, the thickness design of the cover plate can be moderately reduced, and the light weight advantage is obvious. However, since the battery welding apparatus on the market at present mainly welds the battery cover plate of the first type of step-groove built-in type upper welding structure, and the battery case 21 of the second type of step-groove-free type outer covering type side welding structure is generally square, manual welding is often used to weld the peripheral walls of the case 21 and the cover plate 22, so that the efficiency is too low, the welding quality is transitionally dependent on the proficiency of workers, and the welding quality is difficult to be constant. Therefore, in order to solve the above problems, a new energy battery box cover plate laser welding apparatus of the present application is proposed. Disclosure of Invention The invention aims to overcome the defects in the prior art and provides a new energy battery box cover plate laser welding device for automatically welding a battery box body and the peripheral wall of a cover plate so as to improve the welding efficiency and the welding quality. The aim of the invention is realized by the following technical scheme: A new energy battery box cover plate laser welding de