CN215545807U - Welding device and welding system - Google Patents

Abstract

The utility model relates to the technical field of power battery manufacturing, and discloses a welding device and a welding system. The welding device comprises a laser generator, an adapter and a welding pressure head. The adapter is provided with a first channel, and one end of the adapter is connected with the laser generator. The welding pressure head is provided with a second channel, the welding pressure head is connected to the other end of the adapter, the welding pressure head and the laser generator are arranged at intervals, the end face of one end, away from the laser generator, of the welding pressure head is convexly provided with a plurality of pressing parts, and the pressing parts are arranged at intervals along the circumferential direction; the laser that laser generator jetted out can pass first passageway and second passageway in proper order. The utility model reduces the possibility of welding slag burning the laser generator, reduces the maintenance cost, and can also discharge the gas in the welding pressure head, thereby ensuring the welding effect.

Description

Welding device and welding system

Technical Field

The utility model relates to the technical field of power battery manufacturing, in particular to a welding device and a welding system.

Background

At present, new energy automobiles are increasingly popularized, power batteries are used as core components of electric automobiles, and the improvement of production processes, standardization and production yield improvement are also increasingly paid attention by battery enterprises and automobile enterprises. In order to standardize the module size, a VDA module, namely a standard module concept, is introduced in the industry, and has a fixed size, so that great convenience is brought to the design of a battery pack in the industry, and industrial automatic production is facilitated.

Along with the gradual promotion of the popularization rate of the laser welding process technology in the production and manufacturing process of power batteries, the laser welding mode gradually becomes an important production method in the welding production process of the VDA module voltage temperature sensing acquisition line, and particularly, the acquisition line is connected with the bus bar of the battery module in the laser welding mode. Generally, a pressure nozzle is arranged on a laser welding device, the pressure nozzle can tightly press an acquisition line on a bus bar, and laser emitted by a laser generator can pass through a channel formed in the pressure nozzle to reach the acquisition line for welding.

At present, a pressure nozzle of laser welding equipment is directly connected to a laser emitter, and high-temperature welding slag generated during welding splashes out through a channel of the pressure nozzle to burn a lens of a laser generator, so that the maintenance cost is increased. In addition, the design of the welding pressure head does not consider air leakage, so that a large amount of gas cannot be discharged in time during welding, the welding heat cannot be effectively released, and poor welding occurs; when laser welding, the inside gas of passageway of seting up on the pressure nozzle is heated, and gas expansion, the increase in volume, the gas that is heated can't in time be discharged, has increased the risk of damaging the pressure nozzle, leads to the welding department circulation of air relatively poor moreover, can't effectively cool off, has influenced the welding effect.

In view of the above, there is a need for a welding device and a welding system to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a welding device and a welding system, which reduce the possibility of welding slag burning a laser generator, reduce the maintenance cost, and can also discharge gas in a welding pressure head to ensure the welding effect.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a welding device, comprising:

a laser generator;

the adapter is provided with a first channel, and one end of the adapter is connected with the laser generator;

the welding pressure head is provided with a second channel and connected to the other end of the adaptor, the welding pressure head and the laser generator are arranged at intervals, the end face of one end, away from the laser generator, of the welding pressure head is provided with a plurality of pressing parts in a protruding mode, and the pressing parts are arranged at intervals along the circumferential direction;

the laser emitted by the laser generator can sequentially pass through the first channel and the second channel.

Preferably, the adaptor includes first adaptor plate and second adaptor plate, first adaptor plate with laser generator is connected and offers first passageway, first adaptor plate connect in the one end of second adaptor plate, the welding pressure head connect in the other end of second adaptor plate.

Preferably, the adapter further comprises a baffle, the baffle is connected to the end face of the first adapter plate far away from the laser generator, and the baffle extends towards the direction far away from the laser generator.

Preferably, a reinforcing rib is connected between the first adapter plate and the baffle plate.

Preferably, the welding pressure head includes pressure mouth and L template, the L template includes first curb plate and the second curb plate of perpendicular connection, first curb plate connect in the pressure mouth orientation laser generator's one end, just the second passageway runs through first curb plate with the pressure mouth, the second curb plate laminating and connect in the second keysets, the pressure mouth is kept away from the terminal surface protrusion of the one end of first curb plate sets up the portion that compresses tightly.

Preferably, the welding device further comprises an elastic assembly, the elastic assembly comprises an elastic piece and a guide rod, two ends of the guide rod are respectively connected with the pressure nozzle and the first side plate, the elastic piece is sleeved on the guide rod, and two ends of the elastic piece are respectively abutted against the pressure nozzle and the first side plate.

Preferably, the welding device further comprises a mechanical arm, and one end of the laser generator, which is far away from the adapter, is connected to the movable end of the mechanical arm.

A welding system comprises a clamp for clamping a battery module and the welding device.

Preferably, the clamp comprises a clamping jaw, the clamping jaw can clamp or loosen the battery module, and an insulating pad is arranged on the inner side of the clamping jaw.

Preferably, the welding system further comprises a placing table, and the placing table is provided with a limiting groove for placing the battery module.

The utility model has the beneficial effects that: the welding device comprises the adapter and the welding pressure head, one end of the adapter is connected with the laser generator, the other end of the adapter is connected with the welding pressure head, compared with a structure that the welding pressure head in the prior art is directly connected to the laser generator, the laser generator and the welding pressure head are arranged at intervals by utilizing the adapter, when laser welding is carried out, welding slag can contact with a lens of the laser generator only by sequentially passing through the second channel and the first channel, the possibility that the laser generator is burnt by the welding slag is reduced, and the maintenance cost is reduced; and in the process that the welding slag passes through the interval between the laser generator and the welding pressure head, the temperature of the welding slag is reduced, and the laser generator is further prevented from being burnt by the welding slag. In addition, utilize the adaptor to be connected laser generator and welding pressure head, guaranteed that the relative position between laser generator and the welding pressure head can be fixed to it can pass in proper order to have guaranteed that laser generator's laser first passageway with the second passageway reachs the acquisition line. The welding pressure head sets up a plurality of portions that compress tightly at the one end interval of keeping away from laser generator, and two adjacent portions that compress tightly can form the passageway of ventilating between the portion, and the inside gas of second passageway can be followed the passageway of ventilating and discharged, has also guaranteed the circulation of air of splice, avoids the higher welding effect that influences of temperature, has guaranteed the product percent of pass, has avoided the gas damage welding pressure head of inflation, has further reduced the maintenance cost.

Drawings

FIG. 1 is a schematic structural diagram of a welding apparatus provided in an embodiment of the present invention;

FIG. 2 is a schematic structural view of an adapter and a welding ram provided by an embodiment of the present invention;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a schematic structural diagram of a pressure nozzle provided by an embodiment of the utility model;

FIG. 5 is a schematic structural diagram of a welding system provided by an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a schematic diagram of a jaw configuration provided by an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a placing table according to an embodiment of the present invention.

In the figure:

1. a laser generator;

2. an adapter; 21. a first transfer plate; 22. a second adapter plate; 23. a baffle plate; 24. reinforcing ribs;

3. welding a pressure head; 31. pressing a nozzle; 311. a pressing part; 312. flanging; 32. an L-shaped plate; 321. a first side plate; 322. a second side plate;

4. an elastic component; 41. an elastic member; 42. a guide bar;

5. a mechanical arm; 61. a first channel; 62. a second channel;

10. a battery module; 101. a bus bar; 102 collecting lines; 20. a clamp; 201. a clamping jaw; 202. an elastic pad; 30. a placing table; 301. a limiting groove; 302. and connecting the holes.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

The present embodiment provides a welding apparatus. Specifically, as shown in fig. 1 to 8, the welding device includes a laser generator 1, an adapter 2, and a welding ram 3. The adapter 2 is provided with a first channel 61, and one end of the adapter 2 is connected with the laser generator 1; the welding pressure head 3 is provided with a second channel 62, the welding pressure head 3 is connected to the other end of the adapter 2, the welding pressure head 3 and the laser generator 1 are arranged at intervals, the end face of one end, away from the laser generator 1, of the welding pressure head 3 is convexly provided with a pressing part 311, and the pressing parts 311 are arranged in a plurality at intervals along the circumferential direction of the welding pressure head 3; the laser light generated by the laser generator 1 can pass through the first passage 61 and the second passage 62 in this order.

This welding set includes adaptor 2 and welding pressure head 3, adaptor 2's one end is connected with laser generator 1, adaptor 2's the other end is connected with welding pressure head 3, compare the structure of 3 lug connection in laser generator 1 of welding pressure head among the prior art, utilize adaptor 2 to realize laser generator 1 and 3 intervals settings of welding pressure head, when carrying out laser welding, the welding slag need loop through second passageway 62 and first passageway 61 just can contact laser generator 1's camera lens, the possibility that the welding slag burns laser generator 1 has been reduced, the maintenance cost is reduced, and the welding slag passes the spaced in-process between laser generator 1 and the welding pressure head 3, the temperature of welding slag descends, further avoided the welding slag to burn laser generator 1. In addition, the laser generator 1 and the welding head 3 are connected by the adapter 2, so that the relative position between the laser generator 1 and the welding head 3 can be fixed, and the laser of the laser generator 1 can sequentially pass through the first channel 61 and the second channel 62 to reach the acquisition line 102. Welding pressure head 3 sets up a plurality of portions 311 that compress tightly at the one end interval of keeping away from laser generator 1, and two adjacent portions 311 that compress tightly can form the passageway of ventilating between, and the inside gas of second passageway 62 can be followed the passageway of ventilating and discharged, has also guaranteed the circulation of air of welding department, avoids the higher influence welding effect of temperature, has guaranteed the product percent of pass, has avoided expanding gas damage welding pressure head 3, has further reduced the maintenance cost.

Further, the adapter 2 comprises a first adapter plate 21 and a second adapter plate 22, the first adapter plate 21 is connected with the laser generator 1 and opens a first channel 61, the first adapter plate 21 is connected to one end of the second adapter plate 22, and the welding head 3 is connected to the other end of the second adapter plate 22. Set up first keysets 21 and realized that adaptor 2 is connected with laser generator 1, set up second keysets 22, the welding slag is from the second passageway 62 spill on the welding pressure head 3, sets up second keysets 22 and has played the effect of sheltering from the welding slag, avoids the higher welding slag of temperature to scald laser generator 1 or personnel, has improved the security, has also reduced the cost of plant maintenance.

In the present embodiment, the first adaptor plate 21 and the second adaptor plate 22 are vertically connected, so that the adaptor 2 is L-shaped. Furthermore, the first adapter plate 21 is hexagonal, the second adapter plate 22 is rectangular, and the second adapter plate 22 is arranged on one of the straight edges of the first adapter plate 21. In order to avoid the welding slag from causing the adaptor 2 to be burnt, the first adaptor plate 21 and the second adaptor plate 22 are made of metal materials, and the first adaptor plate 21 and the second adaptor plate 22 are of an integrated structure. In other embodiments, the angle formed between the first adapter plate 21 and the second adapter plate 22 and the shapes of the first adapter plate 21 and the second adapter plate 22 can be adjusted, and the first adapter plate 21 and the second adapter plate 22 can be detachably connected by a welded connection or a bolt, which is not limited herein.

In the present embodiment, the lens of the laser generator 1 is disposed downward, and the laser generator 1 emits laser light vertically downward. The first channel 61 and the second channel 62 are both vertically disposed. The welding ram 3 is arranged below the adapter 2. The cross-section of the first channel 61 is circular and as small as possible, ensuring that only the lens of the laser generator 1 is exposed from the first channel 61. First keysets 21 level setting, the vertical setting of second keysets 22, and seted up four through-holes on the first keysets 21, the axis and the first passageway 61 parallel arrangement of four through-holes, first keysets 21 passes through the screw and can dismantle with laser generator 1 and be connected, specifically passes the through-hole and with laser generator 1 spiro union for the screw.

Preferably, the adaptor 2 further comprises a baffle 23. The baffle 23 is connected to the end surface of the first adapter plate 21 away from the laser generator 1, and the baffle 23 extends in a direction away from the laser generator 1. When carrying out laser welding, the welding slag has further played the effect of sheltering from the welding slag from the 62 spills of second passageway on the welding pressure head 3, sets up baffle 23, avoids the higher welding slag of temperature to scald laser generator 1 or personnel, has improved the security, has also reduced the cost of plant maintenance.

In order to avoid the welding slag to cause the baffle 23 to be burnt, the baffle 23 is made of metal, and the first adapter plate 21 and the baffle 23 are integrally connected. In this embodiment, two baffles 23 are provided, two baffles 23 are respectively provided at two sides of the second adapter plate 22, two baffles 23 are respectively provided at two straight edges of the first adapter plate 21 adjacent to two sides of the second adapter plate 22, and the baffles 23 are respectively connected to the side walls at two sides of the second adapter plate 22. And the length of the baffle 23 is less than the length of the second adapter plate 22. In other embodiments, the relationship between the length of the baffle 23 and the length of the second adapter plate 22 can be adaptively adjusted, and is not limited herein.

Furthermore, a reinforcing rib 24 is connected between the first adapter plate 21 and the baffle plate 23, and the reinforcing rib 24 is arranged, so that the structural strength of the adapter 2 is improved, the durability of the welding device is improved, and the service life is prolonged. In the present embodiment, the reinforcing rib 24 is a rectangular plate and is vertically disposed, and two adjacent side edges are respectively connected to the first adapter plate 21 and the baffle 23. The reinforcing ribs 24 may be connected to the first adapter plate 21 and the baffle 23 by welding, or may be a one-piece structure, which is not limited herein. In the present embodiment, the first adaptor plate 21, the second adaptor plate 22 and the baffle plate 23 of the adaptor 2 are made of wear-resistant and heat-resistant brass.

In this embodiment, welding pressure head 3 includes pressure nozzle 31 and L template 32, L template 32 includes perpendicular first curb plate 321 and the second curb plate 322 of connecting, first curb plate 321 is connected in the one end of pressure nozzle 31 towards laser generator 1, and second passageway 62 runs through first curb plate 321 and pressure nozzle 31, second curb plate 322 pastes and connects in second adaptor plate 22, use L template 32 to be connected pressure nozzle 31 and adaptor 2, under the prerequisite of the interval setting between guaranteeing laser generator 1 and the pressure nozzle 31, connection structure has been simplified.

Specifically, the first side plate 321 on the L-shaped plate 32 is horizontally disposed, and the second side plate 322 is vertically disposed. First curb plate 321 is fixed in the bottom of second curb plate 322, has further lengthened the distance between pressure mouth 31 and the laser generator 1, and the welding slag of spill also possess sufficient space and cool off, has further guaranteed the security, has also avoided laser generator 1's camera lens to be burnt by the welding slag, has also guaranteed the structural compactness of welding pressure head 3. Specifically, the second side plate 322 is detachably connected with the second adapter plate 22 through a flower-shaped flange bolt, so that the L-shaped plate 32 and the pressure nozzle 31 can be conveniently replaced, and the practicability and the convenience in detachment are improved. In other embodiments, the second side plate 322 may be connected to the second adapter plate 22 by welding or the like.

Preferably, the pressing portion 311 protrudes from an end surface of one end of the pressing nozzle 31 away from the first side plate 321, and the pressing portion 311 is provided in plurality at intervals along the circumferential direction. Set up a plurality of portions 311 that compress tightly, can guarantee at least one portion 311 and the butt of gathering line 102 of compressing tightly at every turn, be convenient for pressure mouth 31 compresses tightly on gathering line 102 from a plurality of directions, improved the practicality. In the present embodiment, the pressing portion 311 is a rectangular parallelepiped, and the surface of the pressing portion 311 that is in contact with the collecting line 102 is a plane, so that the pressing portion 311 can press the collecting line 102 against the bus bar 101 of the battery module 10.

In the present embodiment, in order to facilitate the connection between the pressure nozzle 31 and the first side plate 321, a flange 312 is provided on the pressure nozzle 31, and the flange 312 extends horizontally toward the outside of the pressure nozzle 31. Specifically, the pressure nozzle 31 is in the shape of an inverted cone, and has a ring shape with a rectangular cross section. The bead 312 is annularly arranged along the circumference of the pressure nozzle 31.

In the present embodiment, four pressing portions 311 are provided, and the cross section of the pressure nozzle 31 is rectangular ring-shaped, so that the end surface of the pressure nozzle 31 away from the first side plate 321 is also rectangular ring-shaped, and each straight edge is correspondingly provided with one pressing portion 311.

In the laser welding process, it is required to ensure that welding surfaces are compressed and contacted well, in the existing battery module 10, in the laser welding process, because the bus bar 101 is welded on a battery tab, and the contact surface between the bent battery tab and the bus bar 101 is in an inclined state, the bus bar 101 is also inclined, when the collecting line 102 is pressed on the bus bar 101 by using the welding pressure head 3, the pressing force applied by the welding pressure head 3 on the collecting line 102 is not uniform, the battery module 10 and the pressure nozzle 31 are easily damaged due to too large pressing force, and if the pressing force is too small, the collecting line 102 cannot be firmly compressed, so that the phenomena of cold joint and explosive welding are caused. Preferably, welding set still includes elastic component 4, elastic component 4 includes elastic component 41 and guide arm 42, the both ends of guide arm 42 are connected with pressure mouth 31 and first curb plate 321 respectively, elastic component 41 overlaps locates on the guide arm 42, and the both ends of elastic component 41 butt respectively in pressure mouth 31 and first curb plate 321, set up elastic component 4, be convenient for press mouth 31 and gather the laminating that can be better between the line 102, be favorable to welding pressure mouth 31 on the pressure head 3 to exerting even packing force to gathering the line 102, avoid crushing battery module 10 or pressure mouth 31, the rosin joint has also been avoided, the problem of deep-fried welding takes place.

In this embodiment, two ends of the guide rod 42 penetrate through the flange 312 and the first side plate 321, and two ends of the guide rod 42 are provided with external threads, the external threads at the two ends are screwed with the nuts, so that the pressure nozzle 31 and the first side plate 321 are limited on the guide rod 42, and two ends of the elastic element 41 abut against the pressure nozzle 31 and the first side plate 321, so that the pressure nozzle 31 applies uniform pressing force to the collecting line 102. The flange 312 has a first abutting groove, the first side plate 321 has a second abutting groove, and two ends of the elastic element 41 abut against the first abutting groove and the second abutting groove respectively. The first abutting groove is annular and is arranged coaxially with the guide rod 42. The second abutting groove is annular and is arranged coaxially with the guide rod 42. The elastic members 4 are provided in plural sets, preferably four sets, and four sets of elastic members 4 are arranged at intervals along the circumferential direction of the flange 312.

Preferably, the welding device further comprises a robot arm 5. Laser generator 1 keeps away from the one end of adaptor 2 and connects in the expansion end of arm 5, be convenient for remove laser generator 1 according to the welding position on the battery module 10, the convenience of degree of automation and operation has been improved, artifical fixed-position welding position has been avoided, thereby the influence of human factor to the precision of welding position on the battery module 10 has been avoided, the accuracy has been improved, the stable connection between collection line 102 or other structures and busbar 101 has been guaranteed, the qualification rate of battery module 10 has been guaranteed. The movable end of the mechanical arm 51 can move with six degrees of freedom, and the structure thereof can adopt the prior art, which is not described herein again.

The present embodiments also provide a welding system. As shown in fig. 5 to 8, the welding system includes the jig 20 for holding the battery module 10 and the welding device as described above. When carrying out laser welding, fix battery module 10 on anchor clamps 20, need not artifical location and fixed battery module 10, improved the security when welding, also reduced the cost of labor.

Specifically, the clamp 20 includes clamping jaws 201, and the clamping jaws 201 can clamp or loosen the battery module 10. Further, the inside of the clamping jaw 201 is provided with the insulating pad 202, and when the clamping jaw 201 clamps the battery module 10, the insulating pad 202 can be arranged between the clamping jaw 201 and the battery module 10, so that the short circuit of the battery module 10 in the welding process can be avoided, and the safety is ensured. In this embodiment, the insulating pad 202 is made of rubber, and has a soft texture, so that the battery module 10 can be prevented from being scratched, and the yield of the battery module 10 is ensured. The structure of the clamping jaw 201 may adopt the prior art, and is not described in detail herein.

In this embodiment, the clamp 20 may further include a moving unit for driving the clamping jaw 201 to move. After the clamping jaw 201 clamps the battery module 10, when the battery module 10 deviates from the preset position, in order to ensure the accuracy of the welding position, the moving unit can drive the clamping jaw 201 to move the battery module 10 to the preset position, so as to avoid welding deviation. The moving unit can realize the movement of the clamping jaw 201 through the driving of an air cylinder or a linear electric appliance. And three air cylinders or linear motors with mutually vertical moving directions of output ends can be arranged and connected with the clamping jaw 201, so that the six-degree-of-freedom movement of the clamping jaw 201 is realized. The structure of the mobile unit can be implemented by the prior art, and is not described herein again.

Preferably, the welding system further comprises a placement table 30. The table top is made of bakelite phenolic plastic with the characteristics of insulation, wear resistance, heat resistance, corrosion resistance and the like. The top of the placing table 30 is provided with a limit groove 301, and the bottom of the battery module 10 can be embedded in the limit groove 301. Because the bottom surface of welded battery module 10 is uneven in this embodiment, sets up spacing groove 301, has avoided battery module 10 to empty, does not need operating personnel to right, has guaranteed welding efficiency, has saved the time cost, has also improved the security.

The placing table 30 is further provided with a connecting hole 302 which can be connected with the base of the clamp 20 through a bolt, so that convenience in assembling is improved, positioning of the clamp 20 is facilitated, and welding precision is guaranteed.

For ease of understanding, the process of the welding system when welding the collection wire 102 to the battery module is described in detail below. First, the battery module 10 is placed in the limiting groove 301 to be pre-fixed, and the end face of the battery module 10 for welding with the voltage and temperature sensing collection line 102 is placed upward. Next, the clamping jaws 201 clamp the battery module 10 and adjust the battery module 10 to a predetermined position by the moving unit. Then, the robot arm 5 moves the laser generator 1, the adaptor 2, and the welding ram 3, and presses the collection wire 102 against the battery module 10 using the pressing portion 311 of the pressing nozzle 31. Finally, the laser generator 1 emits laser light to weld the collecting line 102 and the bus bar 101 of the battery module 10 together through the first and second passages 61 and 62.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A welding device, comprising:

a laser generator (1);

the adapter (2) is provided with a first channel (61), and one end of the adapter (2) is connected with the laser generator (1);

the welding pressure head (3) is provided with a second channel (62), the welding pressure head (3) is connected to the other end of the adapter (2), the welding pressure head (3) and the laser generator (1) are arranged at intervals, a pressing part (311) is convexly arranged on the end face of one end, away from the laser generator (1), of the welding pressure head (3), and a plurality of pressing parts (311) are arranged at intervals along the circumferential direction;

the laser emitted by the laser generator (1) can sequentially pass through the first channel (61) and the second channel (62).

2. Welding device according to claim 1, wherein said adapter (2) comprises a first adapter plate (21) and a second adapter plate (22), said first adapter plate (21) being connected to said laser generator (1) and opening said first channel (61), said first adapter plate (21) being connected to one end of said second adapter plate (22), said welding head (3) being connected to the other end of said second adapter plate (22).

3. Welding device according to claim 2, wherein the adapter (2) further comprises a baffle (23), wherein the baffle (23) is connected to an end face of the first adapter plate (21) facing away from the laser generator (1), and wherein the baffle (23) extends in a direction facing away from the laser generator (1).

4. Welding device according to claim 3, characterized in that between said first adapter plate (21) and said baffle plate (23) reinforcing ribs (24) are connected.

5. The welding device according to claim 2, characterized in that the welding head (3) comprises a pressure nozzle (31) and an L-shaped plate (32), the L-shaped plate (32) comprises a first side plate (321) and a second side plate (322) which are vertically connected, the first side plate (321) is connected to one end of the pressure nozzle (31) facing the laser generator (1), the second channel (62) penetrates through the first side plate (321) and the pressure nozzle (31), the second side plate (322) is attached to and connected to the second adapter plate (22), and an end face of one end, away from the first side plate (321), of the pressure nozzle (31) protrudes to form the pressing portion (311).

6. The welding device according to claim 5, further comprising an elastic component (4), wherein the elastic component (4) comprises an elastic member (41) and a guide rod (42), two ends of the guide rod (42) are respectively connected with the pressure nozzle (31) and the first side plate (321), the elastic member (41) is sleeved on the guide rod (42), and two ends of the elastic member (41) are respectively abutted against the pressure nozzle (31) and the first side plate (321).

7. Welding device according to claim 1, further comprising a robot arm (5), wherein the end of the laser generator (1) remote from the adapter (2) is connected to a movable end of the robot arm (5).

8. Welding system, characterized in that it comprises a clamp (20) for clamping a battery module (10) and a welding device according to any one of claims 1-7.

9. Welding system according to claim 8, characterized in that the clamp (20) comprises clamping jaws (201), the clamping jaws (201) being capable of clamping or releasing the battery module (10), the clamping jaws (201) being provided on their inner side with an insulating pad (202).

10. The welding system according to claim 9, further comprising a placing table (30), wherein the placing table (30) is provided with a limiting groove (301) for placing the battery module (10).

Images