CN-121972788-A - Welding device and welding equipment

Abstract

The invention provides a welding device and welding equipment, wherein the welding device comprises a reinforcing sheet supply unit, a reinforcing sheet bearing unit, a pole piece supporting unit, a welding unit and a pole lug supply unit, wherein the reinforcing sheet supply unit is positioned at one side of the reinforcing sheet bearing unit in the length direction, the welding unit and the pole lug supply unit are positioned above the pole piece supporting unit, the pole piece supporting unit is positioned above the reinforcing sheet bearing unit, and the reinforcing sheet bearing unit is movable along the length direction. According to the welding device, through the synergistic effect of the reinforcing sheet supply unit and the reinforcing sheet receiving unit, the reinforcing sheet can be provided to the lower side of the pole piece before the pole lug is welded with the pole piece, and the welding unit can weld the reinforcing sheet, the pole piece and the pole lug together to form a three-layer composite structure, so that the structural strength of the welding part of the pole piece and the pole lug can be remarkably improved, the risk of falling off or breakage of the pole lug is reduced, and the fault of the battery core is further caused.

Inventors

• Request for anonymity
• Request for anonymity

Assignees

• 无锡先导智能装备股份有限公司

Dates

Publication Date

20260505

Application Date

20260106

Claims (13)

1. 1. The welding device is characterized by comprising a reinforcing sheet supply unit, a reinforcing sheet bearing unit, a pole piece supporting unit, a welding unit and a pole lug supply unit; the reinforcing sheet supply unit is positioned at one side of the reinforcing sheet receiving unit in the length direction, the welding unit and the tab supply unit are positioned above the pole piece support unit, the pole piece support unit is positioned above the reinforcing sheet receiving unit, and the reinforcing sheet receiving unit is movable along the length direction.
2. 2. The welding device of claim 1, further comprising: the reinforcing sheet receiving unit is movably arranged on the base along the length direction of the base; the driving piece is arranged on the base, and the output end of the driving piece is connected with the reinforcing sheet bearing unit.
3. 3. The welding device according to claim 1, wherein the reinforcing sheet receiving unit is provided with an adsorption hole on an upper side thereof.
4. 4. A welding apparatus according to claim 3, wherein the reinforcing sheet receiving unit is provided with a boss and a dust suction hole on an upper side thereof, the suction hole being provided in the boss, and the dust suction hole being provided in an outer peripheral region of the boss.
5. 5. The welding device of claim 4, further comprising: The dust collection pipe is configured into an elastic telescopic pipe, and one end of the dust collection pipe is arranged on the reinforcing sheet bearing unit and communicated with the dust collection hole.
6. 6. A welding apparatus according to claim 3, wherein the reinforcing sheet supply unit includes: the reinforcing strip feeding mechanism and the cutter mechanism are positioned between the reinforcing strip feeding mechanism and the reinforcing strip bearing unit.
7. 7. A welding device as defined in claim 3, wherein the welding unit is an ultrasonic welding unit, the welding device further comprising: and the ultrasonic welding unit is arranged on the first lifting mechanism.
8. 8. The welding device according to claim 7, wherein a welding boss is provided on the lower side of the ultrasonic welding unit, and the welding boss is offset from the suction hole.
9. 9. The welding apparatus according to claim 1, wherein the reinforcing sheet receiving unit or the pole piece supporting unit is liftable.
10. 10. The welding device of claim 1, further comprising a second lifting mechanism, the pole piece support unit comprising: The connecting seat and two parallel arrangement's rotation support piece, the connecting seat is located second elevating system, rotation support piece is located around its axis rotationally the connecting seat, the reinforcement piece accepts the unit can stretch into two rotation support piece between in order to support the pole piece.
11. 11. The welding device of claim 10, wherein the rotational support is configured as a support roller or a support shaft.
12. 12. The welding device as defined in claim 10, wherein the direction of movement of the reinforcement piece receiving unit is the same as the axial direction of the rotating support member.
13. 13. A welding apparatus comprising a welding device according to any one of claims 1-12.

Description

Welding device and welding equipment Technical Field The invention relates to the technical field of battery production, in particular to a welding device and welding equipment. Background In battery production, welding of the pole piece and the pole lug is a key procedure. The existing welding device adopts a mode of directly welding the tab and the pole piece, has low strength of the welding part, and is easy to cause the problems of tab falling and pole piece breakage, thereby leading to battery core faults. Disclosure of Invention The invention provides a novel technical scheme of a welding device, which at least can solve the technical problem of insufficient strength of a welding position of a tab and a pole piece in the prior art. The invention also provides a new technical scheme of the welding equipment. According to the first aspect of the invention, a welding device is provided, which comprises a reinforcing sheet supply unit, a reinforcing sheet bearing unit, a pole piece supporting unit, a welding unit and a pole lug supply unit, wherein the reinforcing sheet supply unit is positioned at one side of the reinforcing sheet bearing unit in the length direction, the welding unit and the pole lug supply unit are positioned above the pole piece supporting unit, the pole piece supporting unit is positioned above the reinforcing sheet bearing unit, and the reinforcing sheet bearing unit is movable along the length direction. Optionally, the welding device further comprises a base, the reinforcing sheet receiving unit is movably arranged on the base along the length direction of the reinforcing sheet receiving unit, and a driving piece is arranged on the base, and the output end of the driving piece is connected with the reinforcing sheet receiving unit. Optionally, an adsorption hole is formed on the upper side of the reinforcing sheet bearing unit. Optionally, the upside of reinforcement piece accepting unit is equipped with boss and dust absorption hole, the absorption hole is located the boss, the dust absorption hole is located the periphery region of boss. Optionally, the welding device further comprises a dust collection pipe, wherein the dust collection pipe is configured as an elastic telescopic pipe, and one end of the dust collection pipe is arranged on the reinforcing sheet bearing unit and communicated with the dust collection hole. Optionally, the reinforcing sheet supply unit comprises a reinforcing tape supply mechanism and a cutter mechanism, wherein the cutter mechanism is positioned between the reinforcing tape supply mechanism and the reinforcing sheet receiving unit. Optionally, the welding unit is an ultrasonic welding unit, and the welding device further comprises a first lifting mechanism, wherein the ultrasonic welding unit is arranged on the first lifting mechanism. Optionally, the reinforcing sheet receiving unit or the pole piece supporting unit may be lifted. Optionally, a welding protruding portion is arranged on the lower side of the ultrasonic welding unit, and the welding protruding portion and the adsorption hole are arranged in a staggered mode. Optionally, the welding device further comprises a second lifting mechanism, the pole piece supporting unit comprises a connecting seat and two parallel rotating supporting pieces, the connecting seat is arranged on the second lifting mechanism, the rotating supporting pieces are rotatably arranged on the connecting seat around the axis of the connecting seat, and the reinforcing piece supporting unit can extend into the space between the two rotating supporting pieces to support the pole piece. Optionally, the rotary support is configured as a support roller or a support shaft. Optionally, the moving direction of the reinforcing sheet receiving unit is the same as the axial direction of the rotating support member. According to a second aspect of the present invention there is provided a welding apparatus comprising a welding device as defined in any one of the above. According to the welding device disclosed by the invention, the reinforcing sheet can be provided to the lower side of the pole piece before the pole lug is welded with the pole piece through the synergistic effect of the reinforcing sheet supply unit and the reinforcing sheet bearing unit, and the welding unit can weld the reinforcing sheet, the pole piece and the pole lug together to form a three-layer composite structure, so that the structural strength of the welding part of the pole piece and the pole lug can be remarkably improved, the risk of falling off of the pole lug or breakage of the pole piece is reduced, the fault of the battery core is further caused, and the reliability and the service life of the battery core are effectively improved. Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying dr