CN215846464U

CN215846464U - Welding head structure

Info

Publication number: CN215846464U
Application number: CN202121760911.6U
Authority: CN
Inventors: 阳松柏; 饶顺平; 贺志鹏; 黄建球; 杨山; 陈杰
Original assignee: Dongguan Lithium Microelectronics Technology Co ltd
Current assignee: Dongguan Lithium Microelectronics Technology Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-18
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to the technical field of welding, in particular to a welding head structure, which comprises: a weld head body; a welding element disposed on the horn body; the welding spot lugs are arranged at the top of the welding element and are arranged on the welding element in a parallelogram structure, and at least one corner of the parallelogram structure is an obtuse angle or an acute angle; the welding point lugs are arranged on the welding element in a parallelogram structure, during welding, the welding surface is in a parallelogram structure, at least one angle of the parallelogram structure is an obtuse angle or an acute angle, compared with the rectangular welding surface in the prior art, the distance between the four sides of the welding surface of the parallelogram structure and the pole lug edge is increased, and in the welding process, the extrusion of the pole lug edge on the pole piece can be effectively reduced, so that the probability of reducing the toughness of the welded pole piece is reduced, and the risk of pole piece fracture in the process of winding the pole piece is further reduced.

Description

Welding head structure

Technical Field

The utility model relates to the technical field of welding, in particular to a welding head structure.

Background

Welding, also known as fusion, welding, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, in a heated, high temperature or high pressure manner.

With the development of society and the enhancement of environmental awareness, more and more devices select rechargeable secondary batteries as power sources. As an excellent secondary power source, a lithium ion battery has been widely used in mobile phones, notebook computers, electric vehicles, energy storage, and the like, because of its advantages of high energy density, high open circuit voltage, long cycle life, and environmental protection.

The manufacturing process of the lithium battery also needs a welding mode, wherein the pole lugs are welded on the pole pieces in a welding mode. In the prior art, as the welding surface of the welding head is rectangular, when the pole lug is welded on the pole piece, the pole lug edge easily extrudes the pole piece, so that the pole piece is injured, the toughness is reduced, a full-automatic sheet-making winding machine needs certain tension in production, and the fracture risk is increased under the action of the tension after the toughness of the pole piece is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a bonding tool structure, has solved among the prior art when the rectangle welding face welds utmost point ear limit and has produced the extrusion to the pole piece easily, makes the injured technical problem of pole piece, has realized reducing the extruded effect to the pole piece when utmost point ear limit rewelding.

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

a bonding tool structure, comprising:

a weld head body;

a welding element disposed on the horn body;

the welding spot lug is arranged at the top of the welding element and is provided with a plurality of welding spot lugs which are arranged on the welding element in a parallelogram structure, and at least one corner of the parallelogram structure is an obtuse angle or an acute angle.

As an improvement of the welding head structure according to the present invention, at least one set of adjacent sides of the parallelogram structure is equal.

As an improvement of the welding head structure, two sides of the top of the welding element are provided with chamfer structures.

As an improvement of the welding head structure according to the present invention, the welding head body is formed in a cylindrical shape, a welding portion recessed downward is provided on one side of the welding head body, and the welding element is provided on the welding portion.

As an improvement of the welding head structure, the number of the welding elements is at least two, and at least two welding elements are symmetrically arranged on two sides of the welding part.

As an improvement of the welding head structure according to the present invention, both ends of the welding portion are inclined toward both ends of the welding head body, respectively.

As an improvement of the welding head structure of the present invention, two ends of the welding head body are provided with planar portions, and the planar portions are correspondingly connected to upper edges of two ends of the welding portion.

As an improvement of the welding head structure of the present invention, two welding portions are provided, and the two welding portions are respectively provided on both sides of the welding head body.

As an improvement of the welding head structure, the two ends of the welding head body are connected with handle parts, and the cross-sectional area of the handle parts is smaller than that of the welding head body.

As an improvement of the welding head structure, openings are formed in both ends of the welding head body.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a welding head structure, through the bonding tool main part, the welding element, the cooperation of solder joint lug is used, the welding element sets up in the bonding tool main part, the solder joint lug is provided with a plurality ofly, a plurality of solder joint lugs are parallelogram structure and arrange on the welding element, during the welding, the face of welding is parallelogram structure, and parallelogram structure has at least one angle to be obtuse angle or acute angle, compare with the rectangle face of welding of prior art, the increase of distance between the four sides of the face of welding of parallelogram structure and utmost point ear limit, in welding process, can effectually reduce utmost point ear limit to the extrusion of pole piece, the probability that makes the toughness of post-welding pole piece reduce reduces, and then reduce the cracked risk of the in-process pole piece of coiling pole piece.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

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 only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic structural diagram at a in fig. 1.

Fig. 4 is a front view of the present invention.

Reference numerals: the welding head comprises a welding head body 1, a welding element 2, a welding spot convex block 4, a chamfer structure 5, a welding part 6, a plane part 7, a handle part 8 and an opening 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, 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.

Referring to fig. 1-4, a bonding tool configuration includes: the welding head comprises a welding head body 1 and a welding element 2, wherein the welding element 2 is arranged on the welding head body 1, a plurality of welding spot protruding blocks 4 are arranged at the top of the welding element 2, the plurality of welding spot protruding blocks 4 are arranged on the welding element 2 in a parallelogram structure, and at least one angle of the parallelogram structure is an obtuse angle or an acute angle.

Compared with the prior art, this application a welding head structure, through welding head main part 1, welding element 2, the cooperation of solder joint lug 4 is used, welding element 2 sets up on welding head main part 1, solder joint lug 4 is provided with a plurality ofly, a plurality of solder joint lugs 4 are parallelogram structure and arrange on welding element 2, during the welding, the face of welding is parallelogram structure, and parallelogram structure has at least one angle to be obtuse angle or acute angle, compare with the rectangle face of welding of prior art, the distance increase between the four sides of the face of welding of parallelogram structure and utmost point ear limit, in welding process, can effectually reduce the extrusion of utmost point ear limit to the pole piece, the probability that makes the toughness of post-welding pole piece reduce reduces, and then reduce the cracked risk of the in-process pole piece of coiling pole piece.

Preferably, at least one group of adjacent sides of the parallelogram structure are equal; the parallelogram structure is provided with at least one group of adjacent sides which are equal, the welding surface is of a diamond structure during welding, and the welding surface of the diamond structure can balance the extrusion force of the lug side to the pole piece during welding, thereby reducing the probability of toughness damage of the pole piece after welding.

Preferably, two sides of the top of the welding element 2 are provided with chamfer structures 5; through the setting of chamfer structure 5, the effectual intensity that has strengthened welding element 2 improves welding element 2's stability, simultaneously, has reduced the sharpness of welding element 2 both sides, and the effectual utmost point ear or the pole piece of preventing lacerate when the welding.

Specifically, when the ultrasonic welding mode is used for welding, the chamfer structure 5 is arranged to enable the welding element 2 to be conductive to ultrasonic waves, the chamfer structure 5 can be arranged around the top of the welding element 2 in the implementation process, and the height, the angle and the shape of the chamfer structure 5 are arranged according to actual conditions, so that the ultrasonic conduction effect of the welding element 2 is improved.

Preferably, the welding head body 1 is cylindrical, one side of the welding head body 1 is provided with a welding part 6 which is concave downwards, and the welding element 2 is arranged on the welding part 6; through being provided with columniform bonding tool main part 1, weld part 6 sets up in one side of bonding tool main part 1, and welding element 2 sets up on weld part 6, and when using the welding of columniform bonding tool main part 1, the setting of sunken weld part 6, it is concrete, and the bottom of weld part 6 is a plane, and is comparatively steady when effectual messenger's face of weld and utmost point ear or pole piece contact weld, is difficult to skid, and then influences the welding effect to utmost point ear or pole piece.

Preferably, at least two welding elements 2 are arranged, and at least two welding elements 2 are symmetrically arranged on two sides of the welding part 6; through setting up welding element 2 into at least two, two at least welding element 2 symmetries set up on weld part 6, when the welding, can be directly to utmost point ear needs the regional both ends direct weld fixation of welded, when guaranteeing utmost point ear and pole piece welded, also reduce the influence to pole piece toughness when welding utmost point ear, effectual reinforcing welding effect.

Specifically, when two welding elements are arranged, the two welding elements 2 can also be arranged in the middle of the welding part 6 in parallel, so that the welding effect is enhanced, the distance between the two welding elements 2 can be reduced, and the 6 positions of the welding part of the tab are concentrated; when welding element 2 was provided with four, can set up four welding element 2 equidistant on welding portion 6 or set up in the both sides of welding portion 6 as a set of symmetry with two, can set up welding element 2's quantity, position according to actual demand during the use to improve the welding effect to utmost point ear.

Preferably, both ends of the welding portion 7 are inclined toward both ends of the horn body 1, respectively; through the setting of the both ends slope of weld part 7 respectively to the both ends of bonding tool main part 1, the effectual junction to the both ends of weld part 7 and bonding tool main part 1 carries out the transition, the effectual phenomenon of preventing to appear interfering between bonding tool main part 1 and utmost point ear or the pole piece in welding process.

Specifically, both ends of the welding portion 6 can be arc-shaped or arc-shaped, so that transition between both ends of the welding portion 6 and the joint of the welding head body 1 is more natural and smooth, and interference is further reduced.

Preferably, two ends of the welding head body 1 are both provided with plane parts 7, and the plane parts 7 are correspondingly connected with the upper edges of the two ends of the welding part 6; through the setting of plane portion 7, the rounding off degree of effectual reduction bonding tool main part 1, when installation bonding tool main part 1, the multiplicable contact surface with mounting tool or staff, the installation of being convenient for to bonding tool main part 1, dismantlement.

Preferably, two welding parts 6 are arranged, and the two welding parts 6 are respectively arranged on two sides of the welding head body 1; through the setting of two welding parts 6, the efficiency of effectual improvement welding utmost point ear.

Preferably, both ends of the welding head body 1 are connected with handle parts 8, and the cross-sectional area of the handle parts 8 is smaller than that of the welding head body 1; through the setting of handle portion 8, handle portion 8 is used for being connected with the drive assembly of welding equipment, and through the setting that is less than the cross-sectional area of bonding tool main part 1 with the cross-sectional area of handle portion 8, effectual handle portion 8, bonding tool main part 1 carry out demarcation, distinguish, make the cross-sectional area of handle portion 8 and the cross-sectional area adaptation of its stiff end simultaneously.

Preferably, both ends of the welding head main body 1 are provided with openings 9; through opening 9's setting, opening 9 is the eave tile spanner hole for with eave tile spanner adaptation, the eave tile spanner of being convenient for installs, dismantles welding head main part 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A bonding tool construction, comprising:

a weld head body;

a welding element disposed on the horn body;

2. A bonding tool structure according to claim 1 wherein at least one set of adjacent sides of the parallelogram structure are equal.

3. A weld head construction according to claim 1, wherein the weld elements are provided with a chamfer construction on both sides of the top.

4. A weld head structure according to claim 1, wherein the weld head body is shaped as a cylinder, one side of the weld head body is provided with a weld portion recessed downward, and the weld element is provided on the weld portion.

5. A weld head construction according to claim 4, wherein there are at least two of the weld elements, at least two of the weld elements being symmetrically disposed on either side of the weld.

6. A bonding tool structure according to claim 4, wherein both ends of the bonding portion are inclined toward both ends of the bonding tool body, respectively.

7. A bonding tool structure according to any of claims 4-6, characterized in that both ends of the bonding tool body are provided with flat portions which are connected to the upper edges of both ends of the bonding part.

8. A weld head structure according to any one of claims 4 to 6, wherein there are two weld portions, one on each side of the weld head body.

9. A weld head construction according to claim 1 wherein handle portions are attached to each end of the weld head body, the handle portions having a cross-sectional area less than the cross-sectional area of the weld head body.

10. The bonding tool structure of claim 1, wherein the bonding tool body is open at both ends.