CN216858719U

CN216858719U - Support piece and tab welding clamp

Info

Publication number: CN216858719U
Application number: CN202121344820.4U
Authority: CN
Inventors: 王志军; 刘合鹏; 匡楼; 冯文忠
Original assignee: Dongguan Nvt Technology Co Ltd
Current assignee: Dongguan Nvt Technology Co Ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-07-01
Anticipated expiration: 2031-06-16

Abstract

The embodiment of the utility model discloses a supporting piece and a tab welding fixture, wherein the supporting piece is used for supporting a tab to be welded, a supporting surface of the supporting piece for supporting the tab is provided with a groove, and the side wall of the groove is provided with a first through hole communicated with the groove. The lug welding clamp with the support piece has the advantages that the support piece is provided with the first through hole, so that the temperature of the support piece can be reduced, the lug material is reduced, the lug welding recess is improved, the welding strength of the lug is improved, and the yield of products is improved.

Description

Support piece and tab welding clamp

Technical Field

The embodiment of the utility model relates to the technical field of batteries, in particular to a support piece and a tab welding clamp.

Background

The lithium battery has the advantages of high energy density, high power density, multiple recycling times, long storage time and the like, is widely used on portable electronic equipment such as mobile phones, digital cameras, portable computers and the like, has wide application prospect in the aspects of large and medium-sized electric equipment such as electric vehicles such as electric bicycles, electric vehicles and the like, energy storage facilities and the like, and becomes a key for solving global problems such as energy crisis, environmental pollution and the like.

The lithium battery is provided with the battery core and the lug connected with the battery core, and when the lug is welded, the welded lug is seriously sunken and low in welding strength due to poor heat dissipation performance of the conventional welding clamp, so that the performance of the battery is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the embodiment of the utility model provides a supporting piece and a tab welding clamp which have good heat dissipation performance and good tab welding strength of a produced battery.

A supporting piece is used for supporting a lug to be welded, a supporting surface of the supporting piece, which is used for supporting the lug, is provided with a groove, and the side wall of the groove is provided with a first through hole communicated with the groove.

In one embodiment, the first through hole is disposed adjacent to the supporting surface.

In one embodiment, the supporting member includes two first through holes,

the two first through holes are oppositely arranged;

or, two first through holes are positioned on the adjacent side walls.

In one embodiment, the diameter of the first through hole is 1/2 to 3/4 of the width of the inner wall of the first through hole opened by the support member.

In one embodiment, the support member further has a vent post, and the vent post is communicated with the first through hole.

In one embodiment, the supporting member further defines a second through hole communicating with the groove, the second through hole has a slag discharging surface inclined with respect to the supporting surface, the slag discharging surface is inclined toward the groove,

the second through hole and the first through hole are located on different surfaces of the support member.

In an embodiment, the second through hole is a square hole, and the height of the second through hole is 1/2 to 2/3 of the height of the inner wall of the second through hole opened by the support member, and/or the width of the second through hole is 1/2 to 3/4 of the width of the inner wall of the second through hole opened by the support member.

In one embodiment, an included angle formed by the slag discharging surface and the supporting surface is less than or equal to 60 degrees.

In one embodiment, the support has a step portion connecting the support surface and a surface adjacent to the support surface.

A tab welding jig comprising:

the base is provided with a placing groove and is used for placing the battery cell;

the support member of any one of the above, wherein the support member is detachably arranged on the base;

and the clamping piece is used for clamping the lug to be welded in a matching way with the supporting piece.

The tab welding clamp with the support piece has the advantages that the support piece is provided with the first through hole, so that the temperature of the support piece can be reduced, tab materials are reduced to be gasified, and then the sunken and high-tab welding strength of tab welding is improved, so that the yield of products is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

Fig. 1 is a schematic structural view of an embodiment of a tab welding jig according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic structural view of a support member according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of another embodiment of the support member of the present invention;

FIG. 5 is a schematic structural view of another embodiment of the supporting member of the present invention

FIG. 6 is a schematic structural diagram of another embodiment of the supporting member of the present invention.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the tab welding jig 10 includes: a base 100, a support 200 and a clamping member 300. The base 100 is provided with a placing groove 110 for placing a battery cell to be welded with a tab. The supporting member 200 is used for supporting a tab to be welded and detachably disposed on the base 100, wherein a supporting surface 210 of the supporting member 200 for supporting the tab is provided with a groove 220 to accommodate welding slag falling during welding, and a side wall of the groove 220 is provided with a first through hole 230 communicated with the groove 220. The clamping member 300 is used for clamping the tab in cooperation with the support member 200.

When the tab welding jig 10 is used, a battery cell to be welded with a tab is placed in the placing groove 110 of the base 100, and the area of the battery cell for welding the tab is arranged corresponding to the support member 200. And then, the tab is placed on the supporting piece 200 and is overlapped with the area of the tab to be welded of the battery cell, and the tab and the area of the tab to be welded of the battery cell are clamped by matching the clamping piece 300 and the supporting piece 200. And after the position of the lug is determined, welding the lug. In this embodiment, the tab is welded through the tab welding port 310 on the clamping member 300, specifically, the tab is heated through the welding port 310, so that it absorbs heat, and the absorbed heat is transferred to the region where the tab is to be welded on the electric core, so as to weld the tab and the electric core, where the tab is heated through laser beam irradiation. In the welding process, the welding slag falls into the groove 220 of the support member, and the first through hole 230 can be used for ventilating and cooling the support member 200, or can discharge the welding slag in the groove 220 out of the support member 200 through the first through hole, so that the support member 200 is cooled. It should be noted that, the tab may be placed on the supporting surface first, then the electric core is placed in the placing groove, the area where the tab is to be welded on the electric core and the tab are arranged in a stacked manner, then the electric core is clamped by the clamping member, and at this time, the area where the tab is to be welded on the electric core is heated through the welding port.

Above-mentioned utmost point ear welding jig 10 because support piece 200 has first through-hole 230, can cool down support piece 200, reduces utmost point ear material gasification, and then improves utmost point ear welded sunken, improves the welding strength of utmost point ear to improve the yield of product. In addition, since the supporting member is easily worn during the welding process, the supporting member 200 is detachably disposed on the base 100, and when the supporting member 200 is worn, only the supporting member 200 needs to be replaced, and the entire jig does not need to be replaced.

In one embodiment, as shown in fig. 3 to 6, the first through hole 230 is disposed adjacent to the supporting surface 210, and the supporting member 200 includes two first through holes 230, and the two first through holes 230 are disposed opposite to each other. Wherein, the first through hole 230 is disposed adjacent to the supporting surface 210, which means that the distance between the first through hole 230 and the supporting surface 210 is smaller than the distance between the first through hole and the bottom of the groove. In one embodiment, the distance between the first through hole and the supporting surface is 1/5 to 1/2 of the distance between the first through hole and the bottom of the groove. At this time, the first through hole 230 is mainly used for ventilating and cooling the supporting member 200, and when the first through hole 230 is adjacent to the supporting surface 210, it can more rapidly take away heat. When first through-hole 230 is two, and when setting up relatively, one of them can be used to connect the gas post to blow to it through the gas post, and then further improve the radiating efficiency, and blow to first through-hole 230 through the gas post and can also reduce the welding slag of attaching to on utmost point ear, and then improve the performance of welding utmost point ear back electricity core, wherein, the gas in the gas post includes argon gas, and its reducible oxidation reaction improves welding quality, and then improves the ability to flow over of utmost point ear welding department. It should be noted that in other embodiments, two first through holes 230 may also be located on the adjacent sidewalls. In addition, the number of the first through holes 230 may be other numbers, such as three, four, etc.

In one embodiment, as shown in fig. 4, the supporting member 200 further has a ventilation column 260, and the ventilation column 260 is connected to the first through hole 230 for connecting with the ventilation column to blow air into the supporting member 200 to increase the heat dissipation speed.

In one embodiment, the first through hole 230 is circular, and the diameter of the first through hole 230 is 1/2 to 3/4, such as 3/5, of the width of the inner wall of the first through hole 230 of the supporting member 200. Wherein the inner wall refers to the side wall of the groove. Thus, on one hand, the strength of the supporting piece 200 can be ensured, the supporting piece 200 is convenient to mount, and on the other hand, the heat dissipation effect can be better. In other embodiments, the first through hole 230 may also be square, and the length of the side is 1/2 to 3/4 of the width of the inner wall of the first through hole 230 formed in the supporting member 200.

In an embodiment, as shown in fig. 3, the supporting member 200 further defines a second through hole 240 communicating with the groove 220, the second through hole 240 has a slag discharging surface 241 inclined with respect to the supporting surface 210, and the slag discharging surface 241 is inclined toward the groove 220 for discharging the welding slag in the groove 220 to the outside of the supporting member 200. Wherein, the slag discharging surface is inclined towards the groove 220, which means that the distance between the end of the slag discharging surface close to the opening of the groove 220 and the inner wall corresponding to the groove 220 is less than the distance between the end of the slag discharging surface far away from the opening of the groove 220 and the inner wall, so that the slag discharging surface and the inner wall of the groove 220 form a conical structure. The slag discharge surface enables welding slag falling into the groove 220 to be directly discharged to the outside of the support member 200 through the slag discharge surface, and the heat dissipation speed of the lug placing area on the support member 200 is further improved.

In this embodiment, the second through hole 240 and the first through hole 230 are located on different surfaces of the supporting member 200, and in other embodiments, the second through hole 240 and the first through hole 230 may also be located on the same surface of the supporting member 200.

In one embodiment, the second through hole 240 is a square hole having a height 1/2-2/3 of the inner wall of the second through hole 240 defined by the support member 200, and/or the width of the second through hole 240 is 1/2-3/4 of the inner wall of the second through hole 240 defined by the support member 200. Like this, on the one hand can guarantee support piece 200's intensity, on the other hand can accelerate the region of arranging the sediment, accelerates the heat dissipation. In other embodiments, as shown in fig. 6, the second through hole 240 may also be a circular hole.

In the embodiment shown in fig. 3, the angle formed by the slag discharge surface and the supporting surface 210 is less than or equal to 60 degrees. For example, the slag discharge surface and the support surface 210 form an angle of 30 degrees, 45 degrees, etc. In this way, it can be better used for deslagging. It should be noted that, in other embodiments, as shown in fig. 4 to 6, the slag discharging surface is parallel to the supporting surface 210, and it can also be understood that the second through hole 240 is vertically formed on the inner wall of the supporting member 200.

In one embodiment, the supporting member 200 has a step portion 250, and the step portion 250 connects the supporting surface 210 and a surface adjacent to the supporting surface 210, i.e. the surface of the step portion facing the supporting surface 210 is stepped from the supporting surface 210. The stepped portion is matched with the positioning structure 130 on the base 100 to position the supporter 200 when it is installed.

In an embodiment, as shown in fig. 1 and fig. 2, the base 100 is provided with a through slot 120, and the supporting member 200 is detachably disposed in the through slot 120, wherein the supporting member 200 is connected to the base 100 by a threaded fastener, and an axial direction of the first through hole is consistent with an extending direction of the through slot. The through groove facilitates installation of the support member 200 on one hand, and facilitates cleaning of the lug welding fixture on the other hand, so that welding slag can be removed. In other embodiments, the supporting member 200 can be detachably connected to the base 100 through a clamping structure.

It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described in the present specification, which are provided as additional limitations to the present invention and to provide a more thorough understanding of the present disclosure. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a support piece for support treat welding utmost point ear, its characterized in that, support piece is used for supporting utmost point ear's holding surface and has seted up the recess, the lateral wall of recess seted up with the first through-hole of recess intercommunication.

2. The support member of claim 1, wherein the first through hole is disposed adjacent the support surface.

3. The support member according to claim 1, wherein the support member includes two of the first through holes,

the two first through holes are oppositely arranged;

or, two first through holes are positioned on the adjacent side walls.

4. The support member of claim 1, wherein the diameter of the first through hole is 1/2-3/4 of the width of the inner wall of the first through hole.

5. The support member as claimed in claim 4, further having a vent post in communication with the first through hole.

6. The supporting member according to claim 1, wherein the supporting member further defines a second through hole communicating with the groove, the second through hole having a slag discharge surface inclined with respect to the supporting surface, the slag discharge surface being inclined toward the groove,

7. The supporting member as claimed in claim 6, wherein the second through hole is a square hole having a height 1/2-2/3 of the height of the inner wall of the second through hole opened in the supporting member, and/or a width 1/2-3/4 of the width of the inner wall of the second through hole opened in the supporting member.

8. The support of claim 6, wherein the slag discharge surface forms an angle with the support surface that is less than or equal to 60 degrees.

9. The support of claim 1, wherein the support has a step connecting the support surface and a surface adjacent to the support surface.

10. A tab welding jig, comprising:

the support of any one of claims 1 to 9, which is removably disposed on the base;

and the clamping piece is used for clamping a tab to be welded in a matching way with the supporting piece.