CN220659535U

CN220659535U - Welding seat

Info

Publication number: CN220659535U
Application number: CN202322237213.3U
Authority: CN
Inventors: 黄远燊; 李雪江; 郑明清
Original assignee: Zhejiang Liwei Energy Technology Co ltd
Current assignee: Zhejiang Liwei Energy Technology Co ltd
Priority date: 2023-08-18
Filing date: 2023-08-18
Publication date: 2024-03-26
Anticipated expiration: 2033-08-18

Abstract

The utility model discloses a welding seat, which comprises a connecting seat and an anvil, wherein the anvil is connected with the connecting seat, the anvil is provided with a surface, a plurality of bulges are arranged on the surface, a plurality of bulge arrays are arranged at intervals, and a groove is formed between two adjacent bulges, so that the depth consistency of the plurality of grooves can be ensured by arranging the bulges arranged in the plurality of arrays, the depth consistency of the plurality of grooves can be improved, the situation that the bulges puncture a diaphragm or gummed paper can be avoided, the risk of short circuit in the battery core is reduced, and the use reliability of the battery is improved.

Description

Welding seat

Technical Field

The utility model relates to the technical field of tab welding, in particular to a welding seat.

Background

When the lithium battery tab and the foil are ultrasonically welded, the tab is placed on the welding seat, the welding head is pressed into the tab surface, the vibration friction tab surface can be downwards sunken into the groove of the welding seat, and the foil is extruded, deformed and raised to form the welding height. With the improvement of the energy density of the battery cell, the thickness of the materials such as foil, gummed paper, diaphragm and the like is thinner and thinner, and the risk of internal short circuit of the battery cell caused by the gummed paper and the diaphragm is caused by the fact that the welding height is too high. The conventional welding seat generally forms a groove through corrosion treatment, the depth consistency of the groove is poor, and when the tab is welded, the welding height generated by the tab is extremely poor and is not easy to control, so that the requirements of increasingly high battery cell energy density in the industry cannot be met.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the welding seat which can improve the consistency of the welding height of the electrode lugs so as to reduce the risk of short circuit in the battery core.

According to the welding seat disclosed by the embodiment of the utility model, the welding seat is used for welding the tab and comprises a connecting seat and an anvil, wherein the anvil is connected with the connecting seat and is provided with a surface, the surface is provided with a plurality of protrusions, a plurality of protrusion arrays are arranged at intervals, and a groove is formed between two adjacent protrusions.

The welding seat provided by the embodiment of the utility model has at least the following beneficial effects:

the bulges are arranged at intervals in a matrix array, part bulges among the bulges are arranged at intervals along the length direction of the anvil, and the other part bulges are arranged at intervals along the width direction of the anvil.

According to some embodiments of the utility model, the groove has a first side wall and a second side wall disposed opposite to each other, and a distance between the first side wall and the second side wall gradually decreases along a concave direction of the groove.

According to some embodiments of the utility model, the protrusions are trapezoidal step structures.

According to some embodiments of the utility model, a plurality of the grooves are in communication with each other.

According to some embodiments of the utility model, the anvil is of unitary construction with the connector block.

According to some embodiments of the utility model, the connecting seat has side surfaces, and the anvil is arranged at corners of the side surfaces.

According to some embodiments of the utility model, the connecting seat has a plurality of side surfaces, the plurality of side surfaces are arranged along the circumference of the connecting seat, and the anvil is arranged at the corner of each side surface.

According to some embodiments of the utility model, each of the sides is provided with a mounting hole through the connecting seat for passing a fastener therethrough.

According to some embodiments of the utility model, each of the sides is provided with a positioning portion for positioning the position of the connection socket.

According to some embodiments of the utility model, the protrusions are provided with a rust protection layer.

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

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a solder socket according to an embodiment of the present utility model;

FIG. 2 is an enlarged partial view of a plurality of projections of an anvil according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a groove according to an embodiment of the present utility model.

Reference numerals:

the connecting seat 100, the side 110, the mounting hole 120, the positioning portion 130, the anvil 200, the surface 201, the protrusion 210, the groove 220, the first sidewall 221, the second sidewall 222.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the related art, when the lithium battery tab and the foil are ultrasonically welded, the tab is placed on the welding seat, the welding head is pressed into the tab surface, the vibration friction tab surface can be downwards sunken into the groove of the welding seat, and the foil is extruded, deformed and raised to form the welding height. With the improvement of the energy density of the battery cell, the thickness of the materials such as foil, gummed paper, diaphragm and the like is thinner and thinner, and the risk of internal short circuit of the battery cell caused by the gummed paper and the diaphragm is caused by the fact that the welding height is too high. The conventional welding seat generally forms a groove through corrosion treatment, the depth consistency of the groove is poor, and when the tab is welded, the welding height generated by the tab is extremely poor and is not easy to control, so that the requirements of increasingly high battery cell energy density in the industry cannot be met.

Referring to fig. 1 and 2, according to an embodiment of the present utility model, a welding seat for welding a tab includes a connecting seat 100 and an anvil 200, the anvil 200 is connected to the connecting seat 100, the anvil 200 has a surface 201, the surface 201 is provided with a plurality of protrusions 210, the plurality of protrusions 210 are arranged at intervals, and a groove 220 is formed between two adjacent protrusions 210, so that by arranging the plurality of protrusions 210 arranged in an array, the depth consistency of the plurality of grooves 220 can be ensured, so that the depth consistency of the plurality of grooves 220 is improved, the occurrence of the condition that the protrusions 210 puncture a diaphragm or gummed paper can be avoided, so that the risk of short circuit occurring inside a battery core is reduced, and the reliability of use of the battery is improved.

Specifically, the plurality of protrusions 210 are arranged at intervals in a matrix array, part of the protrusions 210 in the plurality of protrusions 210 are arranged at intervals along the length direction of the anvil 200, and the other part of the protrusions 210 are arranged at intervals along the width direction of the anvil 200, so that the depth consistency of the plurality of grooves 220 can be ensured by arranging the plurality of protrusions 210 arranged in an array manner, the depth consistency of the plurality of grooves 220 is improved, the condition that the protrusions 210 puncture a diaphragm or gummed paper is avoided, the risk of short circuit in the battery core is reduced, and the use reliability of the battery is improved.

It should be noted that, when the tab is welded, the tab is placed on the anvil 200, and the welding head moves along the direction close to the anvil 200, so that the welding teeth on the welding head can squeeze the tab into the groove 220, so that the tab generates a welding mark, and the consistency of the welding mark height of the tab can be ensured, so that the situation that the protrusion 210 punctures the diaphragm or gummed paper is avoided.

It will be appreciated that in some embodiments, the plurality of protrusions 210 may be arranged at intervals in a circumferential direction array, so as to ensure uniformity of depth of the grooves 220, which will not be described in detail herein.

Referring to fig. 3, in some embodiments of the present utility model, the groove 220 has a first sidewall 221 and a second sidewall 222 disposed opposite to each other, and a distance between the first sidewall 221 and the second sidewall 222 is gradually reduced along a recess direction of the groove 220, so that when the tab is pushed by the welding head, the first sidewall 221 and the second sidewall 222 can guide the tab into the groove 220, thereby facilitating the tab to form a welding mark.

Specifically, the first sidewall 221 and the second sidewall 222 are both planar structures, the first sidewall 221 and the second sidewall 222 are integrally in a horn-shaped structure, and the distance between the first sidewall 221 and the second sidewall 222 is gradually reduced along the recess direction of the groove 220, so that the first sidewall 221 and the second sidewall 222 can guide the tab into the groove 220 when the welding head pushes the tab, thereby facilitating the tab to form a welding mark.

It can be understood that, when the distance between the first sidewall 221 and the second sidewall 222 is unchanged along the concave direction of the groove 220, the first sidewall 221 and the second sidewall 222 are perpendicular to the periphery of the notch of the groove 220, when the welding head pushes the tab into the anvil 200, the stress at the bending position of the tab is too concentrated, when the tab is bent in the subsequent process, the tab is easy to bend and break, and the bending degree of the tab can be reduced by gradually reducing the distance between the first sidewall 221 and the second sidewall 222 along the concave direction of the groove 220, so that the stress concentration at the bending position of the tab is avoided, and the breaking is avoided when the tab is bent, which will not be described in detail herein.

Of course, in some embodiments, the first sidewall 221 and the second sidewall 222 may also have an arc structure, and may be capable of guiding the tab into the groove 220, which is not limited herein.

It is understood that the distance between the first sidewall 221 and the second sidewall 222 is gradually reduced along the recess direction of the groove 220, and the tab can be conveniently separated from the soldering base, so as to facilitate the removal of the tab, which will not be described in detail herein.

Referring to fig. 2, in some embodiments of the present utility model, the protrusion 210 has a stepped structure of a trapezoid shape, a cross section of the protrusion 210 has a trapezoid shape along a height direction of the protrusion 210, a cross section of the protrusion 210 has a rectangular shape along a direction perpendicular to the height direction of the protrusion 210, and a length and a width of the rectangular shape gradually increase along a recess direction of the recess 220, so that the tab can be guided into the recess 220.

It is understood that rectangular structures include rectangular structures and square structures, and are not limited herein.

It should be noted that, in some embodiments, the protrusion 210 may also have a truncated cone structure, and the cross section of the protrusion 210 along the direction perpendicular to the height direction of the protrusion 210 has a circular structure, and the diameter of the circular structure gradually increases along the recess direction of the groove 220, which is not described in detail herein. In addition, in some embodiments, the circular structure may replace an elliptical structure or a polygonal structure, and the shape of the welding mark of the tab may be specifically selected according to the actual production, which is not limited herein.

Referring to fig. 2, in some embodiments of the present utility model, the plurality of grooves 220 communicate with each other so that the welding marks on the tabs are connected with each other, so that the connection strength of the tabs can be improved, thereby improving the structural stability of the tabs.

Specifically, the circumferential direction of each protrusion 210 is surrounded by a plurality of grooves 220 which are sequentially communicated, so that the welding marks on the tabs are mutually connected, the connection strength of the tabs can be improved, and the structural stability of the tabs is improved.

In some embodiments of the present utility model, the anvil 200 and the connection seat 100 are integrally formed, so that the number of dies can be reduced, and the manufacturing cost of the dies can be reduced, thereby reducing the manufacturing cost of the welding seat.

Specifically, the anvil 200 and the connection pad 100 may be integrally formed in a die-casting manner, so that the number of dies can be reduced, and the manufacturing cost of the dies can be reduced, thereby reducing the manufacturing cost of the soldering pad.

Of course, in some embodiments, the anvil 200 and the connector block 100 may also be fixedly connected by welding. Among them, welding modes include, but are not limited to, resistance welding, ultrasonic welding, and laser welding.

Referring to fig. 1, in some embodiments of the present utility model, the connection pad 100 has side surfaces 110, and anvil blocks 200 are disposed at corners of the side surfaces 110, and by disposing a plurality of anvil blocks 200 on the side surfaces 110 of the connection pad 100, when one of the anvil blocks 200 is worn out and cannot be used, another anvil block 200 can be selected to weld the tab, without integrally replacing the pad, so that the service life of the pad can be improved, and the use cost of the pad can be reduced.

Specifically, the side 110 has a rectangular structure, the side 110 has four corners, the anvil 200 is correspondingly configured with four corners, the four anvils 200 are respectively located at the four corners of the side 110, when one of the anvils 200 is worn and cannot be used, the other anvil 200 can be selected to weld the tab, and the welding seat does not need to be replaced integrally, so that the service life of the welding seat can be prolonged, and the use cost of the welding seat can be reduced.

It should be noted that, in some embodiments, the side 110 may also have a polygonal structure such as a pentagonal structure or a hexagonal structure, which is not limited herein.

Referring to fig. 1, in some embodiments of the present utility model, the connection base 100 has a plurality of side surfaces 110, the plurality of side surfaces 110 are disposed along the circumferential direction of the connection base 100, and each side surface 110 has an anvil 200 at a corner, when one anvil 200 is worn out and cannot be used, another anvil 200 can be selected to weld the tab, without integrally replacing the welding base, so that the service life of the welding base can be improved, and the use cost of the welding base can be reduced.

Specifically, four side 110 are configured, along the direction perpendicular to the length direction of connecting seat 100, the cross section of connecting seat 100 is rectangular structure, four side 110 set up along the circumference of connecting seat 100, and side 110 has four corners, every side 110's corner department all is equipped with anvil 200 for be provided with sixteen anvil 200 on the welding seat, can increase anvil 200's quantity, when one of them anvil 200 wearing and tearing can't use, can select another anvil 200 to weld the tab, and need not whole change welding seat, can improve the life of welding seat, and reduce the use cost of welding seat.

Of course, in some embodiments, the cross section of the connection seat 100 may also have a polygonal structure such as a pentagonal structure or a hexagonal structure along a direction perpendicular to the length direction of the connection seat 100, and the side 110 may be correspondingly configured with five or six lamps, which is not limited herein.

In some embodiments of the present utility model, each side 110 is provided with a mounting hole 120, the mounting holes 120 extending through the connection block 100, the mounting holes 120 for passing fasteners therethrough, which can facilitate mounting the weld block on a work table of a welding apparatus.

Specifically, when installing the welding seat, the fastener can be worn out in the mounting hole 120, the fastener is fixed on the workbench of the welding equipment through the mode of threaded connection, when all anvils 200 of one side 110 are worn out and can not be used, an operator can loosen the fastener, replace another unworn side 110 for use, and the fastener is installed on the workbench of the welding equipment through another corresponding mounting hole 120, so that the welding seat can be conveniently installed on the workbench of the welding equipment.

The fastening member is not limited to a structure such as a bolt or a screw.

It should be noted that, the mounting hole 120 has a stepped hole structure, so that the nut of the fastener can be hidden, so as to avoid the interference between the welding head and the fastener.

Referring to fig. 1, in some embodiments of the present utility model, each side 110 is provided with a positioning portion 130, and the positioning portion 130 is used to position the connecting seat 100, so that the welding seat can be positioned without repeatedly adjusting the position of the welding seat, so as to facilitate the use of the anvil 200 of the other side 110 by an operator.

Specifically, the positioning portion 130 is a positioning groove, and the positioning groove can accommodate a positioning pin on a workbench of the welding device to circumferentially position the welding seat, so that the position of the welding seat does not need to be repeatedly adjusted, and the anvil 200 of the other side 110 is convenient for an operator to replace.

In some embodiments, the positioning portion 130 may be a positioning pin, and the positioning pin may be inserted into a positioning groove on a workbench of the welding apparatus, or may perform circumferential positioning on the welding seat, which is not limited herein.

In some embodiments of the present utility model, the protrusion 210 is provided with a rust preventive layer (not shown in the drawings), which is coated on the outer circumferential side of the protrusion 210, so that the occurrence of rust of the anvil 200 can be prevented.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The present embodiment has been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit.

Claims

1. A weld holder for welding a tab, comprising:

a connection base (100);

the anvil (200) is connected with the connecting seat (100), the anvil (200) is provided with a surface (201), the surface (201) is provided with a plurality of protrusions (210), a plurality of protrusions (210) are arranged at intervals, and a groove (220) is formed between two adjacent protrusions (210).

2. The holder according to claim 1, wherein the recess (220) has a first sidewall (221) and a second sidewall (222) disposed opposite to each other, and a distance between the first sidewall (221) and the second sidewall (222) is gradually reduced along a recess direction of the recess (220).

3. The weld base of claim 1, wherein the protrusion (210) is a trapezoidal step structure.

4. The weld holder of claim 1, wherein a plurality of the grooves (220) are in communication with one another.

5. The anvil of claim 1, wherein the anvil (200) is of unitary construction with the connector (100).

6. The weld base according to claim 1, characterized in that the connection base (100) has side faces (110), the anvil (200) being provided at the corners of the side faces (110).

7. The socket of claim 1, wherein the connection socket (100) has a plurality of side surfaces (110), the plurality of side surfaces (110) being disposed along a circumferential direction of the connection socket (100), and the anvil (200) being disposed at a corner of each side surface (110).

8. The socket of claim 7, wherein each side (110) is provided with a mounting hole (120), the mounting holes (120) extending through the connection socket (100), the mounting holes (120) being for fasteners to pass through.

9. The soldering station as claimed in claim 7, characterized in that each side (110) is provided with a positioning portion (130), the positioning portions (130) being used for positioning the connection station (100).

10. The soldering station according to claim 1, wherein the protrusion (210) is provided with a rust protection layer.