CN219093952U - Rolling type ultrasonic welding head and ultrasonic seam welder - Google Patents
Rolling type ultrasonic welding head and ultrasonic seam welder Download PDFInfo
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- CN219093952U CN219093952U CN202223362212.3U CN202223362212U CN219093952U CN 219093952 U CN219093952 U CN 219093952U CN 202223362212 U CN202223362212 U CN 202223362212U CN 219093952 U CN219093952 U CN 219093952U
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- 238000003466 welding Methods 0.000 title claims abstract description 223
- 238000005096 rolling process Methods 0.000 title claims abstract description 29
- 230000007704 transition Effects 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000004021 metal welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a rolling type ultrasonic welding head and an ultrasonic seam welder, which comprise a welding disc, wherein the welding disc comprises a welding surface arranged on the outer circumference; one end of the connecting rod is fixedly connected with the welding disc; the welding surface is provided with a raised welding area, and the length of the welding area is smaller than the circumference of the welding surface. According to the utility model, through the welding area arranged on the welding surface, intermittent welding is realized in the welding process of the battery tab, compared with the whole section of welding, less metal scraps are splashed in the welding process, the risk of short circuit caused by the metal scraps entering the inside of the battery core is reduced, meanwhile, the dust removal difficulty is also reduced, and the tearing of the root part of the battery tab is effectively reduced when the battery tab is folded.
Description
Technical Field
The utility model relates to the technical field of manufacturing of new energy lithium batteries, in particular to a rolling type ultrasonic welding head and an ultrasonic seam welder.
Background
In the lithium battery production process, after the pole pieces are wound or laminated into the battery core, the pole lugs are required to be connected through welding so as to meet the subsequent overcurrent requirement, and along with the development of the lithium battery technology, the capacity and the volume of the lithium battery are larger and larger, so that the trend of longer and longer full pole lug welding length is generated.
In the related art, ultrasonic metal welding is a process between cold pressure welding and friction welding, and the ultrasonic metal welding comprises two welding modes of pressure welding and roll welding. When the electrode lugs are welded in the traditional mode, a welding process of pressure welding is mostly adopted, but when the battery electrode lugs with longer welding marks are welded in the pressure welding process, a plurality of ultrasonic welding machines are required to be arranged at the positive electrode and the negative electrode respectively on the premise of meeting the production beat, so that resource waste is caused, and the cost is increased.
Therefore, in the prior art, the welding of the electrode lugs is performed in a roll welding mode, and the ultrasonic roll welding device is based on the fact that a motor drives a roll welding head to rotate and is matched with the vibration action of ultrasonic waves to realize the welding of the electrode lugs of the battery.
However, when the whole section of the battery tab is welded by roll welding in the prior art, the welding length is long, so that the problems of large splashing of metal scraps, thicker welding, easy tearing of the root part of the tab during folding and the like easily occur in the whole welding process.
Disclosure of Invention
The utility model provides a rolling type ultrasonic welding head and an ultrasonic seam welder, which aim to solve the defect that in the related art, metal scraps are large in splashing and the root part of a pole lug is easy to tear when welding is thicker and folded.
The utility model adopts the technical scheme that the rolling type ultrasonic welding head and the ultrasonic seam welder comprise:
a welding disk including a welding surface provided on an outer circumference;
one end of the connecting rod is fixedly connected with the welding disc;
the welding device is characterized in that a convex welding area is arranged on the welding surface, and the length of the welding area is smaller than the circumference of the welding surface.
Preferably, the welding area includes at least one of a corrosion pattern, a diamond pattern, or a hemispherical pattern.
Preferably, a plurality of welding areas are provided, and adjacent welding areas are distributed at intervals on the welding surface.
Preferably, two circles of chamfers are further arranged on the outer circumference of the welding disc, and the chamfers are positioned on two sides of the welding surface.
Preferably, the rolling type ultrasonic welding head further comprises a protection section, and the protection section is a protrusion which is positioned on one side of the welding disc away from the connecting rod and is coaxial with the welding disc.
Preferably, the welding device further comprises a transition rod, wherein the connection surface of the transition rod and the welding disc is an arc surface.
The utility model also provides an ultrasonic seam welder, including foretell roll extrusion formula ultrasonic bonding tool.
Preferably, at least one pair of said rolling ultrasonic horn is included.
Compared with the prior art, the utility model has the following beneficial effects:
1. the rolling type ultrasonic welding head adopts the welding head with the tooth-shaped lines, so that intermittent welding can be realized during welding, less splashing is generated during the welding process, and the damage of metal scraps to a battery caused by splashing is reduced;
2. in intermittent welding, the rolling type ultrasonic welding head can effectively prevent the root of the battery lug from being torn when the lug is folded;
3. the rolling type ultrasonic welding head is provided with the interval sections, so that the welding effect on the lugs is avoided in the use process, and intermittent welding can be realized; the wear degree of the welding head is reduced, and the weight of the welding head is reduced to a certain extent;
4. the rolling type ultrasonic welding head is provided with the protection section, so that the welding surface is protected from being damaged, and the service life of the welding head is ensured.
Drawings
The utility model is described in detail below with reference to examples and figures, wherein:
FIG. 1 is a schematic view of a rolled ultrasonic horn according to an embodiment of the present application;
FIG. 2 is a front view of a rolled ultrasonic horn provided in an embodiment of the present application;
FIG. 3 is a side view of a rolled ultrasonic horn provided in an embodiment of the present application;
FIG. 4 is a schematic view of a full tooth form rolling ultrasonic horn provided in an embodiment of the present application;
fig. 5 is an elevation view of a full tooth roll-on ultrasonic horn provided in an embodiment of the present application.
1. A welding plate; 10. a welding surface; 101. etching lines; 102. diamond-shaped patterns; 103. hemispherical grain; 11. chamfering;
2. a protection section;
3. a transition rod;
4. and (5) connecting a rod.
Detailed Description
The utility model mainly relates to a rolling type ultrasonic welding head which is mainly applied to an ultrasonic seam welder, wherein the ultrasonic seam welder generally comprises a base seat, an ultrasonic welding mechanism for welding battery lugs, a displacement mechanism for adjusting the distance between a pair of welding heads and an adjusting mechanism for adjusting welding pressure. The rolling type ultrasonic welding head is arranged in an ultrasonic welding mechanism, moves to a preset position under the adjustment of a displacement mechanism and an adjustment mechanism, vibrates under the action of ultrasonic waves, and performs welding action on a product to be welded, such as a tab, passing through between the pair of welding heads.
The embodiment of the utility model provides a rolling type ultrasonic welding head and an ultrasonic seam welder, which can solve the problem that in the prior art, when welding, metal scraps are splashed greatly, and when welding marks are folded thicker, the root part of a pole lug is easy to tear.
As shown in fig. 1, the rolling ultrasonic welding head in the embodiment of the utility model comprises a disc-type welding disc 1 and a connecting rod 4 positioned at one side of the welding disc, wherein one end of the connecting rod 4 is fixedly connected with the welding disc 1, the other end of the connecting rod is connected with an ultrasonic welding mechanism, and the welding disc 1 and the connecting rod 4 are arranged along the length direction of the connecting rod 4.
As shown in fig. 2, the welding surface 10 is provided on the outer circumference of the welding disk 1, and the diameter of the welding surface 10 is larger than the diameter of the connecting rod 4. The welding surface 10 is provided with a raised welding area comprising at least one of a corrosion pattern 101, a diamond pattern 102 or a hemispherical pattern 103. Wherein, the etching lines 101 are formed by a plurality of irregularly shaped bulges and irregularly distributed in a certain area; the diamond-shaped patterns 102 are formed by a plurality of diamond-shaped bulges and are regularly distributed in a certain area in a parallelogram shape; the hemispherical grains 103 are formed by a plurality of hemispherical bulges and are distributed in a quadrilateral array in a certain area. It should be noted that, the processing of the above-mentioned multiple lines can all adopt the line processing technology on the ultrasonic seam welder welding head in the prior art, such as the processing of the electric network flowers, whether the lines 101, 102 or 103 are corroded, the specific density degree of the lines and the arrangement direction of the lines can be adjusted according to the requirements of the actual product processing, and in this embodiment, specific limitation is not required, as long as the welding process requirements of the products such as the polar lugs can be satisfied.
In some embodiments, the weld area provided on the welding surface 10 of the welding disk 1 adopts the etch mark 101.
In other embodiments, the welding area provided on the welding surface 10 of the welding disk 1 adopts the corrosion patterns 101 and the diamond patterns 102.
In other embodiments, the welding area on the welding surface 10 of the welding disk 1 adopts corrosion patterns 101, diamond patterns 102 and hemispherical patterns 103.
The welding surface 10 of the welding disk 1 can be matched with any one, two or more welding areas according to the requirements of the actual processing technology. If more than one welding area is provided on the welding surface 10, a spacing area exists between two adjacent welding areas, the spacing area is surrounded by two adjacent welding areas and the welding surface 10 and is arranged in a concave shape, and thus, the spacing area and the welding area form a height difference.
When an ultrasonic seam welder performs welding work, a pair of rolling ultrasonic welding heads are needed to be matched for use. When welding work is carried out, ultrasonic waves are continuously sent, the two welding discs 1 rotate and press at the same time, when lines on the welding discs 1 contact with the lugs at the same time, the corresponding areas of the battery lugs are pressed by the lines and then welded by the ultrasonic waves.
Because the height difference is formed between the spacing areas and the welding areas, namely, on the welding heads which are oppositely arranged, the gap between the pair of welding areas is smaller than the gap between the pair of spacing areas, the tab to be welded is welded after passing through the pair of welding heads, but is not welded when passing through the pair of spacing areas, so that the spacing sectional welding on the tab is formed.
In this process, the welded area of the tab plays a different role. When welding the tab laser welding area which needs to be fixed with the pin part, the welding areas on the pair of welding discs 1 are in interference compression, one welding area is the corrosion pattern 101, and the other welding area adopts the diamond pattern 102 or the hemispherical pattern 103, so that the tab of the area can be welded and fixed with the pin conveniently; when the welding areas only play a role of fixing the lugs and do not loose, the welding areas on the pair of welding discs 1 are in interference compression, one welding area is diamond-shaped patterns 102 or hemispherical patterns 103, and the other welding area adopts the diamond-shaped patterns 102 or hemispherical patterns 103 to fix the multi-layer lugs in a welding mode.
In other embodiments, the lines adopted in the two welding areas where the pair of welding heads are matched can be designed according to a specific process, and can be any regular or irregular shape, density or depth, the size of the distributed areas, the specific density degree of the lines and the arrangement direction of the lines can be adjusted according to the requirements of actual product processing, and the welding process requirements of products such as tabs and the like can be met without specific limitation.
The pair of rolling type ultrasonic welding heads work cooperatively to finish intermittent welding on the battery lug, so that the advantages of small welding spatter, difficult damage to the battery in the welding process, difficult tearing of the lug root part during welding and folding are realized, and the rolling type ultrasonic welding heads are short in interval and difficult to wear.
In various embodiments, the number of weld areas on the welding surface 10 of a rolled ultrasonic horn is determined by the relationship between the diameter of the horn, the width of the tab, and the length of the weld, and thus the welding surface 10 may have one or more identical or different textures.
In one embodiment, if only one welding area is arranged on the rolling type ultrasonic welding head, a plurality of pairs of welding heads can be matched for use, and the welding areas on each pair of welding heads can adopt the same texture or different textures so as to adapt to different welding requirements of multiple points on longer polar lugs and form intermittent welding; in another embodiment, if the rolling type ultrasonic welding head has two identical or different welding areas, the intermittent welding of the longer tab can be completed by only arranging a pair of rolling type ultrasonic welding heads to be matched.
The intermittent length L1 of the rolling type ultrasonic welding head which rotates from the first grain to the second grain in the welding process is equal to the length L1 'from the tab laser welding area to the fixed area on the same battery pole piece, namely L1=L1'; the rolling ultrasonic welding head continues to rotate, and the rotation length L2 of the rolling ultrasonic welding head which is changed back from the second line to the first line is equal to the length equal to L2 'from the adjacent tab laser welding area to the fixed area, namely L2=L2', but the distance L1 'between the same tab and the distance L2' between the adjacent two tabs in the actual product can be equal or not equal, so that the length L1 on the welding head is not necessarily equal to L2, but is matched with the size of the actual product.
In some embodiments, the rolling type ultrasonic welding head can also have 3 or more different welding areas, and the interval length between two adjacent welding areas is matched with the interval between two adjacent welding points to be welded on the tab; likewise, the length of revolution between the first and last weld areas on the bond head also matches the bond pad spacing between adjacent tabs.
Referring to fig. 4 and 5, in one embodiment, the welding surface 10 of the welding head is provided with a continuous weld area having a texture formed thereon, and the texture may be at least one of a etched texture 101, a diamond texture 102, or a hemispherical texture 103. Preferably, the texture of the welding area is corrosion texture 101.
In some embodiments, when welding is performed, a welding head with a circle of continuous welding areas on the welding surface 10 is used for welding, the welding areas on the pair of welding discs 1 are pressed tightly in a collision mode and rotate, when the welding areas rotate to the area needing to be welded, after ultrasonic waves are sent, the area is welded, when the welding areas rotate to the middle interval area, the ultrasonic waves are stopped from being sent, and the current area is not welded, so that intermittent welding of battery lugs is realized.
In some embodiments, when welding is performed, a welding head with a circle of continuous welding areas on the welding surface 10 is used for welding, the welding surfaces 10 on a pair of welding disks 1 rotate simultaneously and ultrasonic signals are continuously sent, when the welding disks 1 rotate to the areas needing to be welded, the welding areas on the welding disks 1 are pressed tightly in a collision mode, the areas are welded, when the welding disks 1 rotate to the middle interval areas, the current areas are not welded, and therefore intermittent welding of battery lugs is achieved.
Two circles of chamfers 11 are further arranged on the outer circumference of the welding disc 1, and the two chamfers 11 are respectively arranged on two sides of the welding surface 10. When the welding surface 10 is used for welding, the chamfers 11 at the two ends are used for protecting objects to be welded, preventing the objects to be welded, such as lugs, from being extruded and cut off, and improving the welding quality.
The rolling type ultrasonic welding head further comprises a transition rod 3, the transition rod 3 is a cylindrical rod positioned between the welding disc 1 and the connecting rod 4, and the diameter of the connecting rod 4 is smaller than that of the welding disc 1 and that of the connecting rod 4. Preferably, the connection surface of the transition rod 3 and the welding disk 1 is an arc surface, and the connection surface of the transition rod 3 and the connecting rod 4 is an inclined surface.
As shown in fig. 3, the rolled ultrasonic welding head further comprises a protection section 2, wherein the protection section 2 is a frustum-shaped bulge positioned on one side of the welding disk 1 away from the connecting rod 4, and the diameter of the protection section is smaller than that of the welding disk 1. The protection section 2 effectively protects the welding surface 10 from being damaged by knocks in the process of carrying, placing or moving.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A rolled ultrasonic horn comprising:
a welding disk including a welding surface provided on an outer circumference;
one end of the connecting rod is fixedly connected with the welding disc;
the welding device is characterized in that a convex welding area is arranged on the welding surface, and the length of the welding area is smaller than the circumference of the welding surface.
2. The rolled ultrasonic horn of claim 1, wherein the weld zone comprises at least one of a corrosion pattern, a diamond pattern, or a hemispherical pattern.
3. The rolled ultrasonic horn of claim 2 wherein there are a plurality of said weld zones, and a spacing zone exists between adjacent two of said weld zones.
4. A rolled ultrasonic horn according to claim 3, wherein the spacing region is defined by two adjacent weld regions and a weld face, and is arranged in a concave configuration with a height difference from the weld regions.
5. The rolling ultrasonic horn according to claim 1, characterized in that the outer circumference of the welding disc (1) is further provided with two circles of chamfers, which chamfers are located on both sides of the welding surface.
6. The rolled ultrasonic horn of claim 1 further comprising a guard section, the guard section being a protrusion on a side of the weld plate remote from the connecting rod.
7. The rolled ultrasonic horn of claim 6, wherein the protrusions are provided in a circular truncated cone shape and the protrusions are coaxial with the weld plate.
8. The rolled ultrasonic horn of claim 1 further comprising a transition bar, one end of the transition bar being connected to the connecting bar, the other end of the transition bar being connected to the weld plate and the junction transition bar Zhou Cemian being cambered.
9. An ultrasonic seam welder comprising a rolled ultrasonic horn as claimed in any one of claims 1 to 8.
10. The ultrasonic seam welder of claim 9, comprising at least one pair of the rolled ultrasonic horns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223362212.3U CN219093952U (en) | 2022-12-12 | 2022-12-12 | Rolling type ultrasonic welding head and ultrasonic seam welder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223362212.3U CN219093952U (en) | 2022-12-12 | 2022-12-12 | Rolling type ultrasonic welding head and ultrasonic seam welder |
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| Publication Number | Publication Date |
|---|---|
| CN219093952U true CN219093952U (en) | 2023-05-30 |
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|---|---|---|---|
| CN202223362212.3U Active CN219093952U (en) | 2022-12-12 | 2022-12-12 | Rolling type ultrasonic welding head and ultrasonic seam welder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118559276A (en) * | 2024-08-02 | 2024-08-30 | 武汉杭久电气有限公司 | Fuse welding device |
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2022
- 2022-12-12 CN CN202223362212.3U patent/CN219093952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118559276A (en) * | 2024-08-02 | 2024-08-30 | 武汉杭久电气有限公司 | Fuse welding device |
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