CN220862994U - Welding mechanism controlled by tension - Google Patents
Welding mechanism controlled by tension Download PDFInfo
- Publication number
- CN220862994U CN220862994U CN202322477003.1U CN202322477003U CN220862994U CN 220862994 U CN220862994 U CN 220862994U CN 202322477003 U CN202322477003 U CN 202322477003U CN 220862994 U CN220862994 U CN 220862994U
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- CN
- China
- Prior art keywords
- tension
- foil
- welding
- welding mechanism
- current collector
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- 230000007246 mechanism Effects 0.000 title claims abstract description 126
- 238000003466 welding Methods 0.000 title claims abstract description 118
- 239000011888 foil Substances 0.000 claims abstract description 75
- 239000002131 composite material Substances 0.000 claims abstract description 58
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 230000001502 supplementing effect Effects 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001668 ameliorated effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a tension control welding mechanism which is applied to a composite current collector tab welding machine and comprises a welding mechanism, an active traction mechanism and a tension swing rod mechanism arranged between the welding mechanism and the active traction mechanism, wherein after a first foil, a composite current collector and a second foil are welded on two sides of the welding mechanism in a rolling way, a two-sided foil supplementing composite current collector is formed and sequentially passes through the tension swing rod mechanism and the active traction mechanism. The tension swing roller mechanism is used for controlling the tension of the film between the welding mechanism and the active traction mechanism, so that the film between the welding mechanism and the active traction mechanism is prevented from being too loose or too tight after the error of power is too large.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a tension control welding mechanism.
Background
In the production process of lithium batteries, a metal foil is generally selected as a current collector, wherein an aluminum foil is selected as a positive current collector, and a copper foil is selected as a negative current collector. In order to improve the energy density and safety of a battery, a composite current collector obtained by compositing a polymer film and a metal plating layer is attracting attention. However, since the composite current collector includes an insulating layer formed of a polymer material, the tab of the composite current collector cannot transmit the current in the cell to the electrode terminal, and thus it is necessary to transfer the tab of the composite current collector with a foil (aluminum foil or copper foil) so as to transmit the current in the cell.
The Chinese patent with publication number CN218732334U discloses a composite current collector transfer welding integrated device, which comprises a composite current collector unreeling frame for unreeling the composite current collector; the first foil unreeling frame is used for unreeling the first foil; the second foil unreeling frame is used for unreeling the second foil; the welding mechanism is used for welding the first foil and the second foil on two sides of the composite current collector to form a product; the rolling frame is used for rolling the product; the device comprises a current collector tension swing roller positioned between a composite current collector unreeling frame and a composite current collector rectifying device, a conveying pair roller positioned between a traction pair roller and a welding mechanism, a flaw detector positioned between the welding mechanism and a reeling rectifying device, and a reeling tension mechanism positioned between the reeling rectifying device and a reeling frame. The transfer welding integrated device for the composite current collector realizes continuous welding production of the composite current collector and improves production efficiency.
However, in the composite collector transfer welding integrated device, as the welding mechanism and the conveying pair roller of the composite collector transfer welding integrated device have power, certain errors inevitably exist between the two power, and the errors are possibly small at the beginning and are in a receivable range, but the errors of the two power become larger and larger along with the lapse of working time, so that the film feeding speed of the welding mechanism and the film feeding speed of the conveying pair roller are different, and the film between the welding mechanism and the conveying pair roller is too loose to influence the welding quality, or is too tight to stretch the film.
The above drawbacks are to be ameliorated.
Disclosure of utility model
In order to solve the problem that in the prior art, a composite current collector transfer welding integrated device has the problem that as working time passes, the power error between a welding mechanism and a conveying pair roller is larger and larger, so that a film between the welding mechanism and the conveying pair roller is gradually loosened or tightened, the utility model provides a tension control welding mechanism.
The technical scheme of the utility model is as follows:
The utility model provides a tension control's welding mechanism, is applied to compound current collector utmost point ear welding machine, includes welding mechanism, initiative traction mechanism, and set up welding mechanism with tension pendulum rod mechanism between the initiative traction mechanism, first foil, compound current collector and second foil are in after the two sides roll welding in the welding mechanism, form two-sided foil compensating compound current collector and pass through in proper order tension pendulum rod mechanism with initiative traction mechanism.
According to the tension control welding mechanism, the tension swing rod mechanism comprises a driving motor, a swing rod and two tension rollers respectively arranged at two ends of the swing rod, a driving shaft of the driving motor is connected with the middle part of the swing rod and drives the swing rod to rotate, and the two-sided foil supplementing composite current collector crosses the two tension rollers.
Further, the weight of the two tension rollers is the same.
According to the tension control welding mechanism, the driving traction mechanism comprises two conveying pair rollers which are arranged up and down, and at least one of the two conveying pair rollers is a driving roller.
According to the tension control welding mechanism, the front end of the welding mechanism is provided with the first traction roller for drawing the first foil and the second traction roller for drawing the composite current collector and the second foil.
According to the tension control welding mechanism, the first roller is arranged between the welding mechanism and the tension swing rod mechanism.
According to the tension control welding mechanism, a second roller is arranged between the tension swing rod mechanism and the active traction mechanism.
According to the tension control welding mechanism of the scheme, the welding mechanism is an ultrasonic rolling welding mechanism.
Further, the ultrasonic rolling welding mechanism comprises an upper rolling welding assembly and a lower welding assembly, and the first foil, the composite current collector and the second foil pass through between the upper rolling welding assembly and the lower welding assembly.
Further, the wrap angle of the first foil, the composite current collector and the second foil passing through the lower welding component is 0-180 degrees.
Compared with the prior art, the utility model has the beneficial effects that:
According to the tension control welding mechanism provided by the utility model, the tension swing roller mechanism is arranged between the welding mechanism and the active traction mechanism, and the tension of the film between the welding mechanism and the active traction mechanism is controlled through the tension swing roller mechanism, so that the phenomenon that the film is too loose or too tight due to overlarge power error is avoided, and the welding quality is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic structural view of a tension swing roller mechanism in the present utility model.
In the drawing of the figure,
1. A welding mechanism; 101. an upper roll welding assembly; 102. a lower welding assembly; 2. an active traction mechanism; 201. conveying a pair of rollers; 3. a tension swing roller mechanism; 301. a driving motor; 302. swing rod; 303. a tension roller; 4. a first foil; 5. a composite current collector; 6. a second foil; 7. two-sided foil-supplementing composite current collector; 8. a first pull roll; 9. a second traction roller; 10. a first pass roller; 11. and (5) passing through a roller.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, it is stated that the embodiments described below are only for explaining the present utility model and are not intended to limit the present utility model.
It should be noted that, the terms "mounted," "configured," "connected," "fixed," and the like should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The direction or position relationship is based on the direction or position relationship shown in the drawings, or the direction or position relationship which is commonly put when the application product is used, or the direction or position relationship which is commonly understood by those skilled in the art, or the direction or position relationship which is commonly put when the application product is used, only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the device or element in question must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the application. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features.
Referring to fig. 1, an embodiment of the utility model provides a welding mechanism with tension control, which is applied to a welding machine for a composite current collector tab, and comprises a welding mechanism 1, an active traction mechanism 2, and a tension swing rod mechanism 3 arranged between the welding mechanism 1 and the active traction mechanism 2. During operation, the first foil 4, the composite current collector 5 and the second foil 6 are subjected to two-sided rolling welding through the welding mechanism 1, the first foil 4 and the second foil 6 are respectively welded on two sides of the lug end of the composite current collector 5, the first foil 4 and the second foil 6 can be used as the lugs of the composite current collector 5, the two-sided foil supplementing composite current collector 7 is formed and sequentially passes through the tension swing rod mechanism 3 and the active traction mechanism 2, and the active traction mechanism 2 provides power for movement of the two-sided foil supplementing composite current collector 7.
Because the welding mechanism 1 and the active traction mechanism 2 both have power, and certain errors exist between the two power, the errors can be initially in a receivable range, but the errors of the two power become larger and larger along with the lapse of working time, so that the film feeding speed of the welding mechanism 1 is different from the film feeding speed of the active traction mechanism 2, and the film between the two power (namely the two-sided foil-supplementing composite current collector 7) is too loose to influence the welding quality or is too tight to stretch the film. Therefore, the tension pendulum roller mechanism 3 is arranged between the welding mechanism 1 and the active traction mechanism 2, and the tension of the film between the welding mechanism 1 and the active traction mechanism 2 is controlled through the tension pendulum roller mechanism 3, so that the film between the welding mechanism 1 and the active traction mechanism 2 is prevented from being too loose or too tight after the error of power is too large.
Referring to fig. 2, in one embodiment, the tension swing rod mechanism 3 includes a driving motor 301, a swing rod 302, and two tension rollers 303 respectively disposed at two ends of the swing rod 302, a driving shaft of the driving motor 301 is connected with a middle portion of the swing rod 302 and drives the swing rod 302 to rotate, and the two-sided foil-compensating composite current collector 7 crosses the two tension rollers 303, so that the tension swing rod mechanism 3 can realize tension of the double-stroke adjustment film, and has higher sensitivity. Meanwhile, the weight of the two tension rollers 303 is the same, so that the control of the driving motor 301 is more stable and the response is faster.
Referring to fig. 1, in one embodiment, the active traction mechanism 2 includes two conveying pairs of rollers 201 disposed one above the other, at least one of the two conveying pairs of rollers 201 being a driving roller for powering the movement of the two-sided foil-compensating composite current collector 7.
Referring to fig. 1, in one embodiment, the front end of the welding mechanism 1 is provided with a first pulling roll 8 for pulling the first foil 4, and a second pulling roll 9 for pulling the composite current collector 5 and the second foil 6. By providing the first traction roller 8 and the second traction roller 9, the first foil 4, the composite current collector 5 and the second foil 6 can be smoothly drawn into the welding mechanism 1 for double-sided rolling welding.
Referring to fig. 1, in one embodiment, a first passing roller 10 is disposed between the welding mechanism 1 and the tension swing rod mechanism 3, a second passing roller 11 is disposed between the tension swing rod mechanism 3 and the active traction mechanism 2, and the first passing roller 10 and the second passing roller 11 are used for changing the film feeding path of the two-sided foil-compensating composite current collector 7 so that the two-sided foil-compensating composite current collector 7 crosses over the two tension rollers 303.
Referring to fig. 1, in one embodiment, the welding mechanism 1 is an ultrasonic rolling welding mechanism, and the ultrasonic rolling welding mechanism includes an upper rolling welding assembly 101 and a lower welding assembly 102, and the first foil 4, the composite current collector 5, and the second foil 6 pass between the upper rolling welding assembly 101 and the lower welding assembly 102. When the first foil 4, the composite current collector 5 and the second foil 6 pass through the space between the upper roll welding assembly 101 and the lower roll welding assembly 102, two-sided roll welding is carried out under the action of the upper roll welding assembly 101 and the lower roll welding assembly 102, and the first foil 4 and the second foil 6 are respectively welded on two sides of the lug end of the composite current collector 5, so that the first foil 4 and the second foil 6 can be used as the lugs of the composite current collector 5 to form the two-sided foil supplementing composite current collector 7. The first foil 4, the composite current collector 5, and the second foil 6 may horizontally pass through the lower welding component 102, that is, the wrap angles of the first foil 4, the composite current collector 5, and the second foil 6 passing through the lower welding component 102 are 0 °, and may also have a certain wrap angle with the lower welding component 102 when passing through the lower welding component 102, that is, the wrap angles of the first foil 4, the composite current collector 5, and the second foil 6 passing through the lower welding component 102 are greater than 0 °, friction force between the first foil 4, the composite current collector 5, and the second foil 6 and the lower welding component 102 may be increased, so as to avoid the first foil 4, the composite current collector 5, and the second foil 6 from being offset in the welding process, thereby improving welding quality and welding speed, and in order to facilitate transportation of the first foil 4, the composite current collector 5, and the second foil 6, the wrap angles of the first foil 4, the composite current collector 5, and the second foil 6 passing through the lower welding component 102 are not greater than 180 °. Because vibration can be generated when the ultrasonic rolling welding mechanism is used for welding, if the first foil 4, the composite current collector 5 and the second foil 6 do not have wrap angles with the lower welding assembly 102, the friction force born by the first foil 4, the composite current collector 5 and the second foil 6 can be small, and the vibration can lead the first foil 4, the composite current collector 5 and the second foil 6 to deviate, so that the welding quality is affected.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the implementation of the utility model is not limited by the above manner, and it is within the scope of the utility model to apply the inventive concept and technical solution to other situations as long as various improvements made by the inventive concept and technical solution are adopted, or without any improvement.
Claims (10)
1. The welding mechanism is characterized by comprising a welding mechanism, an active traction mechanism and a tension swing rod mechanism arranged between the welding mechanism and the active traction mechanism, wherein after two sides of a first foil, a composite current collector and a second foil in the welding mechanism are welded in a rolling way, a two-sided foil supplementing composite current collector is formed and sequentially passes through the tension swing rod mechanism and the active traction mechanism.
2. The welding mechanism for controlling tension according to claim 1, wherein the tension swing rod mechanism comprises a driving motor, a swing rod and two tension rollers respectively arranged at two ends of the swing rod, a driving shaft of the driving motor is connected with the middle part of the swing rod and drives the swing rod to rotate, and the two-sided foil-supplementing composite current collector crosses the two tension rollers.
3. The tension-controlled welding mechanism of claim 2, wherein the weight of both tension rollers is the same.
4. The tension-controlled welding mechanism of claim 1, wherein the active traction mechanism comprises two conveying pairs of rollers disposed one above the other, at least one of the two conveying pairs being an active roller.
5. The tension-controlled welding mechanism of claim 1, wherein a front end of the welding mechanism is provided with a first pull roll for pulling the first foil and a second pull roll for pulling the composite current collector and the second foil.
6. The tension-controlled welding mechanism of claim 1, wherein a first pass roller is disposed between the welding mechanism and the tension swing link mechanism.
7. The tension-controlled welding mechanism of claim 1, wherein a second pass roller is disposed between the tension swing link mechanism and the active traction mechanism.
8. The tension-controlled welding mechanism of claim 1, wherein the welding mechanism is an ultrasonic roll welding mechanism.
9. The tension-controlled welding mechanism of claim 8, wherein the ultrasonic roll welding mechanism comprises an upper roll welding assembly and a lower weld bearing assembly, the first foil, the composite current collector, and the second foil passing between the upper roll welding assembly and the lower weld bearing assembly.
10. The tension-controlled welding mechanism of claim 9, wherein a wrap angle of the first foil, the composite current collector, and the second foil through the lower weld carrier assembly is 0-180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322477003.1U CN220862994U (en) | 2023-09-12 | 2023-09-12 | Welding mechanism controlled by tension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322477003.1U CN220862994U (en) | 2023-09-12 | 2023-09-12 | Welding mechanism controlled by tension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220862994U true CN220862994U (en) | 2024-04-30 |
Family
ID=90819823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322477003.1U Active CN220862994U (en) | 2023-09-12 | 2023-09-12 | Welding mechanism controlled by tension |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220862994U (en) |
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2023
- 2023-09-12 CN CN202322477003.1U patent/CN220862994U/en active Active
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