CN220050419U - Battery cell welding equipment - Google Patents
Battery cell welding equipment Download PDFInfo
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- CN220050419U CN220050419U CN202321619528.8U CN202321619528U CN220050419U CN 220050419 U CN220050419 U CN 220050419U CN 202321619528 U CN202321619528 U CN 202321619528U CN 220050419 U CN220050419 U CN 220050419U
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- 238000003466 welding Methods 0.000 title claims abstract description 145
- 238000012545 processing Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model relates to a battery cell welding device, which relates to the field of battery processing devices, and comprises a ranging component, a servo component and a laser welding component; the distance measuring assembly is used for measuring a first distance, and the first distance is the distance between the distance measuring assembly and the tab to be welded and the rotating sheet; the servo assembly drives the ranging assembly to move in a first plane, the first plane is a plane vertical to a first direction, and the first direction is the ranging direction of the ranging assembly; the ranging assembly measures a first distance at a plurality of locations on a first plane; the laser welding assembly is connected with the ranging assembly through signals, the laser welding assembly is used for receiving data of a plurality of first distances, and the laser welding assembly is used for adjusting defocusing amount between the electrode lugs to be welded and the switching pieces and for welding and fixing the electrode lugs and the switching pieces. The utility model has the effect of accurately adjusting the defocusing amount of the laser welding assembly and improving the welding quality by transmitting a plurality of first distances to the laser welding assembly.
Description
Technical Field
The utility model relates to the field of battery processing equipment, in particular to electric core welding equipment.
Background
In the current power battery production process, laser welding equipment is used for welding and fixing the lug and the adapter plate of the battery.
In general, the lug and the adapter plate are fixed on the jig, so that the relative position between the lug and the adapter plate is kept stable; after the fixture is fixed, the relative position between the welding head of the laser welding equipment and the fixture is adjusted to a set position, and the welding fixation of the lug and the switching piece is carried out.
When the tab is welded with the adapter plate, the condition of cold joint or spattering of welding slag can occur.
Disclosure of Invention
The utility model provides a battery cell welding device which has the function of improving quality when a tab and a switching sheet are welded by laser.
The utility model provides a cell welding device which comprises a ranging component, a servo component and a laser welding component; the distance measuring assembly is used for measuring a first distance, and the first distance is the distance between the distance measuring assembly and the tab to be welded and the rotating sheet; the servo assembly drives the ranging assembly to move in a first plane, the first plane is a plane vertical to a first direction, and the first direction is the ranging direction of the ranging assembly; the ranging assembly measures a first distance at a plurality of locations on a first plane; the laser welding assembly is connected with the ranging assembly through signals, the laser welding assembly is used for receiving data of a plurality of first distances, and the laser welding assembly is used for adjusting defocusing amount between the electrode lugs to be welded and the switching pieces and for welding and fixing the electrode lugs and the switching pieces.
In the technical scheme, the distance measuring assembly is driven to move in the first plane through the servo mechanism, the distance measuring assembly measures a plurality of first distances, and after the first distances are transmitted to the laser welding assembly, the laser welding assembly correspondingly adjusts the defocus amount between the lug to be welded and the switching sheet, the laser welding assembly performs welding of the lug and the switching sheet, so that the condition of cold joint or welding slag splashing during welding is reduced, and the welding quality is improved.
Drawings
FIG. 1 is a schematic overall construction of an embodiment;
FIG. 2 is a schematic diagram showing the relative positions of the ranging component, the servo component and the tab in a standard state according to one embodiment;
FIG. 3 is a schematic diagram showing the relative positions of the ranging component, the servo component and the tab in actual states according to one embodiment;
fig. 4 is a schematic structural diagram of a tab and tab stack in an embodiment.
1. A ranging assembly; 2. a servo assembly; 21. a first servo mechanism; 22. a second servo mechanism; 3. a laser welding assembly; 31. welding the assembly; 32. a third guide rail; 41. a first guide rail; 42. a second guide rail; 5. an electrode sheet; 51. a tab; 6. a cover plate; 61. and a switching piece.
Detailed Description
The utility model is further described in detail below by means of the figures and examples. The features and advantages of the present utility model will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, the technical features described below in the different embodiments of the present utility model may be combined with each other as long as they do not collide with each other.
The embodiment of the utility model discloses a battery cell welding device which is used for welding a tab and a switching piece. The electrode tab and the switching piece on the cover plate of the electrode tab are fixed on the jig, the electrode tab and the switching piece are stacked and placed on the jig, and the jig is used for fixing the electrode tab and the switching piece relatively.
And placing the jig with the tab and the switching piece at a set position, and performing welding fixation of the tab and the switching piece by using a cell welding device.
Referring to fig. 1, the cell welding apparatus includes a ranging assembly 1, a servo assembly 2, and a laser welding assembly 3.
The distance measuring assembly 1 is used for measuring a first distance, and the first distance is a distance between the distance measuring assembly 1 and the tab 51 to be welded and the adapter piece 61. Specifically, the distance measuring component 1 is a laser displacement sensor.
For convenience of description, a first plane, a first direction, a second direction and a third direction are defined, wherein the first direction is a ranging direction of the ranging assembly 1, and is also a spacing direction between the ranging assembly 1 and the tab 51 to be welded and the adapter piece 61, the first plane is a plane perpendicular to the first direction, the second direction is one direction in the first plane, in this embodiment, the second direction is a horizontal direction, and the third direction is a direction intersecting the second direction in the first plane, in this embodiment, the second direction is a vertical direction. In the drawings, a first direction is denoted as X direction, a second direction is denoted as Y direction, and a third direction is denoted as Z direction.
The servo assembly 2 drives the distance measuring assembly 1 to move in a first plane; the distance measuring assembly 1 measures a first distance at a plurality of positions on a first plane.
Specifically, the distance measuring assembly 1 measures a first distance at a plurality of location points in a first plane. In this embodiment, two welding seams are formed between the tab 51 and the adapter piece 61, and in the same welding seam, the gap between any two adjacent position points measured by the ranging assembly 1 is not more than 1 millimeter.
The laser welding assembly 3 is in signal connection with the distance measuring assembly 1, the laser welding assembly 3 is used for receiving a plurality of data of first distances, the laser welding assembly 3 adjusts defocusing amount between the electrode lug 51 to be welded and the adapter piece 61, and the laser welding assembly is used for welding and fixing the electrode lug 51 and the adapter piece 61.
Specifically, the laser welding assembly 3 is an existing laser welding assembly, the laser welding assembly 3 is connected with the ranging assembly 1 through a communication cable signal, the laser welding assembly 3 can adjust the defocusing amount, and the laser welding assembly 3 sends out the laser welding tab 51 and the adapter piece 61. The defocus amount is the distance between the laser focus and the active substance.
When in use, the first piece of the tab 51 and the switching piece 61 is welded, specifically, the fixture for fixing the tab 51 and the switching piece 61 is fixed, and the distance between the laser welding assembly 3 and the fixture is adjusted, so that the distance measuring assembly 1 is not required to measure the first distance. After the distance between the laser welding assembly 3 and the jig is accurately adjusted, the tab 51 and the adapter piece 61 are welded by using the laser welding assembly 3, so that the first piece welding of the tab 51 and the adapter piece 61 is realized. After the first part is welded, the welding quality of the detection lug 51 and the adapter piece 61 is qualified, and the positions of the jig and the laser welding assembly 3 are accurate at the moment, so that subsequent welding operation is performed.
After the position of the next jig is fixed and the position of the last jig is fixed, the servo assembly 2 drives the ranging assembly 1 to move in the first plane, the ranging assembly 1 measures a plurality of first distances, the ranging assembly 1 transmits the measured first distances to the laser welding assembly 3, after the laser welding assembly 3 correspondingly adjusts, the overall defocusing amount of the to-be-welded area of the tab 51 and the adapter piece 61 meets the design requirement, and then the tab 51 and the adapter piece 61 are welded by using laser.
Referring to fig. 2, in the designed state, after the jig is placed at the set position, the stacking portion of the tab 51 and the tab 61 is a flat area, and the distance between the laser welding assembly 3 and the tab 51 to be welded and the tab 61 is the set distance.
Referring to fig. 3, in the production process, after the jig is placed at the set position, although the distance between the laser welding assembly 3 and the tab 51 to be welded and the adapter piece 61 is theoretically the set distance, due to the dimensional error of the jig, the dimensional error of the tab 51 and the adapter piece 61, and the error of the connection between the tab 51 and the adapter piece 61 on the jig, there is a deviation in the dimensions of different positions of the welding area between the laser welding assembly 3 and the tab 51 to be welded and the adapter piece 61, so that different positions of the welding area have different defocus amounts, and the defocus amount fluctuates greatly. When the defocus amount is too large, the dummy welding between the tab 51 and the adapter piece 61 is caused, and when the defocus amount is too small, the welding slag is splashed, so that the welding quality between the tab 51 and the adapter piece 61 is affected.
Referring to fig. 1, in the present embodiment, a plurality of first distances are measured by using the ranging assembly 1, and the first distances are transmitted to the laser welding assembly 3, so that the laser welding assembly 3 adjusts to the defocus amount between the tab 51 and the adapter piece 61, thereby satisfying the design requirement of the defocus amount of the whole welding area, and improving the welding quality between the tab 51 and the adapter piece 61 and the yield.
Referring to fig. 1, as an alternative, the laser welding assembly 3 includes a control member and a welding assembly 31; wherein the control member is in signal connection with the distance measuring assembly 1 and the welding assembly 31.
In particular, the control element is a control element in an existing laser welding assembly 3. The control piece is connected with the ranging component 1 by using an external communication cable signal, the control piece is connected with the welding component 31 by using the communication cable signal of the laser welding component 3, and the control piece can transmit signals with the ranging component 1 and the welding component 31.
The control member is configured to receive the first distances measured by the ranging assembly 1, calculate differences between the first distances and the set distances, and send corresponding adjustment signals to the welding assembly 31 according to the differences.
Specifically, the control member receives the first distances measured by the ranging assembly 1, and calculates the difference between the first distances and the set distances to determine the surface states and the inclination states of the tab 51 and the rotating tab 61 to be welded at this time.
The more the number of the first distances is, the more accurate the surface states and the inclination states of the tabs 51 and the rotating plates 61 to be welded are, and the control member correspondingly sends out corresponding adjusting signals according to the plurality of difference values, wherein the adjusting signals are signals of the existing laser welding assembly 3. The present solution only relates to an improvement of the way in which the first plurality of distances is obtained, and not to an improvement of the prior art in which the control member sends a corresponding adjustment signal to the welding assembly 31.
The welding assembly 31 is used for adjusting the defocus amount between the welding assembly 31 and the tab 51 and the adapter piece 61 to be welded according to the adjustment signal, and for welding and fixing the tab 51 and the adapter piece 61.
Specifically, the welding assembly 31 includes a welding head, and after receiving a corresponding adjustment signal, the welding assembly 31 controls the welding head to adjust to the defocus amount between the tab 51 to be welded and the adapter piece 61. The adjustment of the defocus amount of the welding unit 31 is a conventional control method in the welding unit 31.
Referring to fig. 1, as an alternative, the welding assembly 31 includes a galvanometer capable of swinging a certain angle for adjusting a laser focus, and the welding assembly 31 adjusts an angle of the galvanometer according to the adjustment signal.
Specifically, the laser welding assembly 3 includes a plurality of galvanometers, and by adjusting the angles of the plurality of galvanometers, the defocus amount between the welding assembly 31 and the tab 51 to be welded and the adapter piece 61 can be adjusted. The laser welding assembly 3 has a conventional control mode, and when the welding assembly 31 receives the adjustment signal, the angles of the vibrating mirrors are correspondingly adjusted.
Referring to fig. 3, as an alternative, the distance measuring assembly 1 measures a plurality of opposite end positions in a welding zone, which is a region where the tab 51 to be welded is welded with the relay tab 61.
Referring to fig. 4, specifically, the tab 51 of the electrode tab 5 and the transfer tab 61 on the cover plate 6 are fixed and stacked on the jig, and the area where the tab and the transfer tab are stacked along the first direction is a welding area, and the welding area includes two welding seams, and the opposite end positions of the two welding seams include four positions of the two ends of the two welding seams. The weld is indicated in the drawing by a dashed box and the four end positions are indicated in the drawing by stippled boxes.
Referring to fig. 3, the difference between the defocus amounts of the welding areas of the tab 51 and the adapter piece 61 to be welded is generally the largest at the end, the ranging assembly 1 measures the end positions of the welding areas, the data of a plurality of first distances are more comprehensive and accurate, the laser welding assembly 3 adjusts the defocus amounts more accurately, and the overall welding quality of the welded tab 51 and the adapter piece 61 after welding is improved.
Referring to fig. 1, as an alternative, the servo assembly 2 includes a first servo 21 and a second servo 22; wherein the first servo mechanism 21 drives the distance measuring assembly 1 to move along the second direction; the second servo mechanism 22 drives the distance measuring assembly 1 to move along the third direction; the third direction and the second direction are two directions which are positioned in the first plane and are intersected.
Specifically, the first servo mechanism 21 and the second servo mechanism 22 respectively drive the distance measuring assembly 1 to move along two intersecting directions, and the distance measuring assembly 1 can move to any position of the first plane to detect a plurality of first distances in different directions. The first servomechanism 21 and the second servomechanism 22 are each, for example, air cylinders. Alternatively, the first servo 21 and the second servo 22 are linear stepper motors or hydraulic cylinders.
The first servo mechanism 21 drives the distance measuring assembly 1 to move along the second direction, the second servo mechanism 22 drives the distance measuring assembly 1 to move along the third direction, and the first distances measured by the distance measuring assembly 1 can further represent the whole leveling or tilting condition of the welding area between the tab 51 and the adapter piece 61. Thereby enabling the laser welding assembly 3 to more accurately adjust the defocus amount according to the plurality of first distances.
Referring to fig. 1, as an alternative, a first servo 21 is connected to the distance measuring assembly 1; the second servo 22 drives the first servo 21 and the distance measuring assembly 1 to move synchronously in the third direction.
Specifically, the servo assembly 2 further includes a sliding seat, the first servo mechanism 21 and the ranging assembly 1 are connected to the sliding seat, and the first servo mechanism 21 drives the ranging assembly 1 to move along the second direction on the sliding seat. The cylinder body of the first servo mechanism 21 is fixed on the sliding seat, and a piston rod of the first servo mechanism 21 is fixedly connected with the distance measuring assembly 1.
The second servo mechanism 22 drives the sliding seat to move, a piston rod of the second servo mechanism 22 is fixedly connected with the sliding seat, and the second servo mechanism 22 drives the sliding seat, the first servo mechanism 21 and the ranging assembly 1 to synchronously move along a third direction.
The first servo drives the distance measuring assembly 1 to move along the second direction, and the second servo mechanism 22 drives the distance measuring assembly 1 to move along the third direction, so that the servo mechanism drives the distance measuring assembly 1 to move in the first plane.
Referring to fig. 1, as an alternative, the second servo 22 and the first servo 21 are in signal connection with the control member; when the control piece controls the second servo mechanism 22 to operate, the control piece controls the first servo mechanism 21 to be closed; the control member controls the second servo 22 to be turned off when controlling the first servo 21 to operate.
When the first servo mechanism 21 drives the distance measuring assembly 1 to move, the second servo mechanism 22 is closed; the first servo 21 is closed when the second servo 22 drives the distance measuring assembly 1 to move.
When the servo mechanism drives the distance measuring assembly 1 to move, error accumulation caused by synchronous movement of the first servo mechanism 21 and the second servo mechanism 22 can be avoided, so that accuracy of the first distance measured by the distance measuring assembly 1 is improved.
Referring to fig. 1, as an alternative, a first rail 41 and a second rail 42 are further included, and the ranging assembly 1 is slidably mounted on the first rail 41 in the second direction. The distance measuring assembly 1 and the first servomechanism 21 are mounted slidingly in a third direction on the second rail 42.
Specifically, the first guide rail 41 is fixed on the sliding seat, the first guide rail 41 is arranged along the second direction, the first sliding block is fixed on the ranging component 1, and the second sliding block is assembled on the first guide rail 41 in a sliding manner along the second direction.
The servo assembly 2 further comprises a fixed seat, the cylinder body of the second servo mechanism 22 is fixed on the fixed seat, the second guide rail 42 is arranged along the third direction, a second sliding block is fixed on the sliding seat, and the second sliding block is assembled on the second guide rail 42 in a sliding manner along the third direction.
The first guide rail 41 can improve the stability of the ranging assembly 1 sliding along the second direction, the second guide rail 42 can improve the stability of the ranging assembly 1 sliding along the third direction, and the more stable the ranging assembly 1 slides, the more accurate the data of a plurality of first distances measured by the ranging assembly 1.
Referring to fig. 1, as an alternative, the laser welding assembly 3 further includes a third rail 32; the welding assembly 31 is slidably mounted on the third rail 32 in the first direction. The servo assembly 2 connects the distance measuring assembly 1 and the welding assembly 31, the servo assembly 2 and the distance measuring assembly 1 move synchronously in the first direction.
Specifically, the third guide rails 32 are provided with two third slide blocks spaced along the second direction, and the welding assembly 31 is fixed with two groups of third slide blocks, and the two groups of slide blocks are respectively and correspondingly slidably assembled on the two third guide rails 32.
The laser welding assembly 3 further comprises a third servo mechanism which drives the welding assembly 31 to slide in the first direction and lock in a specified position.
When the first member is welded, the distance between the laser welding assembly 3 and the jig is adjusted first, and in general, the position of the jig is a fixed set position, and only the position of the welding assembly 31 in the laser welding assembly 3 is adjusted along the first direction. The third servo mechanism drives the welding assembly 31 to move along the first direction, and locks and fixes the welding assembly 31 after the welding assembly 31 moves to a designated position.
The fixing base of the servo assembly 2 is fixedly connected with the welding assembly 31, when the welding assembly 31 moves along the first direction, the servo assembly 2 and the ranging assembly 1 synchronously move along the first direction, a gap between the welding assembly 31 and the ranging assembly 1 is not influenced by the movement of the welding assembly 31 along the first direction, and the first distance measured by the ranging assembly 1 is more accurate.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc. are directions or positional relationships based on the operation state of the present utility model are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically defined and limited. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The utility model has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the utility model can be subjected to various substitutions and improvements, and all fall within the protection scope of the utility model.
Claims (10)
1. The battery cell welding equipment is characterized by comprising a ranging component, a servo component and a laser welding component;
the distance measuring assembly is used for measuring a first distance, and the first distance is the distance between the distance measuring assembly and the tab to be welded and the rotating sheet;
the servo assembly drives the ranging assembly to move in a first plane, wherein the first plane is a plane vertical to a first direction, and the first direction is the ranging direction of the ranging assembly;
the ranging assembly measures the first distance at a plurality of locations on the first plane;
the laser welding assembly is in signal connection with the distance measuring assembly, the laser welding assembly is used for receiving a plurality of data of the first distance, the laser welding assembly adjusts the defocus amount between the tab to be welded and the adapter plate, and is used for welding and fixing the tab and the adapter plate.
2. The die bonding apparatus of claim 1, wherein the laser bonding assembly comprises a control and a bonding assembly; wherein,
the control piece is in signal connection with the ranging component and the welding component;
the control part is used for receiving a plurality of first distances measured by the distance measuring assembly, calculating the difference values of the first distances and the set distances, and sending corresponding adjusting signals to the welding assembly according to the difference values;
the welding assembly is used for adjusting the defocusing amount between the welding assembly and the lug to be welded and the adapter piece according to the adjusting signal, and is used for welding and fixing the lug and the adapter piece.
3. The cell welding apparatus of claim 1, wherein the distance measuring assembly measures a plurality of opposing end positions in a weld zone, the weld zone being an area where the tab to be welded and the tab to be welded are welded.
4. The die bonding apparatus of claim 1, wherein the servo assembly comprises a first servo and a second servo; wherein,
the first servo mechanism drives the distance measuring assembly to move along a second direction; the second servo mechanism drives the distance measuring assembly to move along a third direction; the third direction and the second direction are two directions which are positioned in the first plane and are intersected.
5. The die bonding apparatus according to claim 4, wherein the first servo is coupled to the distance measuring assembly;
the second servo mechanism drives the first servo mechanism and the ranging assembly to synchronously move along the third direction.
6. The die-bonding apparatus according to claim 5, further comprising a first rail and a second rail, the distance-measuring assembly slidably mounted on the first rail along the second direction;
the distance measuring assembly and the first servo mechanism are assembled on the second guide rail in a sliding mode along a third direction.
7. The die bonding apparatus of claim 4, wherein the laser bonding assembly comprises a control that controls the first servo to close when the second servo is controlled to operate;
and when the control piece controls the first servo mechanism to operate, the control piece controls the second servo mechanism to be closed.
8. The die-bonding apparatus according to claim 4, wherein the second direction is a horizontal direction and the third direction is a vertical direction.
9. The cell welding apparatus of claim 2, wherein the welding assembly includes a galvanometer capable of swinging through an angle for adjusting a laser focus, the welding assembly correspondingly adjusting an angle of the galvanometer according to the adjustment signal.
10. The die bonding apparatus of claim 1, wherein the laser bonding assembly further comprises a third rail;
the welding assembly is assembled on the third guide rail in a sliding manner along a first direction;
the servo assembly is connected with the ranging assembly and the welding assembly, the servo assembly and the ranging assembly synchronously move along a first direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321619528.8U CN220050419U (en) | 2023-06-25 | 2023-06-25 | Battery cell welding equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321619528.8U CN220050419U (en) | 2023-06-25 | 2023-06-25 | Battery cell welding equipment |
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| CN220050419U true CN220050419U (en) | 2023-11-21 |
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| CN202321619528.8U Active CN220050419U (en) | 2023-06-25 | 2023-06-25 | Battery cell welding equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117961285A (en) * | 2024-03-29 | 2024-05-03 | 安徽大学 | Multi-functional electronic ear tag welding set for ox |
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2023
- 2023-06-25 CN CN202321619528.8U patent/CN220050419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117961285A (en) * | 2024-03-29 | 2024-05-03 | 安徽大学 | Multi-functional electronic ear tag welding set for ox |
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