CN214921760U - Pressure head of welding fixture - Google Patents
Pressure head of welding fixture Download PDFInfo
- Publication number
- CN214921760U CN214921760U CN202023237806.2U CN202023237806U CN214921760U CN 214921760 U CN214921760 U CN 214921760U CN 202023237806 U CN202023237806 U CN 202023237806U CN 214921760 U CN214921760 U CN 214921760U
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- Prior art keywords
- copper nozzle
- connecting plate
- pressure head
- welding
- ram
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- 238000003466 welding Methods 0.000 title claims abstract description 44
- 229910052802 copper Inorganic materials 0.000 claims abstract description 73
- 239000010949 copper Substances 0.000 claims abstract description 73
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 70
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 19
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 4
- 210000002445 nipple Anatomy 0.000 claims 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Arc Welding In General (AREA)
Abstract
The utility model discloses a welding jig pressure head for with piece welding on the module, include: at least two lower squeeze heads that directly contact and squeeze the sliver; the lower pressure heads are connected to the connecting plate, and a protruding structure located between every two adjacent lower pressure heads is arranged on the connecting plate and used for preventing short circuit caused by contact between the lower pressure heads; and the upper pressure head is used for fixing the lower pressure head on the connecting plate. The utility model discloses guaranteeing that the module is safe when welding, stable, under qualified prerequisite, the effectual processing cost and the installation space that has reduced the copper nozzle for increase the space distance of laser via hole, prevent that the copper nozzle itself from hindering the laser beam to shine the welding that the piece influences closed loop circle, can effectively improve the qualification rate and the production efficiency of product.
Description
Technical Field
The utility model relates to a new forms of energy electric power technical field, concretely relates to welding jig pressure head.
Background
In the field of new energy vehicles, the bus bars are generally welded to the battery module by a welding jig head. A copper nozzle is arranged on a pressure head of a traditional welding fixture, and a bus bar is directly extruded through the copper nozzle, so that one copper nozzle corresponds to one welding position. Under the condition that the center distance of the pole is very small, the design size of the copper nozzle can be limited, so that during welding, top-down laser cannot completely irradiate the bus bar, the welding arc is incomplete, the welding area cannot meet the requirement, and the overcurrent is reduced.
Therefore, in order to ensure the welding quality and improve the straight-through rate of the product, the design of the existing copper nozzle needs to be improved when the module with limited pole space is used for welding.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a welding jig pressure head, when welding to utmost point post centre-to-centre spacing limited battery module, can reduce the technical requirement of copper nozzle processing, reduce the space, improve welding quality.
In order to achieve the above object, the utility model provides a welding jig pressure head for with the piece welding on the module, include:
at least two lower squeeze heads that directly contact and squeeze the sliver;
the lower pressure heads are connected to the connecting plate, and a protruding structure located between every two adjacent lower pressure heads is arranged on the connecting plate and used for preventing short circuit caused by contact between the lower pressure heads; and
and the upper pressure head is used for fixing the lower pressure head to the connecting plate.
Preferably, the lower pressing head comprises a copper nozzle and a fixing plate, one end of the copper nozzle extrudes the fins, the other end of the copper nozzle is connected to the fixing plate, and the copper nozzle is connected to the connecting plate through the fixing plate.
Preferably, the device further comprises a guide shaft, wherein the guide shaft penetrates through the upper pressure head, the connecting plate and the fixing plate, so that the lower pressure head can move along the guide shaft.
Preferably, the spring is arranged on the lower pressure head, the upper pressure head is arranged on the lower pressure head, the lower pressure head is arranged on the lower pressure head, and the lower pressure head is arranged on the lower pressure head.
Preferably, the copper nozzle comprises a copper nozzle outer edge, the copper nozzle outer edge is hollow and comprises a cylindrical part and a conical barrel part, one end of the cylindrical part is connected to the fixing plate, the other end of the cylindrical part extends downwards, the diameter of the cylindrical part is gradually reduced, and the conical barrel part is formed.
Preferably, a first through hole is arranged at a position where the fixing plate is connected with the cylindrical part, and the diameter of the first through hole is not smaller than that of the cylindrical part;
and a second through hole is formed in the position where the connecting plate is connected with the fixing plate.
Preferably, the copper nozzle also comprises a cone-shaped copper nozzle lining which is arranged in the outer edge of the copper nozzle; the copper nozzle lining is superposed with the central axis of the outer edge of the copper nozzle.
Preferably, the maximum diameter of the copper nozzle lining is arranged at the first through hole, and the minimum diameter of the copper nozzle lining is arranged in the outer edge of the copper nozzle.
Preferably, the side surface of the fixing plate is provided with at least one nitrogen connector for blowing nitrogen; the copper nozzle is equipped with the clearance outward along with between the copper nozzle inside lining, the copper nozzle inside lining with be equipped with the third through-hole on the corresponding position that the nitrogen gas connects, nitrogen gas passes through the clearance, or pass through the third through-hole by the copper nozzle inside lining reachs the welded surface.
Preferably, the upper pressure head is a Z-shaped block, the Z-shaped block is symmetrically arranged on two sides of the connecting plate along a central axis of the connecting plate, and the central axis is perpendicular to a plane where the connecting plate is arranged.
The utility model discloses guaranteeing that the module is safe when welding, stable, under qualified prerequisite, the effectual processing cost and the installation space that has reduced the copper nozzle for increase the space distance of laser via hole, prevent that the copper nozzle itself from hindering the laser beam to shine the welding that the piece influences closed loop circle, can effectively improve the qualification rate and the production efficiency of product.
Drawings
Fig. 1 is the utility model discloses a welding jig pressure head user state schematic diagram.
Fig. 2 is the utility model discloses a welding jig pressure head structure schematic diagram.
Fig. 3a is a schematic view of the structure of the lower pressing head of the present invention.
Fig. 3b is a cross-sectional view of the lower ram of the present invention.
Fig. 4 is a top view of the welding fixture pressure head.
In the figure, 1-lower pressure head, 11-copper nozzle outer edge, 111-cylindrical part, 112 conical barrel part, 12-copper nozzle lining, 121-copper nozzle lining protrusion, 13-fixing plate, 131-first through hole, 132-nitrogen connector, 2-connecting plate, 21-bulge structure, 22-second through hole, 3-upper pressure head, 4-guide shaft, 5-spring, 6-battery module and 7-busbar.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the welding jig of the present invention is used to weld the tab 7 to the battery module 6.
As shown in fig. 2, 3a and 3b, the welding fixture ram comprises two lower rams 1, a web 2 and an upper ram 3. The lower pressing head 1 directly contacts and presses the fins, and the upper pressing head 3 is used to fix the lower pressing head 1 to the connecting plate 2. And the connecting plate 2 is provided with a convex structure 21 positioned between two adjacent lower pressing heads 1, and the convex structure is used for preventing the contact between the lower pressing heads 1 from causing short circuit.
The lower pressure head 1 consists of a copper nozzle outer edge 11, a copper nozzle inner lining 12 and a fixing plate 13. The outer edge 11 of the copper nozzle is hollow and comprises a cylindrical part 111 and a cone-shaped barrel part 112, one end of the cylindrical part 111 is connected to the fixing plate 13, the other end of the cylindrical part extends downwards, the diameter of the cylindrical part is gradually reduced, and the cone-shaped barrel part 112 is formed. The fixing plate 13 is used for connecting the outer edge 11 of the copper nozzle to the connecting plate 2, a first through hole 131 is arranged at the position where the fixing plate 13 is connected with the cylindrical part 111, and the diameter of the first through hole 131 is the same as that of the cylindrical part 111. Preferably, the outer rim 11 and the fixing plate 13 are integrally formed. The copper nozzle lining 12 is in a cone barrel shape and is arranged in the outer edge 11 of the copper nozzle; the maximum diameter is arranged at the first through hole 131, and the minimum diameter is arranged in the outer edge 11 of the copper nozzle. The copper nozzle inner liner 12 coincides with the central axis of the copper nozzle outer edge 11. A second through hole 22 is formed at a position where the connecting plate 2 is connected with the fixing plate 13.
In this example, to ensure the stable fixing of the nozzle liner 12 to the fixing plate 13, the circumference of the nozzle liner at the maximum diameter is protruded outward to form a nozzle liner protrusion 121, and a through groove is formed along the circumferential direction inside the first through hole 131 of the fixing plate 13. The copper nozzle liner protrusion 121 can be inserted into the through groove so that the copper nozzle liner 12 can be coupled to the first through hole 131 of the fixing plate 13. Preferably, the circumference of the maximum diameter position of the copper nozzle lining 12 protrudes outwards by 0.3mm to form a copper nozzle lining protrusion 121, the copper nozzle lining 12 is extruded on the copper nozzle outer edge 11 by using the connecting plate 2, the coincidence of the copper nozzle outer edge 11 and the central axis of the copper nozzle lining 12 is ensured, and the welding consistency and stability are ensured.
As shown in fig. 4, the welding jig ram further includes a guide shaft 4 and a spring 5 in order to ensure that the lower ram can be compacted against the bar. The guide shaft 4 penetrates through the upper pressure head 3, the connecting plate 2 and the fixing plate 13, so that the lower pressure head 1 can move in the vertical direction along the guide shaft 4 in the process of ascending and descending, and the central shaft of the lower pressure head 1, the central hole of the pole column and the marking hole of the pole piece are ensured to be on the same axis. The spring 5 passes through the upper pressure head 3, the connecting plate 2 and the fixing plate 13, when the lower pressure head 1 extrudes the bus bar piece, the spring 5 can provide thrust for the lower pressure head, and the outer edge 11 of the copper nozzle is compacted on the bus bar piece by utilizing the elastic deformation of the spring 5.
The side surface of the fixed plate is provided with two nitrogen connectors 132 for blowing nitrogen; a gap is arranged between the copper nozzle outer edge 11 and the copper nozzle inner lining 12, a third through hole (not shown in the figure) is arranged on the corresponding position of the copper nozzle inner lining 12 and the nitrogen connector 132, and nitrogen passes through the gap or reaches the welding surface from the copper nozzle inner lining 12 through the third through hole. The blowing of the protective gas leads the welding surface to be smoother and smoother.
The upper pressure head 3 is a Z-shaped block, the Z-shaped block is symmetrically arranged on two sides of the connecting plate 2 along the central axis of the connecting plate 2, and the central axis is perpendicular to the plane where the connecting plate 2 is located.
The utility model discloses a use method does: and fixing the bar piece on the module by using a positioning tool, ensuring that the center of the marking hole of the bar piece and the center hole of the pole are on the same axis, and placing the module at a position to be welded. The equipment elevating system moves, and the slow jack-up module rises together with the piece of ba, and the piece of ba continues to rise after contacting along the bottom outside copper mouth, and the inside spring shrink of copper mouth mechanism takes place elastic deformation this moment, and the spring produces decurrent thrust to the outer edge of copper mouth for the outer edge bottom of copper mouth carries out in close contact with the piece of ba, and spring elastic deformation stops rising when reaching deformation volume ten times position. The laser beam is focused and welded, and the welding of the closed circle is carried out along the outer edge of the marking hole of the fin. After welding, the lifting mechanism descends, the module and the bus sheet slowly descend along with the lifting mechanism, and the lower pressure head descends to a specified position under the elastic deformation pressure of the spring at the moment. And the lifting mechanism descends to a specified position, the module rotates to the next station along with the flow of the material flow line, and one welding cycle is completed.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (9)
1. A welding fixture pressure head for welding a buckstay on a module, comprising:
at least two lower rams;
the lower pressure heads are connected to the connecting plate, and a protruding structure located between every two adjacent lower pressure heads is arranged on the connecting plate and used for preventing short circuit caused by contact between the lower pressure heads; and
the upper pressure head is used for fixing the lower pressure head to the connecting plate;
the lower pressure head comprises a copper nozzle and a fixing plate, one end of the copper nozzle extrudes the base plate, the other end of the copper nozzle is connected to the fixing plate, and the copper nozzle is connected to the connecting plate through the fixing plate.
2. The welding fixture ram of claim 1, further comprising a guide shaft extending through the upper ram, the connecting plate, and the retaining plate to enable the lower ram to move along the guide shaft.
3. The welding fixture ram of claim 1, further comprising a spring extending through the upper ram, the connecting plate, and the holding plate, the spring being capable of providing a pushing force to the lower ram when the lower ram compresses the shims.
4. The welding fixture head of claim 1, wherein the nipple includes a nipple outer rim, the nipple outer rim being hollow and including a cylindrical portion and a conical barrel portion, the cylindrical portion being connected to the anchor plate at one end and extending downwardly at an opposite end to reduce in diameter to form the conical barrel portion.
5. The welding fixture ram of claim 4 wherein said retainer plate is connected to said cylindrical portion at a location that defines a first through-hole, said first through-hole having a diameter that is no less than a diameter of said cylindrical portion;
and a second through hole is formed in the position where the connecting plate is connected with the fixing plate.
6. The welding fixture head of claim 5, wherein the copper nozzle further comprises a cone-barrel shaped copper nozzle liner disposed within an outer edge of the copper nozzle; the copper nozzle lining is superposed with the central axis of the outer edge of the copper nozzle.
7. The welding fixture head of claim 6, wherein the copper nozzle liner has a maximum diameter at the first through hole and a minimum diameter at the inner edge of the copper nozzle.
8. A welding fixture head according to claim 6, wherein the side of the holding plate is provided with at least one nitrogen gas connection for blowing nitrogen gas; the copper nozzle is equipped with the clearance outward along with between the copper nozzle inside lining, the copper nozzle inside lining with be equipped with the third through-hole on the corresponding position that the nitrogen gas connects, nitrogen gas passes through the clearance, or pass through the third through-hole by the copper nozzle inside lining reachs the welded surface.
9. The welding fixture ram of claim 1, wherein the upper ram is a Z-block that is symmetrically positioned on opposite sides of the web along a central axis of the web that is perpendicular to a plane of the web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023237806.2U CN214921760U (en) | 2020-12-29 | 2020-12-29 | Pressure head of welding fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023237806.2U CN214921760U (en) | 2020-12-29 | 2020-12-29 | Pressure head of welding fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214921760U true CN214921760U (en) | 2021-11-30 |
Family
ID=79115808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023237806.2U Active CN214921760U (en) | 2020-12-29 | 2020-12-29 | Pressure head of welding fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214921760U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346564A (en) * | 2021-12-27 | 2022-04-15 | 东莞拓斯达技术有限公司 | Clamp for series-parallel welding of batteries |
| CN115446486A (en) * | 2022-10-26 | 2022-12-09 | 楚能新能源股份有限公司 | Laser welding copper nozzle |
-
2020
- 2020-12-29 CN CN202023237806.2U patent/CN214921760U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346564A (en) * | 2021-12-27 | 2022-04-15 | 东莞拓斯达技术有限公司 | Clamp for series-parallel welding of batteries |
| CN114346564B (en) * | 2021-12-27 | 2023-12-05 | 东莞拓斯达技术有限公司 | Clamp for battery serial-parallel welding |
| CN115446486A (en) * | 2022-10-26 | 2022-12-09 | 楚能新能源股份有限公司 | Laser welding copper nozzle |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room A205, building C, No. 205, Binhai 6th Road, Jinhai Second Road, Airport New District, Longwan District, Wenzhou City, Zhejiang Province 325024 Patentee after: REPT BATTERO Energy Co., Ltd. Patentee after: SHANGHAI RUIPU ENERGY Co.,Ltd. Address before: Room A205, building C, No. 205, Binhai 6th Road, Jinhai Second Road, Airport New District, Longwan District, Wenzhou City, Zhejiang Province 325024 Patentee before: RUIPU ENERGY Co.,Ltd. Patentee before: SHANGHAI RUIPU ENERGY Co.,Ltd. |