CN117444396A - Laser welding process for two metals copper and aluminum in CCS integrated busbar - Google Patents
Laser welding process for two metals copper and aluminum in CCS integrated busbar Download PDFInfo
- Publication number
- CN117444396A CN117444396A CN202311687891.8A CN202311687891A CN117444396A CN 117444396 A CN117444396 A CN 117444396A CN 202311687891 A CN202311687891 A CN 202311687891A CN 117444396 A CN117444396 A CN 117444396A
- Authority
- CN
- China
- Prior art keywords
- copper
- aluminum
- welding
- laser
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 63
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000010949 copper Substances 0.000 title claims abstract description 33
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 title claims abstract description 11
- 150000002739 metals Chemical class 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims abstract description 25
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 238000005265 energy consumption Methods 0.000 claims abstract description 3
- 238000005516 engineering process Methods 0.000 claims description 5
- VRAIHTAYLFXSJJ-UHFFFAOYSA-N alumane Chemical compound [AlH3].[AlH3] VRAIHTAYLFXSJJ-UHFFFAOYSA-N 0.000 claims description 3
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000004594 Masterbatch (MB) Substances 0.000 claims 2
- 239000004411 aluminium Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/16—Composite materials, e.g. fibre reinforced
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to a laser welding process of two metal copper and aluminum in a CCS integrated busbar, which is used for welding a CCS integrated busbar circuit board base material or a copper-aluminum composite material and comprises a circuit board, an NTC integrated module or a fuse integrated module or an NTC and FPC combined module, aluminum bars, a bracket and laser welding equipment; the FPC, the FDC or the wire harness is welded with the anode or the cathode of the battery and the aluminum bar or the copper bar by laser through adjusting the laser energy, the laser power, the tuning frequency, the laser beam focusing area and the like of the laser welding equipment, so that the drawing force is more than or equal to 40N; the welding process has the remarkable advantages of improving the welding efficiency, reducing the energy consumption and the like, and is used for forming the CCS integrated busbar circuit board.
Description
Technical Field
The invention relates to a CCS integrated busbar assembly technology and use equipment, in particular to a laser welding process for two metal copper and aluminum in a CCS integrated busbar.
Background
"Cells Contact System" is abbreviated CCS and generally refers in battery technology to a system that connects and manages individual cells in a battery.
In a battery pack or battery pack, containing a number of individual battery cells or battery cells, these cells need to be effectively connected together to provide the required voltage and current; the stability and effectiveness of such connection are ensured while the charge and discharge of the battery are managed, and overcharge or overdischarge is prevented, so that the performance and life of the battery are ensured.
CCS typically make connections to corresponding battery cells through CCS integrated bus bars, such as through circuit boards, connectors, and buss bars; however, in the existing integrated busbar setting method, separate NTC detection layout and fusing layout for preventing overload of the battery are required, which results in scattered, many and long integrated busbar technological processes, high manufacturing cost and complex structure.
The corresponding welding method for providing the connecting part is particularly necessary for optimizing the structure of the CCS integrated busbar.
Accordingly, there is a need to provide a laser welding process for two metals copper and aluminum in CCS integrated masters to solve the above problems.
Disclosure of Invention
The invention aims to provide a laser welding process for two metal copper and aluminum in a CCS integrated busbar.
The invention realizes the aim through the following technical scheme:
a laser welding process of two metal copper and aluminum in a CCS integrated busbar is used for welding a CCS integrated busbar circuit board base material or a copper-aluminum composite material and comprises a circuit board, an NTC integrated module or a fuse integrated module or an NTC and FPC combined module, aluminum bar, a bracket and laser welding equipment;
the FPC, the FDC or the wire harness is welded with the anode or the cathode of the battery and the aluminum bar or the copper bar by laser through adjusting the laser energy, the laser power, the tuning frequency, the laser beam focusing area and the like of the laser welding equipment, so that the drawing force is more than or equal to 40N;
the welding mode is as follows: copper-copper welding, copper-aluminum welding, aluminum-aluminum welding, copper-aluminum composite materials and flux or aluminum welding;
the welding process has the remarkable advantages of improving the welding efficiency, reducing the energy consumption and the like, and is used for forming the CCS integrated busbar circuit board.
Further, with reference to the center of the welding structure of the copper material, the aluminum material or the copper-aluminum composite material, the top layer surface and the bottom layer surface of the circuit board are respectively designed with welding areas connected with the CCS, and the welding areas are welded at one end or two ends or multiple points of the circuit board.
Furthermore, the FPC circuit board material can adopt PI+copper and copper-aluminum composite materials, and a laser welding process for manufacturing the circuit is realized.
Further, the copper sheet is welded with the copper wire substrate to form a conductor electric connection, and the copper material, the aluminum material or the copper-aluminum composite material and the connecting circuit board are integrated into a whole to be used as a connecting piece of the CCS integrated busbar
Compared with the prior art, the invention creatively welds the copper sheet of the circuit board by laser, thereby greatly reducing the cost.
Drawings
Fig. 1 is a schematic diagram of an application of a circuit board copper material, aluminum material or copper-aluminum composite welding structure.
Fig. 2 is one of the layout diagrams of the soldering region.
FIG. 3 is a second layout diagram of a solder area.
Fig. 4 is a schematic diagram of the structure of the circuit board copper material, aluminum material or copper-aluminum composite laser welding structure.
Fig. 5 is a schematic diagram of circuit layers of a circuit board copper, aluminum or copper aluminum composite laser welded.
Detailed Description
Examples:
referring to fig. 1-5, the present embodiment shows a welding technology field of a substrate or copper-aluminum composite material of a CCS integrated busbar circuit board, which includes a circuit board, an NTC integrated module or a fuse integrated module or an NTC and FPC combined module, an aluminum bar, a bracket, a laser welding device, etc., and by adjusting laser energy, laser power, tuning frequency, laser beam focusing area, etc., the positive electrode or negative electrode of the FPC, FDC or wire harness, the battery, and the aluminum bar or copper bar are welded together by laser, so as to achieve a drawing force of not less than 40N, and have the remarkable advantages of improving welding efficiency, and small energy loss, etc., so as to form a welding technology of the CCS integrated busbar circuit board.
The welding mode is as follows: copper-copper welding, copper-aluminum welding, aluminum-aluminum welding, copper-aluminum composite materials, and flux or aluminum welding.
The center of the circuit board copper material, aluminum material or copper aluminum composite 100 is used as a reference, the top layer surface and the bottom layer surface of the circuit board or copper material, aluminum material or copper aluminum composite are respectively designed with a welding area 200 electrically connected with the CCS, and the welding areas are designed at two ends of the FPC circuit board copper material, aluminum material or copper aluminum composite.
Has NTC temperature sensing function, and is connected with the outside through the circuit welding area provided for temperature control.
And the position of the NTC negative temperature coefficient sensor 2 is correspondingly provided with plastic package or protective bracket glue injection sealing. The combined welding structure of NTC and FPC circuit board copper material, aluminum material or copper aluminum composite and the like, which are integrated into a whole by temperature detection, overcurrent fusing protection and connecting circuit board, is used as a connecting piece of the CCS integrated busbar.
The top layer surface and the bottom layer surface of the NTC and FPC board combined welding structure 100 are respectively provided with a top layer insulating protective film 4 and a bottom layer insulating protective film 5, and after the top layer insulating protective film 4 and the bottom layer insulating protective film 5 are attached, the window opening area of the insulating protective film is a welding area, so as to form a connecting area 200 to be welded by laser.
Compared with the prior art, the invention creatively welds the copper sheet of the circuit board by laser, thereby greatly reducing the cost. What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (4)
1. A laser welding process for two kinds of metal copper and aluminum in a CCS integrated busbar is characterized by comprising the following steps of: the welding device is used for welding a CCS integrated busbar circuit board base material or a copper-aluminum composite material and comprises a circuit board, an NTC integrated module or a fuse integrated module or an NTC and FPC combined module, aluminum bars, a bracket and laser welding equipment;
the FPC, the FDC or the wire harness is welded with the anode or the cathode of the battery and the aluminum bar or the copper bar by laser through adjusting the laser energy, the laser power, the tuning frequency, the laser beam focusing area and the like of the laser welding equipment, so that the drawing force is more than or equal to 40N;
the welding mode is as follows: copper-copper welding, copper-aluminum welding, aluminum-aluminum welding, copper-aluminum composite materials and flux or aluminum welding;
the welding process has the remarkable advantages of improving the welding efficiency, reducing the energy consumption and the like, and is used for forming the CCS integrated busbar circuit board.
2. The laser welding process of two metals copper and aluminum in a CCS integrated master batch as claimed in claim 1, wherein: the welding structure center of the copper material, the aluminum material or the copper-aluminum composite material is used as a reference, the top layer surface and the bottom layer surface of the circuit board are respectively designed with welding areas connected with the CCS, and the welding areas are welded at one end or two ends or multiple points of the circuit board.
3. The laser welding process of two metals copper and aluminum in a CCS integrated master batch as claimed in claim 2, wherein: the FPC circuit board material can adopt PI+copper, copper aluminium composite material, realize the preparation laser welding technology of circuit.
4. A laser welding process for two metals copper and aluminum in a CCS integrated busbar as claimed in claim 3, wherein: the copper sheet is welded with the copper wire roadbed plate to form a conductor electric connection, and the copper material, the aluminum material or the copper-aluminum composite material and the connecting circuit board are integrated into a whole to be used as a connecting piece of the CCS integrated busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311687891.8A CN117444396A (en) | 2023-12-11 | 2023-12-11 | Laser welding process for two metals copper and aluminum in CCS integrated busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311687891.8A CN117444396A (en) | 2023-12-11 | 2023-12-11 | Laser welding process for two metals copper and aluminum in CCS integrated busbar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117444396A true CN117444396A (en) | 2024-01-26 |
Family
ID=89587769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311687891.8A Pending CN117444396A (en) | 2023-12-11 | 2023-12-11 | Laser welding process for two metals copper and aluminum in CCS integrated busbar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117444396A (en) |
-
2023
- 2023-12-11 CN CN202311687891.8A patent/CN117444396A/en active Pending
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |