Laser hybrid welding switching piece
By laser welding the copper-aluminum composite pole and the substrate, and attaching PI and PET patches under the substrate, the problem of unstable welding of traditional adapters is solved, and a high-yield welding effect is achieved.
Patent Information
- Application Number
- CN202422407587.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The traditional adapter welding process has many unstable factors and poor controllability, which leads to welding defects such as cold welding, spatter, and explosion points, and low yield rate.
The copper-aluminum composite pole is connected to the base plate through laser welding, and PI patches and PET patches are attached under the base plate. Modified acrylic glue is set on the back of the PI patch. Laser welding and material selection are combined to ensure welding quality.
It improves the stability and controllability of welding, reduces welding defects, and improves product yield.
Smart Images
Figure CN223462383U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of adapter piece, specifically relates to a laser composite welding adapter piece. BACKGROUND
[0002] The adapter piece is widely used in the lithium battery module / pack field, is unobtrusive but is crucial, as the key component connecting the battery cover plate and the battery core, the adapter piece must meet the requirements of the battery overcurrent, strength and splashing, the adapter piece needs sufficient weld width and depth in the welding process to meet the welding defects such as no virtual welding, welding, explosion point projection, the traditional adapter piece usually adopts the mode of continuous stamping to stamp out the convex of copper-aluminum base material, then the composite material protection sheet is stamped into the convex cavity to make it fusion, the defect of this mode is that the controllability of many unstable factors is poor, and the yield is low, often the protection sheet and the convex are not in place or the riveting is not firm and easy to fall off, causing the adapter piece to appear virtual welding, splashing, explosion point and other phenomena during welding, in order to solve the above problems, a composite laser welding adapter piece is designed to solve the process complexity of the traditional adapter piece, improve the yield and achieve the purpose of cost reduction and efficiency increase. SUMMARY
[0003] In view of the deficiencies in the prior art, the utility model aims to provide a laser composite welding adapter piece, which has a reasonable structure, can effectively protect the battery, improve the product yield and has high practicability.
[0004] In order to achieve the above object, the utility model is implemented by the following technical scheme: a laser composite welding adapter piece, which comprises a copper-aluminum composite pole, a substrate, a PI patch and a PET patch, the copper-aluminum composite pole is welded and fixed with the substrate, and the lower side of the substrate is attached with the PI patch and the PET patch; the back of the PI patch is provided with modified acrylic glue.
[0005] Preferably, the substrate is made of copper substrate or aluminum substrate.
[0006] Preferably, the utility model has the beneficial effects of reasonable structure, effective protection of the battery, improvement of the product yield and high practicability. BRIEF DESCRIPTION OF DRAWINGS
[0007] The utility model will be described in detail below in combination with the drawings and specific embodiments;
[0008] Fig. 1 The utility model is a structural schematic view;
[0009] Fig. 2 The utility model is an exploded schematic view. DETAILED DESCRIPTION
[0010] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.
[0011] Referring to Figs. 1-2 The utility model discloses a laser composite welding adapter piece, including copper aluminium composite pole 1, base plate 2, PI patch 3 and PET patch 4, copper aluminium composite pole 1 is welded fixed with base plate 2, and the lower side of base plate 2 is pasted with PI patch 3 and PET patch 4, the back of PI patch 3 is provided with modified acrylic glue.
[0012] It is worth noting that the base plate 2 adopts copper base plate or aluminum base plate.
[0013] In addition, a plurality of stepped sink 5 are arranged on the copper aluminium composite pole 1, which facilitates the connection with the top cover.
[0014] The utility model discloses a laser composite welding adapter piece, including copper aluminium composite pole 1, base plate 2, PI patch 3 and PET patch 4, copper aluminium composite pole 1 is welded fixed with base plate 2, and the lower side of base plate 2 is pasted with PI patch 3 and PET patch 4, the back of PI patch 3 is provided with modified acrylic glue.
[0015] The processed composite pole and base plate are assembled into an integrated whole through a laser welding machine equipment, and the copper aluminium composite pole and copper base plate are welded with effective penetration depth of 1-1.5 mm, penetration width of greater than or equal to 1.5 mm, covering assembly groove, no welding, no welding, continuous smooth welding, no welding hole, no welding point, no welding height, no convex, and the pole and adapter piece are perpendicular and not inclined after the welding seam and base plate surface are welded, and the Z-axis thrust is greater than 1500N.
[0016] The back of the base material PI (polyimide) is provided with modified acrylic glue, and the total thickness of the material is 0.05±0.005 mm. The main advantages of PI are high pressure resistance, high temperature resistance (400 DEG C), good insulation performance and electrolyte resistance. The PET patch also has a double protection effect, preventing PI from falling off and causing battery electrolyte corrosion and other unsafe accidents.
[0017] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A laser composite welding adapter, characterized by, The utility model relates to a copper-aluminum composite pole (1), substrate (2), PI patch (3) and PET patch (4), copper-aluminum composite pole (1) is welded and fixed with substrate (2), the lower side of substrate (2) is pasted with PI patch (3) and PET patch (4);The back of PI patch (3) is provided with modified acrylic glue.
2. The laser composite welding adapter of claim 1, wherein, The substrate (2) is made of copper substrate or aluminum substrate.
3. The laser composite welding adapter of claim 1, wherein, The copper-aluminum composite pole (1) is provided with multiple stepped sunken platforms (5).