Welding method of composite copper bar conducting layer, and composite copper bar

A composite copper bar and welding method technology, applied in welding equipment, circuits, electrical components and other directions, can solve the problems of inability to install leads on the composite copper bar matrix, inability to install leads, strength reduction, etc., to prevent softening and deformation, reduce heat, The effect of improving quality

Active Publication Date: 2015-01-28
浙江冠华电气有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is that the existing welding method cannot install lead wires on any part of the composite copper bar matrix, and the technical problems of workpiece deformation and strength reduction during the welding process, thus proposing a method that can be used in The lead wire is welded at any position on the conductive layer of the composite copper bar according to the requirements of the actual installation wiring position, and the welding method that can ensure the strength of the lead wire workpiece
[0005] In addition, the technical problem to be solved by the present invention is that the existing welding method cannot install lead wires at any position of the composite copper bar matrix, and the technical problems of deformation and strength reduction of the workpiece during the welding process, thus proposing a method that can be used in On the conductive layer of the composite copper bar, the lead wire is welded at any position according to the requirements of the actual installation wiring position, and the composite copper bar with high lead workpiece strength

Method used

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  • Welding method of composite copper bar conducting layer, and composite copper bar
  • Welding method of composite copper bar conducting layer, and composite copper bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The present embodiment provides a method for welding a conductive layer of a composite copper row, comprising the following steps:

[0040] S1: Insert the lead workpiece 2 (such as figure 2 As shown, it is made of copper or copper alloy, and the shape is composed of two straight plates that are perpendicular to each other and connected together to form an L shape. The welding part of the hole) is positioned on the installation part of the copper bar base 1 through the positioning structure;

[0041]S2: Fill brazing material between the lead workpiece 2 and the copper bar base 1, and place the non-welded part of the lead workpiece 2 in the heat dissipation mold 3;

[0042] S3: Using the resistance brazing process, the brazing material is melted by heating the resistance block, so that the lead workpiece 2 and the copper bar base 1 are welded and fixed (such as figure 1 shown);

[0043] The resistance brazing process includes:

[0044] a: Preheat the two resistance b...

Embodiment 2

[0061] This embodiment provides a welding method for a conductive layer of a composite copper bar. The difference between this embodiment and Embodiment 1 lies in the specific parameters of the resistance brazing process.

[0062] The resistance brazing process of this embodiment includes:

[0063] a: Preheat the two resistance blocks used as the upper mold and the lower mold to 100°C higher than the melting temperature of the brazing material;

[0064] b: Quickly place the mounting part of the copper bar base 1 and the welding part of the lead workpiece 2, which have been positioned together by the positioning structure, between the two resistor blocks, so that the two resistor blocks are connected to the mounting part and the mounting part with a pressure of 0.3MPa The welding part is fit;

[0065] c: Continue to pass 800A current to the resistance block, and weld for 8s to fully melt the solder;

[0066] d: After disconnecting the current, keep the pressure for 15s to com...

Embodiment 3

[0068] This embodiment provides a welding method for the conductive layer of the composite copper bar. The difference between this embodiment and Embodiment 1 or Embodiment 2 lies in the resistance brazing process.

[0069] The resistance brazing process of this embodiment includes:

[0070] a: Preheat the two resistance blocks used as the upper mold and the lower mold to 75°C higher than the melting temperature of the brazing material;

[0071] b: Quickly place the installation part of the copper bar base 1 and the welding part of the lead workpiece 2, which have been positioned together by the positioning structure, between the two resistance blocks, so that the two resistance blocks are connected to the installation part and the two resistance blocks at a pressure of 0.25MPa The welding part is fit;

[0072] c: Continue to pass 700A current to the resistance block, and weld for 9s to fully melt the solder;

[0073] d: After disconnecting the current, keep the pressure for...

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Abstract

The invention relates to a welding method of a composite copper bar conducting layer. A welding part of a lead workpiece is positioned on a mounting part of a copper bar substrate by a positioning structure, so that next welding is facilitated. After positioning, a resistance soldering technology instead of chamfering is adopted, so that the mounting part can be arranged in any position of the copper bar substrate, the lead workpiece can be welded on the mounting part, a complicated composite copper bar product comprising a small forming part structure is obtained, and the welding strength and the connection reliability are improved. A non-welding part of the lead workpiece is placed in a heat-dissipation mold, so that heat of the non-welding part of the lead workpiece conducted by welding can be dissipated by the heat-dissipation mold, the non-welding part of the lead workpiece can avoid softening deformation and hardness and strength reduction due to overheating, the hardness and the strength of the non-welding part are ensured, and torsion resistance of riveting a nut in a non-welding area is ensured. In addition, the invention further relates to a composite copper bar.

Description

technical field [0001] The invention relates to a welding method for a conductive layer of a composite copper bar and a composite copper bar, belonging to the technical field of electronic accessories. Background technique [0002] Composite busbar, also known as composite busbar, busbar (motherboard), low-inductance busbar, laminated busbar, laminated power busbar, etc., belongs to a multi-layer composite structure connection bar, which is widely used in power electronic equipment. An important form of electrical connection is the expressway of the power distribution system. The composite busbar adopts a composite structure of conductive material and insulating material. Encapsulate single or multi-layer conductors with high dielectric strength materials to form low inductance composite structures. Compared with the traditional cable wiring method, the use of composite busbars can provide a safe, fast, clear structure and highly integrated electrical wiring system. Moreo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B5/02B23K1/08
Inventor 张胜锰阳林张胜浩
Owner 浙江冠华电气有限公司
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