Copper-aluminum composite plate current-carrying capacity test sample

By designing a copper-aluminum composite board-mounted current test sample using explosive welding to connect copper plates and aluminum plates, the problem that the prior art cannot effectively test the maximum current and maximum current density of copper-aluminum composite boards is solved, and the uniformity of current and accurate measurement of current density is achieved.

CN222689684UActive Publication Date: 2025-03-28郑州宇光复合材料有限公司
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Patent Information

Application Number
CN202421091433.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-20
Publication Date
2025-03-28
Estimated Expiration
2034-05-20

AI Technical Summary

Technical Problem

Existing current-carrying test samples cannot effectively test the maximum current-carrying and maximum current density of copper-aluminum composite panels.

Method used

A copper-aluminum composite board-mounted flow test sample is designed, and the copper plate and aluminum plate that are explosively welded together is connected to the high-current test device through wire clamp drainage plate and soft copper stranded wire. The temperature increase changes in the copper plate, aluminum plate and composite area are detected until the crimping between the copper plate and the aluminum plate is broken.

Benefits of technology

Accurate testing of the highest current carrying capacity and maximum current density of copper-aluminum composite plate is achieved, ensuring that the current carrying capacity in each area of ​​the sample is uniform, and welding between heterogeneous metals is achieved through explosive welding.

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Abstract

The utility model discloses a copper-aluminum composite plate current-carrying capacity test sample, which comprises a copper plate and an aluminum plate, the top surface of one end of the copper plate and the bottom surface of one end part of the aluminum plate are correspondingly crimped and are equal in width, and one end, far away from the aluminum plate, of the copper plate is connected with a first soft copper stranded wire through a first wire clamp drainage plate; the end, away from the copper plate, of the aluminum plate is connected with a second soft copper stranded wire through a second wire clamp drainage plate, the end, away from the copper plate, of the first soft copper stranded wire is connected with a large-current testing device, the large-current testing device is connected with the second soft copper stranded wire, the thickness of the copper plate is 5-8 mm, and the thickness of the aluminum plate is set to be twice that of the copper plate. The area of a composite area of the copper plate and the aluminum plate is equal to the vertical sectional area of the aluminum plate, current is loaded through a large-current test device and is conducted to the copper-aluminum composite plate through the soft copper stranded wire and the wire clamp drainage plate, so that the temperature of the sample is increased at a certain speed, the current value is gradually increased, and the temperature rise change of a copper material, an aluminum material and a copper-aluminum interface is detected by a temperature measurement sensor; and the copper-aluminum composite transition joint fails and is disconnected.
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