Electrode terminal of power module and welding method thereof

A technology of electrode terminals and power modules, applied in welding equipment, non-electric welding equipment, circuits, etc., can solve the problems of high-power modules, low welding efficiency, and difficult control of the welding surface, etc., and achieve the realization of ultrasonic welding process and welding Improved reliability and reduced welding fatigue
CN102800833AActive Publication Date: 2012-11-28MACMIC SCIENCE & TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MACMIC SCIENCE & TECHNOLOGY CO LTD
Publication Date
2012-11-28

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Abstract

The invention relates to an electrode terminal of a power module. The electrode terminal comprises a support saddle and a run-off plate which are integrated, wherein a through hole is formed in the run-off plate; the support saddle comprises a transverse plate and upright plates, wherein the upright plates are arranged at two ends of two sides of the transverse plate and subject to arc curve transition, and moreover, connecting plates outwardly bent are arranged at the bottom of the upright plates; the bottom of the run-off plate is in curve transition to the transverse plate; an intermediate notch on the transverse plate extends to the curve transition part between the transverse plate and the run-off plate; and side notches are respectively arranged on two side surfaces of the curve transition part between the run-off plate and the transverse plate. The electronic terminal of the power module has a reasonable structure and can effectively release the stress caused by a welding part of the electronic terminal when being bent, prolong the service life and improve the welding efficiency.
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Description

technical field

[0001] The invention relates to a power module electrode terminal and a welding method thereof, belonging to the technical field of semiconductor power modules. Background technique

[0002] The power module is mainly composed of a semiconductor chip such as an IGBT chip, a metal-clad ceramic substrate (DBC), a copper base plate, a casing, and input / output electrode terminals and signal terminals. Each electrode terminal is fixed on the metal layer of the metal-ceramic substrate by welding. , the other end of each electrode terminal goes out of the shell and is bent and set on the upper part of the shell, and then connected to the external power supply and the output working power supply through the fastener installation. At present, the electrode terminals of power modules are mostly composed of a groove part and a lead-out part. The groove part is a vertical groove structure, and the bottom is bent inward and welded on the metal layer of the metal-ceramic s...

Claims

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