Adaptive power semiconductor module reliability test testing clamp

Abstract

The invention relates to an adaptive power semiconductor module reliability test testing clamp. According to the clamp, two guide rods are fixed on a bottom plate; a trapezoidal lead screw is connected with a sliding plate through a lead screw connecting sleeve and a thrust bearing; a guide sleeve is arranged on the sliding plate; the guide rods penetrate through the guide sleeve and can slide up and down; a radiator is fixed on the bottom plate; a heating plate is arranged on the radiator; and a tested module is arranged on the heating plate. The clamp can be pressed on the heating plate according to different module appearances, so that the test temperature is constant. The position of a fixing hole can be adaptively adjusted according to different fixing styles of the module, the positions of a left-to-right sliding strip and a back-and-forth supporting screw rod of the clamp are adjusted, and the coordinates of the pressed module supporting screw rod is equivalently adjusted, so that the supporting screw rod is accurately positioned at the position of the module fixing hole. The clamp is applied to various power semiconductor module reliability test equipment at present.

Description

technical field [0001] The invention relates to a test fixture for the reliability test of power semiconductor modules, which can be press-fitted according to the shape of different power semiconductor modules and its fixing method, and is currently mainly used in power semiconductor module reliability test equipment, which can be heated through the bottom plate The system and heat dissipation system heat and control the temperature of the module under test. Background technique [0002] At present, in the field of power semiconductor applications, the application range of modules is becoming wider and wider, and there are more and more types of modules. In terms of functions, there are single-tube, single-phase rectifier bridge, three-phase rectifier bridge, full-control bridge, and half-control bridge. , series bridge arm, common cathode module, common anode module, etc. From the fixing method, there are single screw fixing, double screw fixing, four screw fixing and so on...

AI Technical Summary

Problems solved by technology

Before the power module leaves the factory, various factory tests and reliability tests must be carried out. In the reliability test of the module, in the past, the module was fixed on the heating plate or radiator by screws to achieve constant temperature or heat dissipation during the test process. Because there are many types of modules and different fixing methods, if they are all fixed by screws, many screw holes must be tapped on the heating plate or radiator, which will affect the heat conduction and heat dissipation of the module bottom plate, and it is extremely inconvenient in the actual test

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