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Metal fully-sealed power supply module immersed aging system and method

A power module, fully sealed technology, applied in the direction of power supply testing, etc., can solve the problems of multiple test sites and test resources, occupancy, and reduce the number of power module burn-in, so as to improve burn-in efficiency, good temperature uniformity, reduce Effect of temperature difference

Pending Publication Date: 2021-12-03
NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
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Problems solved by technology

The limited heat capacity will bring about two problems. One is to reduce the number of burn-in power modules in the cabinet, which will inevitably occupy more test sites and test resources; the other is that the heat of the product itself cannot be conducted out in time, increasing the number of good products. The risk of damage; the third is that it is impossible to accurately control the temperature of the power module shell

Method used

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  • Metal fully-sealed power supply module immersed aging system and method
  • Metal fully-sealed power supply module immersed aging system and method
  • Metal fully-sealed power supply module immersed aging system and method

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] see Figure 1-2 , a fully sealed metal power module submerged aging system, including a main control computer, an aging box, a constant temperature box, a low-temperature tank, a high-temperature tank, a power module, a power circuit, a data acquisition and safety protection circuit, and a temperature controller.

[0028] The main control computer is the core control unit of the system, and it is connected with other parts through GPIB, LAN, USB, RS-23...

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Abstract

The invention discloses a metal fully-sealed power supply module immersed aging system and method in the field of power supply module aging, and the system comprises an aging box body which stores a fluorinated liquid, a constant temperature box body, a high temperature tank body and a low temperature tank body, and a plurality of power supply modules are arranged in the aging box body and are divided into a plurality of groups; the input ends of each group are respectively and commonly connected with a programmable power supply, and the output ends are respectively connected with a programmable electronic load; the high-temperature tank body and the low-temperature tank body are connected to the power supply module through a pipeline, and an electric valve is mounted on the pipeline; and the shell temperature of the power supply module and the fluorinated liquid in the constant-temperature box body and the aging box body are respectively detected by temperature sensors. The heat capacity of the aging system is improved, aging of a large number of power modules is achieved, the aging efficiency is improved, the temperature difference between different power module individuals can be reduced, and good temperature uniformity is achieved.

Description

technical field [0001] The invention relates to the field of power module aging, in particular to a submerged aging system and method for metal fully sealed power modules. Background technique [0002] Power modules with fully sealed metal enclosures are widely used in high-reliability fields such as aerospace, aerospace, ships, and weapons. As the core component of the power supply unit of the complete system, the power module is directly related to the safe operation of the complete system. In order to ensure the quality and reliability of components, reliability screening and assessment must be carried out. Burn-in test is often used to eliminate early failure products. Under a certain ambient temperature, electrical stress is continuously applied to components for a long time. The accidental failure period of the "bathtub curve" exposes potential defects inside components early, thereby eliminating early failure products. [0003] The key difficulty in the power module...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 王斌崔弋扬朱雨生余亚龙郑策临刘俊夫吴向东
Owner NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
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