Power module life test cooling device

A power module and life test technology, which is applied to electrical components, electric solid devices, circuits, etc., can solve the problems of extended cooling time of power modules, reduced operating temperature range, and reduced cooling efficiency of life test cooling devices. Effects of cooling efficiency, accelerated cooling rate, and extended temperature range

Active Publication Date: 2019-05-14
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the low-temperature operating temperature is limited by the temperature of the secondary water supply, and it increases with the increase of air temperature. The cooling time of the power module is prolonged, and the operating temperature range is reduced, resulting in a decrease in the cooling efficiency of the power module life test cooling device.

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Embodiment Construction

[0023] The core of the present invention is to provide a power module life test cooling device, and the cooling efficiency of the power module life test cooling device is improved.

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Please refer to figure 1 and figure 2 , in a specific implementation manner, the power module life test cooling device provided by the specific embodiment of the present invention includes a cooling chamber, a condenser 200, an air pressure regulating pump 102, a cooling liquid circulation pump 104, a partition, a cooling liquid delivery pipe 107 and The spray hole is arranged at the outlet end of the coolant delivery pipe 107 and is used to spray the coolant to the position of the power module 300. Specifically, a plurality of spray holes ca...

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Abstract

The invention discloses a power module life test cooling device comprising a cooling chamber, a condenser, an air pressure regulating pump, a coolant circulating pump, a partition, a coolant conveyingpipe and a spraying hole disposed at the outlet of the coolant conveying pipe and used for spraying the coolant to the position of the power module, wherein the partition divides the cooling chamberinto an evaporation cavity and a condensation cavity located at the lower portion of the evaporation cavity, the evaporation cavity is connected with the condensation cavity, the cooling chamber is asealed chamber, the coolant circulating pump is disposed on the coolant conveying pipe, the condenser is located in the condensation cavity, the inlet of the coolant conveying pipe is located in the coolant of the condensation cavity, and the air pressure regulating pump is configured to pump the air in the evaporation cavity to the condensation cavity. The cooling efficiency of the power module life test cooling device is improved.

Description

technical field [0001] The invention relates to the technical field of life testing, in particular to a power module life testing cooling device. Background technique [0002] In order to find out the failure mechanism of power modules such as IGBTs, explore device status monitoring and reliability management methods, and test the reliability of new materials and new design processes, it is necessary to conduct life tests on power modules. Since the failure mode of the power module is mainly caused by thermomechanical fatigue, the reliability test for thermal fatigue is particularly important. The power cycle accelerated aging test is one of the commonly used means, specifically, the life of the power module is tested through the power module life test cooling device. [0003] The traditional power module life test cooling device includes a water cooling plate located under the power module and a water pump for cooling water circulation. The water cooling plate is provided ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L23/34H01L23/367H01L23/467H01L23/473
Inventor 李奎支永健姚磊刘文业冯钊赞何凯王春燕邓文川郭宗坤李诗怀曾云峰
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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