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Electric vehicle IGBT power module overheating and power cycle control method

A technology for power modules and electric vehicles, applied in electric vehicles, electrical devices, vehicle components, etc., can solve undiscovered problems, improve reliability, reduce overheating and power cycle failures, reduce maintenance costs and defect incidence Effect

Pending Publication Date: 2021-10-29
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] After searching, no publications of prior art identical or similar to the present invention were found

Method used

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  • Electric vehicle IGBT power module overheating and power cycle control method
  • Electric vehicle IGBT power module overheating and power cycle control method
  • Electric vehicle IGBT power module overheating and power cycle control method

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Embodiment Construction

[0029] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0030] The present invention considers the average temperature T m and the temperature change ΔT j With the close relationship between overheating and power cycling failures, an area-based control method for regulating these two variables is designed to relieve thermomechanical stress and protect chips from overheating and power cycling failures.

[0031] An electric vehicle IGBT power module overheating and power cycle control method, comprising the following steps:

[0032] Step 1. Analyze the thermal fault parameters of the IGBT power module of the electric vehicle. By adjusting the two variables of switching frequency and output current, control the magnitude of power loss, adjust the temperature inside the IGBT power module, and then control the overheating of the IGBT power module;

[0033] The concrete step method of described step 1 is: ...

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Abstract

The invention relates to an electric vehicle IGBT power module overheating and power cycle control method, which comprises the following steps: step 1, analyzing thermal fault parameters of an electric vehicle IGBT power module, and controlling the amplitude of power loss and adjusting the internal temperature of the IGBT power module by adjusting two variables of switching frequency and output current so as to perform overheating control on the IGBT power module; and step 2, performing high-power circulation and low-power circulation control on the IGBT power module. According to the method, the excessive design of the system is avoided, and the maintenance cost and defect occurrence rate of the system are reduced, so that the reliability of the IGBT power module is improved.

Description

technical field [0001] The invention belongs to the technical field of IGBT power module control, and relates to an IGBT power module overheating and power cycle control method, in particular to an electric vehicle IGBT power module overheating and power cycle control method. Background technique [0002] IGBT (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor power module has the advantages of low on-resistance and high withstand voltage, and is widely used in AC motors, frequency converters, switching power supplies, new energy and other fields. IGBT is one of the core devices in electric vehicles and an important part of the power system. The reasons for the failure of IGBT power modules in electric vehicle applications are usually overheating and burning and high and low power cycle damage. Non-linear working modes such as high frequency and high power will lead to overheating of IGBT modules and high and low power cycles. In time, or after a certain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00
CPCB60L3/0023
Inventor 黄潇潇朱辉丁一姚程时燕新赵玉新杜明袁中琛韩磊吴磊郑骁麟
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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