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IGBT gate pole resistance adjusting circuit, motor controller and electric vehicle

A gate resistance and regulating circuit technology, applied in the field of power electronics, can solve the problems of CE inter-electrode voltage breakdown, drop in withstand voltage, affecting IGBT life and output power, etc., to avoid breakdown, guarantee life and output power. Effect

Active Publication Date: 2021-01-05
INVT ELECTRIC VEHICLE DRIVE TECH SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a low-temperature working environment, the withstand voltage capability between the CE electrodes (C: collector; E: emitter) of the traditional IGBT will decrease due to the influence of low temperature, and there is a risk that the voltage between the CE electrodes will be broken down. Affect the life and output power of IGBT

Method used

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  • IGBT gate pole resistance adjusting circuit, motor controller and electric vehicle
  • IGBT gate pole resistance adjusting circuit, motor controller and electric vehicle
  • IGBT gate pole resistance adjusting circuit, motor controller and electric vehicle

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Embodiment Construction

[0044] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0046] In the present in...

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Abstract

The invention discloses an IGBT gate pole resistance adjusting circuit, a motor controller and an electric vehicle. The IGBT gate pole resistance adjusting circuit comprises a variable resistance circuit used for being connected with an IGBT gate pole so as to set an input resistor of the IGBT gate pole; a temperature detection circuit used for detecting the working temperature of the IGBT and outputting a temperature detection signal; a main control chip used for outputting a corresponding resistance adjusting signal to control the variable resistance circuit to set the resistance value of the input resistor of the IGBT gate pole according to the temperature detection signal of the temperature detection circuit. Via the IGBT gate pole resistance adjusting circuit disclosed in the invention, the service life and the output power of the IGBT can be guaranteed in a low-temperature environment.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to an IGBT gate resistance adjustment circuit, a motor controller and an electric vehicle. Background technique [0002] At present, in the motor controller of electric vehicles, IGBTs are generally used as switching devices; while traditional IGBTs are driven by voltage, and in the design stage, the drive voltage (ie, gate voltage) and drive resistance (ie, gate resistance) of the IGBT are fixed. ) way to make the motor controller reach the set maximum output power and life. However, in a low-temperature working environment, the withstand voltage capability between the CE electrodes (C: collector; E: emitter) of traditional IGBTs will decrease due to the influence of low temperature, and there is a risk that the voltage between CE electrodes will be broken down, thereby Affect the life and output power of IGBT. Contents of the invention [0003] The main purpose of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08H02P27/06B60L15/20
CPCH02M1/08H02P27/06B60L15/20Y02T10/72
Inventor 陈鹏宇余凌飞杨伟谢奇才
Owner INVT ELECTRIC VEHICLE DRIVE TECH SHENZHEN CO LTD
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