Logic protection circuit, driving motor controller and system

Abstract

The invention provides a logic protection circuit, a driving motor controller and a system, and relates to the technical field of driving motors. The logic protection circuit comprises a first bufferdriver, a logic conditioning circuit, a driving power circuit and a second buffer driver, wherein the driving power circuit comprises a driving circuit and a power circuit, and the driving circuit isconnected with a motor through the power circuit; the power circuit is composed of a plurality of insulated gate bipolar transistors (IGBTs); the first input end of the first buffer driver is connected with a main control board through a main control board connector; the first output end of the first buffer driver is connected with the driving input end of the driving circuit; the input end of thelogic conditioning circuit is connected with the output end of the driving circuit, and the output end of the logic conditioning circuit is connected with the first input end of the second buffer driver; and the first output end of the second buffer driver is connected with the main control board connector. Compared with the prior art, the problem that the IGBT protection requirement cannot be met due to the fact that the fault blocking speed is low is solved.

Description

technical field [0001] The present application relates to the technical field of driving motors, in particular, to a logic protection circuit, a driving motor controller and a system. Background technique [0002] Environmental pollution and energy shortages in today's society have made people pay more and more attention to new energy vehicles. Pure electric vehicles have become green travel that has attracted much attention due to their advantages such as "zero pollution", low noise, high energy conversion efficiency and simple structure. Transportation has also become an important direction for the future development of major automobile manufacturers. [0003] Insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT) has become an electric field due to its advantages of easy driving, simple control, and high switching frequency of field effect transistors, and the characteristics of low saturation voltage drop and large capacity of BJT bipolar devices. T...

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Problems solved by technology

[0005] The purpose of this application is to provide a logic protection circuit, a drive motor controller and a system to solve the problem that the blocking speed in the prior art is relatively slow and the excessively high current change rate will cause excessive Voltage, resulting in the phenomenon of bombing or false alarms, which cannot meet the protection requirements of IGBT

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