Adaptive electric vehicle high-voltage safety fault diagnosis, early warning, positioning and monitoring system

Abstract

The invention provides a self-adaptive electric automobile high-voltage safety fault diagnosis early-warning positioning monitoring system, which comprises at least one circuit of a self-adaptive insulation fault composite diagnosis early-warning positioning circuit, a connecting resistor fault diagnosis early-warning positioning circuit and a contactor contact adhesion fault diagnosis circuit, a voltage synchronous sampling circuit and a calculation control unit. The system can effectively solve the problem of function lack of prediction and positioning of the insulation fault in a current electric automobile high-voltage safety management system, and can remind a driver and passengers to take effective protection measures on the possible insulation fault before the insulation fault occurs to make the case that a vehicle control system starts an insulation fault prevention and control strategy in advance possible, thereby preventing safety accidents caused by the insulation fault; and the system can also help maintenance personnel to carry out fast maintenance to remove the insulation fault, thereby improving insulation fault elimination efficiency and saving human and material resources and time in fault processing.

Description

technical field [0001] The invention relates to a monitoring system, in particular to an adaptive electric vehicle high voltage safety fault diagnosis, early warning, positioning and monitoring system. Background technique [0002] Electric vehicles have become the focus and focus of global development. In order to meet the demand for high-power electric drives, electric vehicles generally use high-voltage DC power supplies. High-voltage safety has become the key technology that needs to be solved first in the application of electric vehicles, which has a very important impact on the safety of the vehicle itself, the safety of drivers and passengers, and the safety of the vehicle operating environment. Among them, insulation faults, connection resistance faults, and contactor contact adhesion faults of high-voltage circuits are important contents of high-voltage electric vehicle safety management. However, the existing high-voltage safety management system for electric veh...

AI Technical Summary

Problems solved by technology

Lack of an early warning mechanism for insulation faults and connection resistance faults, and the inability to reliably locate weak insulation and excessive connection resistance, resulting in the inability to remind drivers and occupants of upcoming insulation faults and connection resistance faults before insulation faults and connection resistance faults occur. Effective protection against faults cannot help maintenance personnel quickly repair and eliminate insulation faults, connection resistance faults, and contactor contact adhesion faults

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