Switch control protection circuit and protection method of automobile controller system

Abstract

The invention provides a switch control protection circuit and method of an automobile controller system. When one path of the KL30 or KL15 power supply line is abnormal and cannot supply power, the other path of the KL30 or KL15 power supply line supplies power to the abnormal circuit, and normal operation of a controller is guaranteed. The switch control protection circuit comprises a KL30 normal power supply circuit and a switch control power supply KL15 power supply circuit, and a first one-way conduction circuit and a second one-way conduction circuit are arranged in parallel between theKL30 normal power supply circuit and the switch control power supply KL15 power supply circuit. The conduction direction of the first one-way conduction circuit is from a KL30 normal power supply circuit to a switch control power supply KL15 power supply circuit, the conduction direction of the second one-way conduction circuit is from the switch control power supply KL15 power supply circuit to the KL30 normal power supply circuit, and the first one-way conduction circuit and the second one-way conduction circuit are respectively connected with a first control circuit and a second control circuit. And the first control circuit and the second control circuit are respectively connected with the KL30 normal power supply circuit and the switch control power supply KL15 power supply circuit.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a switch control protection circuit and a protection method of an automobile controller system. Background technique [0002] In modern society, automobiles play an important role in life, which not only changes people's living conditions and travel modes, but also promotes the development of society. With the deepening of automobile research, human beings have put forward higher requirements for the safety, comfort, drivability and reliability of automobiles. There are dozens of electronic control units in a car, and each electronic control unit plays a different role and coordinates with each other. Ensuring the reliable operation of these electronic control units plays a decisive role in the safety, reliability, and drivability of the vehicle, and the power supply of these controllers is the foundation of the foundation. [0003] The power supply of the automobile contro...

AI Technical Summary

Problems solved by technology

However, when the plug-in terminal of any one of the plug-in terminals of any one of the channels is loose or displaced, the power supply cannot be maintained, resulting in sudden deceleration of the vehicle or accidents.

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