An integrated controller for electric vehicles based on functional safety

Abstract

The invention relates to the technical field of integration control, and aims at providing an electric vehicle integrated controller which can quickly enter the safety state and is based on functionalsafety. According to the technical scheme, the electric vehicle integrated controller based on the functional safety comprises a main driving motor controller, a high-voltage power distribution unitand a DCDC low-voltage power supply controller; the main driving motor controller is provided with a fault signal input interface, and is electrically connected with an insulation detector and a steering assisting power-assisted controller separately; the main driving motor controller, the DCDC low-voltage power supply controller, the insulation detector and the steering assisting power-assisted controller are all provided with main control chips. By means of the electric vehicle integrated controller, when an electric vehicle breaks down, the electric vehicle integrated controller can quicklyenter the safety state, and the driving safety is improved.

Description

technical field [0001] The invention relates to the technical field of integrated control, in particular to an integrated controller for electric vehicles based on functional safety. Background technique [0002] Electric vehicles often use an all-in-one integrated controller to improve system integration and reduce vehicle external wiring. At present, most of the integrated controllers simply integrate the various components physically together in terms of integration methods. Each unit in the integrated controller is connected to the external vehicle controller through the CAN bus, and each unit inside the integrated controller There is not much intersection between them, which will cause the execution time of the integrated controller to be greater than the fault tolerance time set by the system when executing some serious fault protection, that is, the system cannot protect some serious faults in time. For example: when the auxiliary steering controller or the insulatio...

AI Technical Summary

Problems solved by technology

The reaction time of the fault protection in this way is too long, and the controller of the main drive motor cannot be shut down in time, and there is a risk of driving safety.

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