Power-on and power-off control method of pure electric heavy truck

Abstract

The invention relates to a power-on and power-off control method of a pure electric heavy truck. Related peripheral hardware comprises a chassis distribution box, a cab distribution box, a vehicle control unit, a key switch, a main switch, relays, a motor controller, a high-voltage distribution box and a four-in-one controller. In a whole vehicle power-on process, power-on of all the high-voltagecontrollers is managed by the vehicle control unit in a unified mode, time sequence judgment of all the controllers is not needed, and the effect that the vehicle control unit serves as a whole vehicle brain is achieved. In the power-off process of the whole vehicle, a low-voltage power supply is controlled in the mode that the vehicle control unit controls the relays, and normal work before the relays in all the high-voltage controllers are disconnected is guaranteed. A problem that each high-voltage controller has no low-voltage power supply and cannot communicate after the key door is closed is avoided; and when an ON gear of the key door is suddenly powered off, the situation that each high-voltage controller is accidentally powered off is avoided, and a development period of the controller is shortened.

Description

technical field [0001] The invention belongs to the field of power on and off control, and in particular relates to a power on and off control method for pure electric heavy trucks. Background technique [0002] At present, there are many high-voltage controllers for pure electric vehicles, and each high-voltage controller is different from traditional low-voltage controllers, and there is a logical mutual judgment in power-on and power-off control. Complicated, there is a risk of power-on and power-off delays. In order to uniformly meet the power-on and power-on judgment and timing requirements of each high-voltage controller, a method of powering on and off the high-voltage controller is provided by a VCU hard-wired drive relay. [0003] There are complex logical judgments for power on and off between high-voltage controllers. In order to ensure the normal operation of each high-voltage controller, each high-voltage controller needs to implement a delayed power-off functi...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a power-on and power-on control method for pure electric heavy trucks. The technical problem to be solved is: the problem that the signal cannot be received normally due to the power-off of the controller

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