Electric control method of blade electric vehicle and blade electric vehicle

Abstract

The invention provides an electric control method on a blade electric vehicle and the blade electric vehicle. The method includes the steps of when a power-off request exists, controlling a battery management system to conduct insulation fault detection through a whole-vehicle controller, sending a motor enabling relief instruction to a motor controller, sending a working stop instruction to a DC / DC converter, sending a high-voltage power-off instruction to the battery management system when the non-work state information fed back by the DC / DC converter is received or the non-work state information fed back by the DC / DC converter is not received within first preset time, controlling the motor controller to conduct rapid power-off after the feedback of the motor controller and the battery management system is received to complete high-voltage power-off, and controlling the whole vehicle to conduct low-voltage power-off after high-voltage power-off is completed. The signal interaction between all controllers in the powering process of the blade electric vehicle and the actions which should be executed after instruction signals are received are explicitly stipulated, and therefore thereliability and safety of the power-off process of the blade electric vehicle are improved.

Description

technical field [0001] The invention relates to the field of new energy technologies, in particular to a method for controlling power-off of a pure electric vehicle and the pure electric vehicle. Background technique [0002] The energy crisis and environmental pollution have made traditional vehicles face increasingly serious challenges. New energy vehicles have become the current and future development trend, and pure electric vehicles occupy an important position in new energy vehicles. However, due to the short development time of pure electric vehicles, the technology is not mature enough, the accumulated design experience is insufficient, and the power-off process and power-off conditions of pure electric vehicles are not considered comprehensively, resulting in the failure of power-off and the inability to fully power-off the low-voltage power supply As a result, the low-voltage battery loses electricity, causing great distress to the driver. [0003] The current pow...

AI Technical Summary

Problems solved by technology

However, due to the short development time of pure electric vehicles, the technology is not mature enough, the accumulated design experience is insufficient, and the power-off process and power-off conditions of pure electric vehicles are not considered comprehensively, resulting in the failure of power-off and the inability to fully power-off the low-voltage power supply As a result, the low-voltage battery loses power, causing great distress to the driver.

[0003] The current power-off logic of pure electric vehicles is too simple, there is no perfect definition of the power-off process, and the signal interaction between the controllers involved in the power-off process, the state switching of each controller itself, and the process of power-off are not fully considered. Time required, the time required for the controlled object to respond to the controller command, if the vehicle condition is slightly different from the ideal condition, there will be a problem of power-off failure, and even lead to confusion in the control logic of the vehicle, resulting in unpredictable consequences

That is, the safety and reliability of the current pure electric vehicle power-off process are low, which affects the driver's driving experience and driving safety

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