Safety protection method and system for vehicle with replaceable power battery

Abstract

The invention discloses a safety protection method for a vehicle with a replaceable power battery. The safety protection method comprises the steps that the connection state of the power battery and the vehicle is collected; whether the power battery is connected with the vehicle or not is judged; if not, the start-stop state of the vehicle is acquired; when the vehicle is in a non-power-on parking state, the vehicle is prevented from being powered on by high voltage; and when the vehicle is in a power-on running state, the driving power of a motor is reduced to zero. The invention further discloses a safety protection system for the vehicle with the replaceable power battery. The safety protection system comprises a detection device, a vehicle control unit, a battery management system anda motor controller, and the vehicle control unit is used for controlling the battery management system and the motor controller to work according to the connection state information detected by the detection device and the start-stop state of the vehicle. By collecting the connection state of the power battery and the vehicle, and correspondingly controlling the vehicle according to the running state of the vehicle, it can be guaranteed that the vehicle is driven under the condition of reliable connection of the power battery, and therefore the safety of the vehicle can be improved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a safety protection method and system for a vehicle with a power battery replaceable. Background technique [0002] With the emphasis on environmental protection, the application of pure electric vehicles has become more and more extensive, but an important disadvantage of pure electric vehicles is that the cruising range is short and the charging time is long. [0003] In order to solve the above problems, a solution that can quickly replace the battery system is usually adopted at present, which can well solve the problem of short charging time. By establishing a dedicated power exchange station, the backup battery is fully charged in the station, and the vehicle that needs to be recharged when the battery power is low can directly replace the battery at the station, which greatly shortens the charging time and improves the use efficiency of the vehicle. [0004] However, aft...

AI Technical Summary

Problems solved by technology

[0002] With the emphasis on environmental protection, the application of pure electric vehicles is becoming more and more widespread, but an important disadvantage of pure electric vehicles is short cruising range and long charging time

[0003] In order to solve the above problems, the solution of quick replacement battery system is usually adopted at present, which can well solve the problem of short charging time

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