Charging and discharging management system of electric automobile

Abstract

The invention discloses a charging and discharging management system for electric vehicles, which comprises a plurality of electric vehicles, and each electric vehicle comprises a motor, a charging and discharging module and a controller; the charging and discharging module comprises a first capacitor, an EMC filter circuit, a voltage discharge circuit and an insulation detection circuit. The control end of the motor and the control end of the charging and discharging module are connected with the controller, and the controller is configured to control corresponding MOS tubes in a three-phase circuit of the motor to work in a PWM mode and/or a turn-off mode according to the charging and discharging requirements of the electric vehicle. Each electric vehicle is configured so as to be able to perform power interaction with another electric vehicle via the charging/discharging module. According to the charging and discharging management system of the electric vehicle provided by the embodiment of the invention, the charging and discharging module is additionally arranged, and the motor control strategy of the electric vehicle is improved, so that when the electric vehicle lacks electricity, other electric vehicles can be used as discharging vehicles to carry out electric power interaction with the vehicle lacking electricity through the charging and discharging module; therefore, the problem of power shortage emergency rescue of the electric automobile is solved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a charging and discharging management system for electric vehicles. Background technique [0002] With the continuous development of new energy technologies, electric vehicles are gradually recognized by the market and favored by consumers due to their advantages such as quick start, zero emission, low noise, and low energy consumption. [0003] However, due to the small number and uneven distribution of charging facilities (charging piles and charging stations) for electric vehicles, when an electric vehicle loses power, it is difficult for the vehicle to power up and move, and it is impossible to drive to a nearby charging facility for recharging. As a result, the normal driving of electric vehicles is affected and the passenger experience is reduced. Therefore, how to improve the power loss rescue of electric vehicles has become an urgent technical problem to...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a charging and discharging management system for electric vehicles to solve the technical problem that the existing electric vehicles are difficult to achieve effective power replenishment. By adding a charging and discharging module and improving the motor control strategy of the electric vehicle, the electric When the power is on, other electric vehicles can be used as discharge vehicles to interact with the power-deficient vehicles through the charge-discharge module, thereby improving the emergency rescue problem of electric vehicles.

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