A motor controller power distribution control circuit mounted on an electric vehicle and its control method

Abstract

The invention discloses a power distribution control circuit and a control method of a motor controller mounted on an electric vehicle. The control circuit includes a power battery, a vehicle logic unit, a bodywork motor controller, a drive motor controller, a power-on buffer circuit, a CAN bus, and a bodywork electric control switch. The vehicle logic unit is connected to the power battery, the bodywork motor controller, and the driving motor controller respectively, and is connected to the first electric control switch and the second electric control switch through low-voltage control lines to ground respectively; the negative pole of the battery is connected to the bodywork motor controller 1. The drive motor controller; the positive pole of the voltage is connected to the drive motor controller after being connected to the parallel circuit formed by the power-on buffer circuit and the second electric control switch, and then connected to the bodywork motor controller. The present invention enables multiple motor controllers to share one power-on buffer circuit through specific control logic, and conducts power distribution control through relays in the middle, so as to ensure the safety of power consumption even when meeting normal demands.

Description

technical field [0001] The invention relates to the technical field of electric vehicle control, in particular to a power distribution control circuit of a motor controller mounted on an electric vehicle and a control method thereof. Background technique [0002] When a pure electric vehicle is used as a special vehicle, it needs to be equipped with a top-mounted motor power system: for example, a sprinkler needs to be equipped with a sprinkler motor, and a sweeping vehicle needs to be equipped with a sweeping motor. When the motor controller is connected to a high-voltage power supply, there is an instantaneous current pulse that will cause damage to the fuse and relay of the power distribution. If each motor controller is equipped with a power-on buffer circuit, the cost will increase significantly. [0003] It will be very meaningful if a high-voltage power distribution method for solving the above-mentioned problems can be provided. Contents of the invention [0004] ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem in the prior art that the bodywork system that does not need to be opened during the driving process always has a DC high-voltage power supply and there is a risk, the present invention provides an electric vehicle bodywork motor controller power distribution control circuit and control method

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