Power-on and power-off method of function integrated motor controller

Abstract

The invention discloses a power-on and power-off method for a function-integrated motor controller. The method comprises the steps of S1 enabling a power supply conversion chip to jump from a first state to a second state when receiving a wake-up signal outputted by a wake-up circuit and judging that the wake-up signal is valid, and enabling the power supply conversion chip to output a voltage, so as to enable the power-on initialization of a single-chip microcomputer, and enable the power supply conversion chip to jump from the second state to a third state. The power-on and power-off method for the function-integrated motor controller has the advantages of being simple in hardware topology, flexible in function, low in cost and the like, a hardware basis is provided for a flexible power-on and power-off control scheme of the multifunctional motor controller, a power-on and power-off circuit is simplified on the basis that existing functions are not affected, the potential failure hidden danger caused by hardware reset is avoided, and various wake-up signals can be flexibly integrated.

Description

technical field [0001] The invention belongs to the technical field of powering on and off a motor controller, and in particular relates to a method for powering on and off a function-integrated motor controller. Background technique [0002] The vehicle motor controller is an important power system component in new energy vehicles. It provides three-phase high-voltage power to the motor to obtain the target speed and torque, and its low-voltage control power source comes from the on-board 12V battery. The 12V battery is the low-voltage power supply for all electrical appliances in the vehicle. Generally, the cost of the battery is relatively high. In order to control the parameters such as capacity and volume when selecting the vehicle-mounted 12V battery, the vehicle has requirements for the static current of all parts to achieve control of the battery. cost target. [0003] In order to reduce the quiescent current, avoid the unexpected discharge of the battery, and reduc...

AI Technical Summary

Problems solved by technology

[0008] 1) The hardware circuit design is relatively complicated; in order to reduce the quiescent current, an additional hardware power switch circuit needs to be designed to control the battery power on and off, which further increases the design cost;

[0009] 2) The MCU needs to issue instructions to control the hardware power-off circuit action to achieve power-off. This semi-autonomous power-off method affects user experience;

After the first reset, the hard-wire shutdown circuit triggers power shutdown, making it difficult for the motor controller to complete the second reset operation; it needs to be patched by putting the relevant operations in the power-on process, etc., causing power-on The time is too long and other problems, and the unavoidable multiple reset actions will bring additional potential failure risks to the hardware

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