Voltage reference initialization system and method for electric car controller

Abstract

The present invention relates to a reference voltage initialization system of an electric motor car controller and an initialization method thereof. The reference voltage initialization system is composed of an upper controlling machine, a reference power supply and the electric motor car controller; wherein, the upper controlling machine is connected with the electric motor car controller by the way of serial communication and connected with the reference power supply through a control line; the reference voltage output end of the reference power supply is connected with the reference voltage input port of the electric motor car controller; controlled by the upper controlling machine, the electric motor car controller acquires a reference voltage provided by the reference power supply, derives a reference voltage value from the reference voltage by A / D conversion and stores the reference voltage value into an E<2>RROM in the electric motor car controller, thus realizing the initialization of the reference voltage of the electric motor car controller. The reference voltage initialization system, which is characterized by reasonable design, high automation degree and simple and convenient implementation, effectively increases production efficiency and improves the performance of the electric motor car controller, bringing great convenience to the design, production and maintenance of the electric motor car controller.

Description

technical field [0001] The invention belongs to the field of electric vehicle controllers, in particular to an electric vehicle controller reference voltage preset system and a preset method thereof. Background technique [0002] Electric vehicles are favored by consumers because of their lightness, speed, environmental protection, energy saving, and low price. The electric vehicle controller is one of the core components of the electric vehicle, and the electric vehicle usually completes the driving, turning, braking and other tasks of the electric vehicle under the control of the electric vehicle controller. In the production process of the electric vehicle controller, the performance parameters of the electric vehicle controller are different due to the inconsistency of the component parameters. The undervoltage value used by the electric vehicle controller for undervoltage protection must be modified. At present, there are two main methods for the electric vehicle cont...

AI Technical Summary

Problems solved by technology

To sum up, the existing electric vehicle controllers have the following problems when modifying the undervoltage value: 1. No matter whether the software method or the hardware method is used, the modification process takes a long time and the production efficiency is low; 2. The use of It is difficult to improve the accuracy of the undervoltage value of the electric vehicle controller by manual adjustment, which affects the performance of the electric vehicle controller; 3. There are many different software versions or hardware versions for electric vehicle controllers with different component parameters, which increases The workload of development, production and maintenance; 4. When modifying, it is necessary to use precision resistors to adjust the undervoltage value, resulting in an increase in production costs

Images