Voltage reference initialization system and method for electric car controller

Abstract

The present invention relates to a reference current initialization system of an electric motor car controller and an initialization method thereof. The reference current 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 current output end of the reference power supply is connected with the reference current input port of the electric motor car controller; controlled by the upper controlling machine, the electric motor car controller acquires the current of the output end of a current feedback circuit, derives a reference current value from the current by A / D conversion and stores the reference current value into an E<2>RROM in the electric motor car controller, thus realizing the initialization of the reference current 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 current 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 current limiting value used by the electric vehicle controller for current limiting protection must be modified. At present, there are two main methods for the electric vehi...

AI Technical Summary

Problems solved by technology

To sum up, the existing electric vehicle controllers have the following problems when modifying the current limit value: 1. Regardless of the software method or hardware method, there are problems such as long time spent in the modification process and low production efficiency; 2. Using It is difficult to improve the accuracy of the current limit 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 current limiting value, resulting in an increase in production costs

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